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FCB 32 00078 FCB 12 00079 FCB 16 00080 FCB 12 00081 FCB 32 00082 FCB 24 00083 FCB 32 00084 FCB 24 00085 XAA1A CMPA #$3A REPLACEMENT ROUTINE FOR AA1A ON 00086 * PAGE A38 OF COLOR BASIC 00087 * UNRAVELLED 00088 * (IS CHAR >= (ASCII 9) + 1)? 00089 BHS XAA28 GO IF YES 00090 CMPA #$20 SPACE? 00091 BNE XAA24 GO IF NO 00092 JMP GETNCH JUMP BACK INTO LOW RAM 00093 XAA24 SUBA #$30 SET CARRY IF 00094 SUBA #$D0 CHARACTER > (ASCII 0) 00095 XAA28 RTS 00096 END 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************************* 00020 * 00030 * XSC.ASM 00040 * MDJ 09-21-90 00050 * 00060 * SETS UP THE SAM AND VDG 00070 * FOR THE PROPER GRAPHICS 00080 * MODE 00090 * 00100 ************************* 00101 * 00102 * U AND S STACKS MUST 00103 * ALREADY BE INITIALIZED 00104 * 00105 ************************* 00110 * 00120 * REF. PAGES B58 AND B57 00130 * EXTENDED COLOR BASIC 00140 * UNRAVELLED 00150 * 00160 ************************* 00170 * 00180 CSSVAL EQU $C1 SCREEN'S COLOR SET ARGUMENT 00190 PIA1 EQU $FF20 PERIPHERAL INTERFACE ADAPTER ONE 00200 ORG $3B12 00210 XSC TSTB SET FLAGS 00220 BEQ XSC1 BRANCH IF COLOR SET ZERO 00230 LDB #8 VALUE FOR COLOR SET ONE 00240 XSC1 STB CSSVAL SAVE IN VDG CSS RAM IMAGE 00250 XSC2 LDA PIA1+2 GET PORT B OF PIA1 00260 ANDA #$F7 MASK OFF VDG CSS CONTROL BIT 00270 ORA CSSVAL OR IN THE COLOR SET ARGUMENT 00280 STA PIA1+2 STORE IT TO PIA1 00290 ZEND RTS 00300 END ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ38 JSR XJUMP1 00139 PULS U GET START COORDINATES 00140 STU HORBEG RESTORE THEM 00141 BSR XLPM POINT TO ROUTINE TO MOVE PIXEL 00142 * POINTERS TO THE RIGHT 00143 XLH2 STA VD7 SAVE PIXEL MASK 00144 JSR XPSETA GO SET POINT 00145 LDA VD7 GET OLD PIXEL MASK 00146 JSR ,U MOVE TO NEXT ONE TO RIGHT 00147 LEAY -1,Y DECREMENT COUNTER 00148 BNE XLH2 LOOP IF NOT DONE 00149 XLH3 RTS 00150 XLPM LDU #XLPMA POINT TO JUMP TABLE 00151 LDB PMODE GET MODE ARGUMENT 00152 ASLB MULTIPLY BY TWO 00153 LDU B,U GET JUMP ADDRESS 00154 RTS 00155 XLPMA FDB XLPMB JUMP TABLE 00156 FDB XLPMC 00157 FDB XLPMB 00158 FDB XLPMC 00159 FDB XLPMB 00160 XLPMB LSRA SHIFT ONE BIT TO RIGHT 00161 BCC XLPMB1 GO IF IN SAME BYTE 00162 RORA SET BIT 7 IF IN NEXT BYTE 00163 LEAX 1,X ADD ONE TO X 00164 XLPMB1 RTS 00165 XLPMC LSRA SHIFT MASK ONE BIT TO RIGHT 00166 BCC XLPMB SHIFT RIGHT AGAIN IF SAME BYTE 00167 LDA #$C0 SET PIXEL #3 IF NEW BYTE 00168 LEAX 1,X ADD ONE TO ABS SCREEN LOCATION 00169 RTS 00170 XLPMD LDB HORBYT GET # OF BYTES/HORIZONTAL ROW 00171 ABX ADD TO ABSOLUTE SCREEN POSITION 00172 ZEND RTS 00173 END ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ00001 ************************* 00002 * 00003 * XPMODE.ASM 00004 * MDJ 09-24-90 00005 * 00006 * SETS THE GRAPHICS MODE 00007 * 00008 ************************* 00009 * 00010 * U AND S STACKS MUST 00011 * ALREADY BE INITIALIZED 00012 * 00013 * XPMODE MUST BE ENTERED 00014 * WITH THE MODE (0-4) IN 00015 * REGISTER B 00016 * 00017 * XPAGE MUST BE ENTERED 00018 * WITH THE GRAPHICS PAGE 00019 * (1-8) IN REGISTER B 00020 * 00021 ************************* 00022 * 00023 * REF. PAGE B57 EXTENDED 00024 * COLOR BASIC UNRAVELLED 00025 * 00026 ************************* 00027 * 00028 GRPRAM EQU $BC START OF GRAPHICS RAM 00029 BEGGRP EQU $BA START OF CURRENT GRAPHICS PAGE 00030 ENDGRP EQU $B7 END OF CURRENT GRAPHICS PAGE 00031 HORBYT EQU $B9 # OF BYTES PER HORIZONTAL LINE 00032 PMODE EQU $B6 MODE ARGUMENT 00033 BAKCOL EQU $B3 BACKGROUND COLOR 00034 FORCOL EQU $B2 FOREGROUND COLOR 00035 GETCCH EQU $A5 OP CODE OF LDA EXTENDED 00036 GETNCH EQU $9F INCREMENT ROUTINE ADDRESS 00037 ORG $3B7E 00038 XPMODE PSHS A,B 00039 LDD #XAA1A CHANGE JUMP ADDRESS IN LOW RAM 00040 STD $A9 00041 PULS A,B 00042 PSHS X 00043 LDA GRPRAM GET THE START OF GRAPHICS RAM 00044 STA BEGGRP SET THE STARTING GRAPHICS PAGE 00045 ASLB MULTIPLY MODE BY 2 00046 LDX #XPMOD3+1 POINT TO LOOKUP TABLE 00047 ADDA B,X ADD GRAPHICS PAGE MEMORY AMOUNT 00048 STA ENDGRP STORE TH END OF THE GRAPHICS PAGE 00049 LEAX -1,X POINT X TO PREVIOUS BYTE IN TABLE 00050 LDA B,X GET # OF BYTES/HORIZONTAL LINE 00051 STA HORBYT SAVE IT 00052 LSRB RESTORE PMODE VALUE 00053 STB PMODE SAVE IT 00054 CLRA 00055 STA BAKCOL SET BACKGROUND COLOR TO ZERO 00056 LDA #3 00057 STA FORCOL SET FOREGROUND COLOR TO 3 00058 JSR GETCCH IS THERE A STARTING PAGE NUMBER? 00059 BEQ XPMOD2 GO IF NO 00060 BRA XPAGE2 00061 XPAGE PSHS X 00062 XPAGE2 TSTB SET FLAGS 00063 DECB BUMP ONE 00064 LDA #6 EACH PAGE = 6 X 256 = 1.5K 00065 MUL MULTIPLY BY PAGE NUMBER 00066 ADDB GRPRAM ADD START OF GRAPHICS RAM 00067 PSHS B TEMPORARY SAVE 00068 ADDB ENDGRP ADD CURRENT END ADDRESS 00069 SUBB BEGGRP SUBTRACT CURRENT START ADDRESS 00070 STB ENDGRP SAVE AS END OF GRAPHICS PAGE 00071 PULS B GET TEMPORARY START ADDRESS 00072 STB BEGGRP SAVE IT AS START OF GRAPHICS PAGE 00073 XPMOD2 PULS X 00074 RTS 00075 XPMOD3 FCB 16 LOOKUP TABLE 00076 FCB 6 00000001 ************************* 00002 * 00003 * XLINE.ASM 00004 * MDJ 09-24-90 00005 * 00006 * DRAWS A GRAPHICS LINE 00007 * 00008 ************************* 00009 * 00010 * REQUIRES: XJUMP1 00011 * XPSET 00012 * 00013 * MUST ENTER WITH START 00014 * POINT IN 00015 * (HORBEG,VERBEG) 00016 * AND END POINT IN 00017 * (HOREND,VEREND) 00018 * 00019 ************************* 00020 * 00021 * REF. PAGE B52 AND 00022 * SURROUNDING PAGES 00023 * EXTENDED COLOR BASIC 00024 * UNRAVELLED 00025 * 00026 ************************* 00027 * 00028 XJUMP1 EQU $3A2E GRAPHICS SUBROUTINES SET ONE 00029 XJMP1A EQU $3A38 ALTERNATE ENTRY POINT 00030 XPSETA EQU $3C32 SET POINT ALTERNATE ENTRY 00031 VERBEG EQU $BF STARTING VERTICAL COORDINATE 00032 HORBEG EQU $BD STARTING HORIZONTAL COORDINATE 00033 VEREND EQU $C5 ENDING VERTICAL COORDINATE 00034 HOREND EQU $C3 ENDING HORIZONTAL COORDINATE 00035 HORBYT EQU $B9 # OF BYTES PER HORIZONTAL LINE 00036 PMODE EQU $B6 MODE ARGUMENT 00037 VD7 EQU $D7 SCRATCHPAD VARIABLE 00038 ORG $3C50 00039 XLINE LDY #XLIV POINT Y TO VERTICAL BUMP ROUTINE 00040 JSR XLABSV CALCULATE VERTICAL DIFFERENCE 00041 LBEQ XLH IF = 0, DRAW HORIZONTAL LINE 00042 BCC XLINE1 GO IF VEREND > VERBEG 00043 LDY #XLDV POINT Y TO NEG. VERTICAL BUMP 00044 XLINE1 PSHS A,B SAVE VERTICAL DIFFERENCE 00045 LDU #XLIH POINT U TO HORIZONTAL BUMP 00046 JSR XLABSH CALCULATE HORIZONTAL DIFFERENCE 00047 LBEQ XLV IF = 0, DRAW A VERTICAL LINE 00048 BCC XLINE2 GO IF HOREND > HORBEG 00049 LDU #XLDH POINT U TO NEG. HORIZONTAL BUMP 00050 XLINE2 CMPD ,S COMPARE HORIZ. & VERT. DIFFERENCE 00051 PULS X PUT VERTICAL DIFFERENCE IN X 00052 BCC XLINE3 GO IF HORIZ.DIFF > VERT.DIFF 00053 EXG U,Y SWAP CHANGE ADDRESSES 00054 EXG D,X EXCHANGE HORIZ.DIFF AND VERT.DIFF 00055 XLINE3 PSHS A,B,U SAVE LARGER OF H.DIFF OR V.DIFF 00056 * AND THE INCR/DECR ADDRESS 00057 PSHS A,B SAVE LARGER OF H.DIFF OR V.DIFF 00058 LSRA DIVIDE BY 2 00059 RORB 00060 BCS XLINE4 GO IF ODD NUMBER 00061 CMPU #XLIV+1 INCR OR DECR? 00062 BCS XLINE4 GO IF INCR 00063 SUBD #1 SUBTRACT 1 IF DECR 00064 XLINE4 PSHS A,B,X SAVE DELTA AND COUNTER 00065 LDU #XJMP1A 00066 LDA PMODE GET MODE ARGUMENT 00067 ASLA MULTIPLY BY 2 00068 LDU A,U OFFSET 00069 XLINE5 JSR ,U CONVERT COORDS TO SCREEN ADDRESS 00070 JSR XPSETA GO SET POINT 00071 LDX 6,S GET DISTANCE COUNTER 00072 BEQ XLINE6 GO IF LINE DRAW IS COMPLETE 00073 LEAX -1,X DECREMENT BY ONE 00074 STX 6,S SAVE COUNTER 00075 JSR [8,S] GO TO (INCR OR DECR) BASED ON 00076 * WHICH HAS LARGEST DELTA 00077 LDD ,S GET MINOR COORDINATE COUNTER 00078 ADDD 2,S ADD THE SMALLEST DIFFERENCE 00079 STD ,S SAVE NEW MINOR COORDINATE COUNTER 00080 SUBD 4,S SUBTRACT LARGEST DIFFERENCE 00081 BCS XLINE5 GO IF RESULT NOT > LARGEST DIFF. 00082 STD ,S STORE NEW MINOR COORDINATE DIFF. 00083 JSR ,Y INCR/DECR COORD. WITH LEAST DELTA 00084 BRA XLINE5 KEEP GOING 00085 XLINE6 PULS X 00086 PULS A,B,X,Y,U 00087 RTS 00088 XLIH LDX HORBEG GET COORDINATE 00089 LEAX 1,X ADD ONE 00090 STX HORBEG SAVE COORDINATE 00091 RTS 00092 XLIV LDX VERBEG GET COORDINATE 00093 LEAX 1,X ADD ONE 00094 STX VERBEG SAVE COORDINATE 00095 RTS 00096 XLDH LDX HORBEG GET COORDINATE 00097 LEAX -1,X SUBTRACT ONE 00098 STX HORBEG SAVE COORDINATE 00099 RTS 00100 XLDV LDX VERBEG GET COORDINATE 00101 LEAX -1,X SUBTRACT ONE 00102 STX VERBEG SAVE COORDINATE 00103 RTS 00104 XLABSH LDD HOREND GET HORIZONTAL END COORDINATE 00105 SUBD HORBEG SUBTRACT HORIZONTAL START COORD. 00106 BRA XLABSX GET ABSOLUTE VALUE 00107 XLABSV LDD VEREND GET VERTICAL END COORDINATE 00108 SUBD VERBEG SUBTRACT VERTICAL START COORD. 00109 XLABSX BCC XLABSY GO IF END >= START 00110 PSHS CC SAVE STATUS 00111 NEGA NEGATE ACCD 00112 NEGB 00113 SBCA #0 00114 PULS CC RESTORE STATUS 00115 XLABSY RTS 00116 XLV PULS A,B CLEAN STACK 00117 LDD VERBEG GET COORDINATES 00118 PSHS A,B SAVE THEM 00119 JSR XLABSV CALCULATE ABSOLUTE VALUE 00120 BCC XLV1 GO IF END COORD. > START COORD. 00121 LDX VEREND 00122 STX VERBEG SWITCH COORDINATES 00123 XLV1 TFR D,Y LENGTH OF LINE TO Y 00124 LEAY 1,Y SET BOTH START AND END COORDS. 00125 JSR XJUMP1 00126 PULS U GET END COORDINATE 00127 STU VERBEG RESTORE THEM 00128 LDU #XLPMD POINT TO "DOWN 1 ROW" ROUTINE 00129 BRA XLH2 DRAW VERTICAL LINE 00130 XLH LDX HORBEG GET COORDINATES 00131 PSHS X SAVE THEM 00132 JSR XLABSH GET ABSOLUTE VALUE 00133 BCC XLH1 GO IF END > START 00134 LDX HOREND TRANSFER END COORDINATE TO START 00135 STX HORBEG 00136 XLH1 TFR D,Y SAVE DIFFERENCE IN Y 00137 LEAY 1,Y ADD ONE TO DIFFERENCE 00100001 ************************* 00002 * 00003 * XJUMP1.ASM 00004 * MDJ 09-21-90 00005 * 00006 * GRAPHICS SUBROUTINES 00007 * SET ONE 00008 * 00009 ************************* 00010 * 00011 * U AND S STACKS MUST 00012 * ALREADY BE INITIALIZED 00013 * 00014 ************************* 00015 * 00016 * REF. "GRAPHICS PACKAGE" 00017 * PAGES 46 & 47 00018 * EXTENDED COLOR BASIC 00019 * UNRAVELLED 00020 * 00021 ************************* 00022 * 00023 PMODE EQU $B6 GRAPHICS MODE 00024 HORBYT EQU $B9 # OF BYTES PER HORIZONTAL LINE 00025 VERBEG EQU $BF VERTICAL COORDINATES START POINT 00026 BEGGRP EQU $BA START OF CURRENT GRAPHICS PAGE 00027 HORBEG EQU $BD HORIZONTAL COORDINATES START PT. 00028 ORG $3A2E 00029 XJUMP1 LDU #XJMP1A JUMP TABLE ADDRESS 00030 LDA PMODE GET GRAPHICS MODE 00031 ASLA OFFSET INTO JUMP TABLE 00032 LDU A,U GET JUMP ADDRESS 00033 JMP ,U GO THERE 00036 XJMP1A FDB XJMP1B JUMP TABLE 00037 FDB XJMP1C 00038 FDB XJMP1B 00039 FDB XJMP1C 00040 FDB XJMP1B 00041 XJMP1B PSHS B,U PMODE 0,2,4 COORD. CONVERSION 00042 LDB HORBYT GET # OF BYTES PER ROW 00043 LDA VERBEG+1 GET VERTICAL COORDINATE 00044 MUL CALCULATE VERTICAL BYTE OFFSET 00045 ADDD BEGGRP ADD START OF GRAPHICS PAGE 00046 TFR D,X TEMPORARY SAVE 00047 LDB HORBEG+1 GET HORIZONTAL COORDINATE 00048 LSRB DIVIDE BY 8 00049 LSRB 00050 LSRB 00051 ABX ADD HORIXONTAL BYTE OFFSET 00052 LDA HORBEG+1 GET HORIZONTAL COORDINATE 00053 ANDA #7 MASK OUT PIXEL NUMBER 00054 LDU #XJMP1D POINT TO MASK TABLE 00055 LDA A,U GET PIXEL MASK 00056 PULS B,U 00057 RTS 00058 XJMP1C PSHS B,U PMODE 1,3 COORDINATE CONVERSION 00059 LDB HORBYT GET # OF BYTES PER ROW 00060 LDA VERBEG+1 GET VERTICAL COORDINATE 00061 MUL CALCULATE VERTICAL OFFSET 00062 ADDD BEGGRP ADD START OF GRAPHICS PAGE 00063 TFR D,X TEMPORARY SAVE 00064 LDB HORBEG+1 GET HORIZONTAL COORDINATE 00065 LSRB DIVIDE BY 4 00066 LSRB 00067 ABX ADD HORIZONTAL BYTE OFFSET 00068 LDA HORBEG+1 GET HORIZONTAL COORDINATE 00069 ANDA #3 MASK OUT PIXEL NUMBER 00070 LDU #XJMP1E POINT TO MASK TABLE 00071 LDA A,U GET PIXEL MASK 00072 PULS B,U 00073 RTS 00074 XJMP1D FCB $80 PIXEL MASK TABLE FOR PMODE 0,2,4 00075 FCB $40 00076 FCB $20 00077 FCB $10 00078 FCB 8 00079 FCB 4 00080 FCB 2 00081 FCB 1 00082 XJMP1E FCB $C0 PIXEL MASK TABLE FOR PMODE 1,3 00083 FCB $30 00084 FCB $C 00085 ZEND FCB 3 00086 END ZEND FCB 3 00086 END ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ87 LDB #8 SEND 8 BITS 00088 LA2C8 PSHS B SAVE BIT COUNTER 00089 CLRB CLEAR DA IMAGE 00090 LSRA ROTATE NEXT BIT TO CARRY 00091 ROLB ROTATE CARRY INTO BIT ONE 00092 ASLB SET ALL OTHER BITS TO ZERO 00093 BSR LA2FD TRANSMIT DATA BYTE 00094 PULS B GET BIT COUNTER 00095 DECB SENT ALL 8 BITS? 00096 BNE LA2C8 GO IF NO 00097 BSR LA2FB SEND STOP BIT (ACCB=0) 00098 PULS A,CC RESTORE OUTPUT CHARACTER AND 00099 * INTERRUPTS STATUS 00100 CMPA #CR IS IT CARRIAGE RETURN? 00101 BEQ LA2ED GO IF YES 00102 INC LPTPOS INCREMENT PRINTER POSITION 00103 LDB LPTPOS END OF LINE PRINTER LINE? 00104 CMPB LPTWID 00105 BLO LA2F3 GO IF NO 00106 LA2ED CLR LPTPOS RESET PRINTER POSITION 00107 BSR LA305 00108 BSR LA305 DELAY FOR CARRIAGE RETURN 00109 LA2F3 LDB PIA1+2 WAIT FOR HANDSHAKE 00110 LSRB CHECK RS-232 STATUS 00111 BCS LA2F3 LOOP UNTIL READY 00112 PULS B,X 00113 PULS A 00114 RTS 00115 LA2FB LDB #2 SET RS-232 OUTPUT HIGH (MARKING) 00116 LA2FD STB DA STORE TO THE D/A CONVERTER 00117 BSR LA302 GO WAIT AWHILE 00118 LA302 LDX LPTBTD GET BAUD RATE 00119 FCB SKP2 SKIP NEXT TWO BYTES 00120 LA305 LDX LPTLND PRINTER CARRIAGE RETURN DELAY 00121 LA7D3 LEAX -1,X 00122 BNE LA7D3 00123 RTS 00124 * 00125 ************************* 00126 * 00127 * TYPER OUTPUTS A MESSAGE 00128 * TO THE SCREEN AFTER 00129 * CLEARING CHARACTER 00130 * POSITIONS 00131 * 00132 * TYPEF OUTPUTS A MESSAGE 00133 * TO THE SCREEN WITHOUT 00134 * CLEARING CHARACTER 00135 * POSITIONS 00136 * 00137 * TYPEP OUTPUTS A MESSAGE 00138 * TO THE PRINTER 00139 * 00140 * ON ENTRY: 00141 * THE MESSAGE LENGTH 00142 * (16-BIT) MUST BE IN 00143 * REGISTER X 00144 * THE MESSAGE START 00145 * LOCATION MUST BE IN 00146 * REGISTER Y 00147 * 00148 * NOTHING RETURNED 00149 * 00150 * THE MESSAGE BYTES MAY 00151 * BE ANY 8-BIT NUMBER 00152 * (0-255) - LESS THAN 33 00153 * AND GREATER THAN 126 00154 * PRINT AS AN ASCII SPACE 00155 * 00156 ************************* 00157 * 00158 TYPER PSHS B 00159 TYPER1 LDB ,Y+ LOAD CHARACTER 00160 CMPB #33 LOWEST PRINTABLE CHARACTER 00161 BLO TYPER2 GO IF LOWER 00162 CMPB #126 HIGHEST PRINTABLE CHARACTER 00163 BHI TYPER2 GO IF HIGHER 00164 PSHU B 00165 JSR CLRCHR INLINE PUTCHR FOR SPEED 00166 JSR DCHAR 00167 JSR CURSCT 00168 BRA TYPER3 00169 TYPER2 JSR CLRCHR OUTPUT A SPACE 00170 JSR CURSCT 00171 TYPER3 LEAX -1,X DECREMENT COUNT 00172 BNE TYPER1 RETURN FOR NEXT CHARACTER 00173 PULS B 00174 RTS 00175 TYPEF PSHS B 00176 TYPEF1 LDB ,Y+ LOAD CHARACTER 00177 CMPB #33 LOWEST PRINTABLE CHARACTER 00178 BLO TYPEF2 GO IF LOWER 00179 CMPB #126 HIGHEST PRINTABLE CHARACTER 00180 BHI TYPEF2 GO IF HIGHER 00181 PSHU B 00182 JSR DCHAR INLINE PUTCHF FOR SPEED 00183 TYPEF2 JSR CURSCT 00184 LEAX -1,X DECREMENT COUNT 00185 BNE TYPEF1 RETURN FOR NEXT CHARACTER 00186 PULS B 00187 RTS 00188 TYPEP PSHS B 00189 TYPEP1 LDB ,Y+ LOAD CHARACTER 00190 CMPB #33 LOWEST PRINTABLE CHARACTER 00191 BHS TYPEP2 GO IF HIGHER OR SAME 00192 CMPB #126 HIGHEST PRINTABLE CHARACTER 00193 BLS TYPEP2 GO IF LOWER OR SAME 00194 LDB #32 LOAD SPACE CHARACTER 00195 TYPEP2 PSHU B 00196 JSR PRTCHR GO PRINT CHARACTER ON LINEPRINTER 00197 LEAX -1,X DECREMENT COUNT 00198 BNE TYPEP1 RETURN FOR NEXT CHARACTER 00199 PULS B 00200 RTS 00201 * 00202 ************************* 00203 * 00204 * CRLFS DOES A CRLF ON 00205 * THE SCREEN AND THEN 00206 * SCROLLS THE SCREEN IF 00207 * REQUIRED 00208 * 00209 * NO ENTRY CONDITIONS 00210 * 00211 * NOTHING RETURNED 00212 * 00213 ************************* 00214 * 00215 CRLFS PSHS A 00216 JSR CRLF GO DO CARRIAGE RETURN/LINE FEED 00217 LDA ADVCOD GET ADVANCE CODE 00218 CMPA #0 IS IT CLEAR? 00219 BEQ CRLFS1 GO IF YES 00220 JSR SCROLL GO SCROLL THE SCREEN 00221 CLR ADVCOD DOUBLE CLEAR 00222 CRLFS1 PULS A 00223 ZEND RTS 00224 END ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ00001 ************************* 00002 * 00003 * NTOACV.ASM 00004 * MDJ 09-26-90 00005 * 00006 * CONVERTS A 32-BIT 00007 * NUMBER TO ITS STRING 00008 * EQUIVALENT 00009 * 00010 ************************* 00011 * 00012 * REQUIRES: D3216 00013 * DS3216 00014 * 00015 * NUMBER BASE MUST 00016 * ALREADY BE SET AT BASE 00017 * ($03DD) 00018 * 00019 * ON ENTRY: 00020 * NUMBER MUST BE 00021 * EXPRESSED IN 32-BIT 00022 * FORM, AND MUST BE IN 00023 * DIVDND 00024 * 00025 * ON RETURN: 00026 * THE NUMBER'S STRING 00027 * EQUIVALENT (WITH A 00028 * TRAILING SPACE) WILL 00029 * BE ON TOP OF THE 00030 * U-STACK 00031 * 00032 ************************* 00033 * 00034 BASEL2 EQU $FD NUMBER BASE 00035 D3216 EQU $437E UNSIGNED 32 BY 16 DIVIDE ROUTINE 00036 DIVDND EQU $CB 32-BIT DIVIDEND (SCRATCHPAD) 00037 DIVSOR EQU $CF 16-BIT DIVISOR (SCRATCHPAD) 00038 DS32X EQU $443C 32-BIT NEGATE ROUTINE 00039 HV EQU $D9 HOLDING VARIABLE (SCRATCHPAD) 00040 ORG $459E 00041 NTOACV PSHS A,B,X 00042 LDA #32 PUSH A SPACE TO THE STACK 00043 PSHU A 00044 CLR HV POSITIVE SIGN CODE 00045 LDA DIVDND CHECK SIGN 00046 CMPA #0 IS IT LESS THAN ZERO? 00047 BGE NTOA1 GO IF NO 00048 STA HV NEGATIVE SIGN CODE 00049 JSR DS32X GO NEGATE DIVIDEND 00050 NTOA1 LDB BASEL2 00051 NOP 00052 CLR DIVSOR 00053 STB DIVSOR+1 BASE NOW IN DIVSOR 00054 JSR D3216 GO DO UNSIGNED DIVIDE 00055 LDB DIVSOR+1 GET CHARACTER NUMBER 00056 CMPB #10 CONVERT TO ASCII 00057 BLO NTOA2 00058 ADDB #55 ASCII OFFSET (>9) 00059 BRA NTOA3 00060 NTOA2 ADDB #48 ASCII OFFSET (<=9) 00061 NTOA3 PSHU B PUSH CHARACTER TO STACK 00062 LDX DIVDND+2 CHECK FOR END 00063 BNE NTOA1 00064 LDX DIVDND 00065 BNE NTOA1 00066 LDA HV GET SIGN 00067 BEQ NTOA4 GO IF POSITIVE 00068 LDA #45 ASCII MINUS SIGN 00069 PSHU A PUSH "-" TO STACK 00070 NTOA4 PULS A,B,X 00071 ZEND RTS 00072 END ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ00001 ************************* 00002 * 00003 * OUTPUT.ASM 00004 * MDJ 09-27-90 00005 * 00006 * DATA OUTPUT ROUTINES, 00007 * SCREEN AND PRINTER 00008 * 00009 ************************* 00010 * 00011 * REQUIRES: DCHAR 00012 * SCROLL 00013 * KBDCNT 00014 * KBDIN 00015 * 00016 ************************* 00017 * 00018 DCHAR EQU $3F00 CHARACTER DISPLAY ROUTINE 00019 CLRCHR EQU $41D1 CLEAR CHARACTER ROUTINE 00020 CURSCT EQU $430D CURSOR ADVANCE ROUTINE 00021 ADVCOD EQU $F7 ADVANCE CODE 00022 CRLF EQU $41FA CARRAIGE RETURN/LINE FEED ROUTINE 00023 SCROLL EQU $3F33 SCREEN SCROLL ROUTINE 00024 CR EQU $0D ENTER KEY ASCII CODE 00025 SKP2 EQU $8C SKIP TWO BYTES 00026 PIA1 EQU $FF20 PERIPHERAL INTERFACE ADAPTER #1 00027 DA EQU $FF20 SYNONYM FOR PIA1 00028 LPTBTD EQU $95 BAUD RATE 00029 LPTLND EQU $97 PRINTER CARRIAGE RETURN DELAY 00030 LPTWID EQU $9B PRINTER WIDTH 00031 LPTPOS EQU $9C LINE PRINTER POSITION 00032 ORG $45DC 00033 * 00034 ************************* 00035 * 00036 * PUTCHR AND PUTCHF PUT 00037 * A SINGLE CHARACTER TO 00038 * THE SCREEN - PUTCHR 00039 * CLEARS THE CURSOR 00040 * POSITION FIRST WHILE 00041 * PUTCHF DOES NOT 00042 * 00043 * ON ENTRY, THE CHARACTER 00044 * (8-BIT) MUST BE ON TOP 00045 * OF THE U-STACK - XCURS 00046 * & YCURS MUST POINT TO 00047 * THE SCREEN LOCATION 00048 * 00049 * NOTHING RETURNED 00050 * 00051 ************************* 00052 * 00053 PUTCHR JSR CLRCHR INLINE PCHAR FOR SPEED 00054 PUTCHF JSR DCHAR GO DISPLAY CHARACTER 00055 JMP CURSCT GO ADVANCE CURSOR 00056 * 00057 ************************* 00058 * 00059 * PRTCHR OUTPUTS A SINGLE 00060 * CHARACTER TO THE 00061 * LINEPRINTER 00062 * 00063 * ON ENTRY, THE CHARACTER 00064 * (8-BIT) MUST BE ON TOP 00065 * OF THE U-STACK AND 00066 * LPTBTD, LPTLND,LPTWID, 00067 * & LPTPOS MUST BE 00068 * PROPERLY DEFINED 00069 * 00070 * NOTHING RETURNED 00071 * 00072 * REF. PAGES A17 & A18 00073 * COLOR BASIC UNRAVELLED 00074 * 00075 ************************* 00076 * 00077 PRTCHR PSHS A 00078 PULU A GET CHARACTER 00079 PSHS A,B,X,CC 00080 ORCC #$50 DISABLE INTERRUPTS 00081 LA2C3 LDB PIA1+2 GET RS-232 STATUS 00082 LSRB SHIFT STATUS BIT INTO CARRY 00083 BCS LA2C3 LOOP UNTIL READY 00084 BSR LA2FB SET OUTPUT TO MARKING 00085 CLRB 00086 BSR LA2FD TRANSMIT ONE START BIT 00000001 ************************* 00002 * 00003 * M1616.ASM 00004 * MDJ 09-26-90 00005 * 00006 * 16-BIT BY 16-BIT 00007 * UNSIGNED INTEGER 00008 * MULTIPLY 00009 * 00010 ************************* 00011 * 00012 * U AND S STACKS MUST 00013 * ALREADY BE INITIALIZED 00014 * 00015 * ON ENTRY, MULTIPLICAND 00016 * #1 MUST BE IN MLTIC1 00017 * (16-BIT) AND 00018 * MULTIPLICAND #2 MUST BE 00019 * IN MLTIC2 (16-BIT) 00020 * 00021 * ON EXIT, THE 32-BIT 00022 * RESULT IS IN RESULT AND 00023 * A 16-BIT RESULT (IF 00024 * VALID) IS IN R16 00025 * 00026 ************************* 00027 MLTIC1 EQU $CB MULTIPLICAND #1 (SCRATCHPAD) 00028 MLTIC2 EQU $CD MULTIPLICAND #2 (SCRATCHPAD) 00029 RESULT EQU $CF 32-BIT RESULT (SCRATCHPAD) 00030 R16 EQU $D1 16-BIT RESULT (SCRATCHPAD) 00031 ORG $4327 00032 M1616 PSHS A,B 00033 CLR RESULT CLEAR RESULT LOCATIONS 00034 CLR RESULT+1 00035 CLR RESULT+2 00036 CLR RESULT+3 00037 LDA MLTIC1 MLTIC1 HIGH BYTE 00038 LDB MLTIC2 MLTIC2 HIGH BYTE 00039 MUL 00040 STD RESULT+4 T1D & T2D 00041 LDD MLTIC1+1 MLTIC1 LOW BYTE & MLTIC2 HI-BYTE 00042 MUL 00043 STD RESULT+6 T2C & T3C 00044 LDA MLTIC1 MLTIC1 HIGH BYTE 00045 LDB MLTIC2+1 MLTIC2 LOW BYTE 00046 MUL 00047 STD RESULT+8 T2B & T3B 00048 LDA MLTIC1+1 MLTIC1 LOW BYTE 00049 LDB MLTIC2+1 MLTIC2 LOW BYTE 00050 MUL 00051 STD RESULT+10 T3A & T4A 00052 LDA RESULT+11 T4A 00053 STA RESULT+3 R4 00054 LDA RESULT+10 T3A 00055 ADDA RESULT+9 +T3B 00056 BCC M16A BRANCH IF NO CARRY 00057 INC RESULT+1 R2=R2+1 00058 M16A ADDA RESULT+7 +T3C 00059 BCC M16B BRANCH IF NO CARRY 00060 INC RESULT+1 R2=R2+1 00061 M16B STA RESULT+2 R3 00062 LDA RESULT+1 R2 00063 ADDA RESULT+8 +T2B 00064 BCC M16C BRANCH IF NO CARRY 00065 INC RESULT R1=R1+1 00066 M16C ADDA RESULT+6 +T2C 00067 BCC M16D BRANCH IF NO CARRY 00068 INC RESULT R1=R1+1 00069 M16D ADDA RESULT+5 +T2D 00070 BCC M16E BRANCH IF NO CARRY 00071 INC RESULT R1=R1+1 00072 M16E STA RESULT+1 R2 00073 LDA RESULT R1 00074 ADDA RESULT+4 +T1D 00075 STA RESULT R1 00076 PULS A,B 00077 ZEND RTS 00078 END ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ00001 ************************* 00002 * 00003 * M3208.ASM 00004 * MDJ 09-26-90 00005 * 00006 * 32-BIT BY 8-BIT 00007 * UNSIGNED INTEGER 00008 * MULTIPLY 00009 * 00010 ************************* 00011 * 00012 * U AND S STACKS MUST 00013 * ALREADY BE INITIALIZED 00014 * 00015 * ON ENTRY, 32-BIT 00016 * MULTIPLICAND MUST BE IN 00017 * MLTIC1 AND 8-BIT 00018 * MULTIPLICAND MUST BE IN 00019 * MLTICB 00020 * 00021 * ON RETURN, 32-BIT 00022 * RESULT IS IN RESULT AND 00023 * 16-BIT RESULT (IF 00024 * VALID) IS IN R16 00025 * 00026 ************************* 00027 * 00028 * THIS ROUTINE IS OF 00029 * PRIMARY VALUE FOR 00030 * NUMBER TO CHARACTER 00031 * CONVERSIONS AND VICE 00032 * VERSA 00033 * 00034 ************************* 00035 * 00036 MLTIC1 EQU $CB 32-BIT MULTIPLICAND (SCRATCHPAD) 00037 MLTICB EQU $CF 8-BIT MULTIPLICAND (SCRATCHPAD) 00038 RESULT EQU $CF 32-BIT RESULT (SCRATCHPAD) 00039 R16 EQU $D1 16-BIT RESULT (SCRATCHPAD) 00040 ORG $4460 00041 M3208 PSHS A,B 00042 LDB MLTICB SET-UP ITERATIVE MLTICB 00043 PSHS B 00044 PSHS B 00045 PSHS B 00046 PSHS B 00047 CLR RESULT CLEAR RESULT 00048 CLR RESULT+1 00049 CLR RESULT+2 00050 CLR RESULT+3 00051 LDA MLTIC1+3 00052 PULS B MLTICB 00053 MUL A4*B1 00054 STD RESULT+10 T3A & T4A 00055 LDA MLTIC1+2 00056 PULS B MLTICB 00057 MUL A3*B1 00058 STD RESULT+8 T2A & T3B 00059 LDA MLTIC1+1 00060 PULS B MLTICB 00061 MUL A2*B1 00062 STD RESULT+6 T1A & T2B 00063 LDA MLTIC1 00064 PULS B MLTICB 00065 MUL A1*B1 00066 STD RESULT+4 T0A &T1B 00067 LDA RESULT+11 T4A 00068 STA RESULT+3 R4 00069 LDA RESULT+10 T3A 00070 ADDA RESULT+9 +T3B 00071 STA RESULT+2 R3 00072 LDA RESULT+8 T2A 00073 ADCA RESULT+7 +T2B 00074 STA RESULT+1 R2 00075 LDA RESULT+6 T1A 00076 ADCA RESULT+5 +T1B 00077 STA RESULT R1 00078 PULS A,B 00079 ZEND RTS 00080 END ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿCB DECREMENT CHARACTER COUNT 00078 BRA INLNLP RETURN FOR NEXT KEYPRESS 00079 INLN2 CMPA #21 IS IT A LINE DELETE? 00080 BNE INLN3 GO IF NO 00081 CMPB #0 IS COUNTER = 0? 00082 BEQ INLNLP IGNORE LINE DELETE IF YES 00083 JSR CLRLIN CLEAR INPUT LINE FROM SCREEN 00084 JSR CLRTIB CLEAR TERMINAL INPUT BUFFER 00085 LDX #TIB POINT TO START OF TIB 00086 CLRB CLEAR CHARACTER COUNTER 00087 BRA INLNLP RETURN FOR NEXT KEYPRESS 00088 INLN3 CMPA #13 IS IT THE ENTER KEY? 00089 BNE INLN4 GO IF NO 00090 CMPX #ETIB END OF BUFFER? 00091 BNE INLN3A GO IF NO 00092 INCB INCREMENT THE CHARACTER COUNTER 00093 BRA INLNEX 00094 INLN3A JSR CLRCHR STORE A SPACE TO THE SCREEN 00095 LDA #32 SPACEBAR CODE 00096 STA ,X STORE TO TIB 00097 JSR CURSCT GO ADVANCE CURSOR 00098 INCB INCREMENT CHARACTER COUNTER 00099 BRA INLNEX 00100 INLN4 CMPA #32 IS IT THE SPACEBAR? 00101 BNE INLN5 GO IF NO 00102 JSR CLRCHR STORE A SPACE TO THE SCREEN 00103 BRA INLN6 GO STORE TO TIB 00104 INLN5 CMPA #33 IS IT BELOW PRINTABLE RANGE 00105 BLO INLNLP IGNORE IF YES 00106 CMPA #126 IS IT ABOVE PRINTABLE RANGE 00107 BHI INLNLP IGNORE IF YES 00108 PSHU A 00109 JSR PCHAR GO DISPLAY CHARACTER 00110 INLN6 STA ,X STORE CHARACTER TO TIB 00111 CMPX #ETIB END OF BUFFER? 00112 BEQ INLNLP GO IF YES 00113 JSR CURSCT GO ADVANCE CURSOR 00114 LEAX 1,X INCREMENT TIB POINTER 00115 INCB INCREMENT CHARACTER COUNTER 00116 BRA INLNLP RETURN FOR NEXT KEYPRESS 00117 INLNEX STB NTIB STORE CHARACTER COUNT TO NTIB 00118 LDX #TIB RESET POINTER 00119 STX LBP STORE TO LINE BUFFER POINTER 00120 PULS A,B,X,Y 00121 RTS 00122 HXCURS RMB 2 TEMPORARY CURSOR X LOCATION 00123 HYCURS RMB 2 TEMPORARY CURSOR Y LOCATION 00124 * 00125 ************************* 00126 * 00127 * CLRTIB CLEARS THE 00128 * TERMINAL INPUT BUFFER 00129 * 00130 ************************* 00131 CLRTIB PSHS A,X 00132 LDX #NTIB 00133 CLR ,X+ 00134 LDA #32 00135 CLTB1 STA ,X+ 00136 CMPX #ETIB 00137 BLS CLTB1 00138 PULS A,X 00139 RTS 00140 * 00141 ************************* 00142 * 00143 * CLRLIN CLEARS THE INPUT 00144 * LINE 00145 * 00146 ************************* 00147 * 00148 CLRLIN PSHS X,Y 00149 JSR CLRCHR 00150 CLLN1 JSR BKSP 00151 JSR CLRCHR 00152 LDY YCURS GET THE CURSOR Y LOCATION 00153 CMPY HYCURS IS IT = THE TEMPORARY VALUE? 00154 BHI CLLN1 GO IF NO 00155 LDX XCURS GET THE CURSOR X LOCATION 00156 CMPX HXCURS IS IT = THE TEMPORARY VALUE? 00157 BHI CLLN1 GO IF NO 00158 PULS X,Y 00159 RTS 00160 * 00161 ************************* 00162 * 00163 * CURSCT ADVANCES THE 00164 * CURSOR, SCROLLS THE 00165 * SCREEN IF NECESSARY, 00166 * AND ADVANCES THE 00167 * TEMPORARY CURSOR 00168 * 00169 ************************* 00170 * 00171 CURSCT PSHS A,B 00172 JSR CURSP ADVANCE THE CURSOR 00173 LDA ADVCOD GET THE ADVANCE CODE 00174 CMPA #1 IS IT SET? 00175 BNE CRST1 GO IF NO 00176 JSR SCROLL SCROLL THE SCREEN IF SET 00177 LDD HYCURS TEMPORARY CURSOR Y LOCATION 00178 SUBD #8 ADVANCE SCREEN ADJUST 00179 STD HYCURS 00180 CRST1 PULS A,B 00181 ZEND RTS 00182 END ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ CHARACTER LINE CLEARED? 00096 BEQ CC3 GO IF YES 00097 LEAX -1,X 00098 BRA CC2 RETURN FOR NEXT POINT 00099 CC3 CMPY YCURS CHARACTER CLEARED? 00100 BEQ CC4 GO IF YES 00101 LEAY -1,Y 00102 BRA CC1 RETURN FOR NEXT LINE 00103 CC4 PULS A,B,X,Y 00104 RTS 00105 * 00106 ************************* 00107 * 00108 * CRLF PERFORMS A 00109 * CARRIAGE RETURN/ 00110 * LINE FEED 00111 * 00112 ************************* 00113 * 00114 CRLF PSHS A 00115 JSR DNLN DOWN ONE LINE 00116 LDA ADVCOD GET ADVANCE CODE 00117 CMPA #0 IS IT CLEAR? 00118 BNE CRLF1 GO IF SET 00119 JSR BEGLIN CURSOR TO BEGINNING OF LINE 00120 CRLF1 PULS A 00121 RTS 00122 * 00123 ************************* 00124 * 00125 * CURSCR ADVANCES THE 00126 * CURSOR AND SCROLLS IF 00127 * REQUIRED 00128 * 00129 ************************* 00130 * 00131 CURSCR PSHS A 00132 JSR CURSP ADVANCE CURSOR 00133 LDA ADVCOD GET ADVANCE CODE 00134 CMPA #1 IS IT SET 00135 BNE CRSR1 GO IF NO 00136 JSR SCROLL GO SCROLL SCREEN IF YES 00137 CRSR1 PULS A 00138 RTS 00139 * 00140 ************************* 00141 * 00142 * DNLN MOVES THE CURSOR 00143 * DOWN ONE LINE 00144 * 00145 ************************* 00146 * 00147 DNLN PSHS A,B,Y 00148 LDD YCURS GET CURSOR Y LOCATION 00149 ADDD #8 Y INCREMENT 00150 TFR D,Y 00151 CMPY #192 PAST END OF SCREEN? 00152 BLO DNLN1 GO IF NO 00153 LDY #184 RESET CURSOR Y LOCATION 00154 LDA #1 00155 STA ADVCOD SET ADVANCE CODE 00156 DNLN1 STY YCURS NEW CURSOR Y LOCATION 00157 PULS A,B,Y 00158 RTS 00159 * 00160 ************************* 00161 * 00162 * PCHAR DISPLAYS A 00163 * CHARACTER AFTER 00164 * CLEARING THE CURSOR 00165 * LOCATION 00166 * 00167 * ON ENTRY, THE CHARACTER 00168 * NUMBER (8-BIT, ASCII 33 00169 * MINIMUM, ASCII 126 00170 * MAXIMUM) MUST BE ON TOP 00171 * OF THE U-STACK, THE 00172 * X-CURSOR LOCATION MUST 00173 * BE IN XCURS, AND THE 00174 * Y-CURSOR LOCATION MUST 00175 * BE IN YCURS - XCURS & 00176 * YCURS ARE BOTH 16-BIT 00177 * 00178 * NOTHING RETURNED 00179 * 00180 ************************* 00181 PCHAR JSR CLRCHR GO CLEAR CHARACTER 00182 JMP DCHAR GO DISPLAY CHARACTER 00183 ZEXTV RMB 1 EXTERNAL TEMPORARY VARIABLE 00184 END ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ00001 ************************* 00002 * 00003 * KBDIN.ASM 00004 * MDJ 09-26-90 00005 * 00006 * KEYBOARD INPUT MANAGER 00007 * 00008 ************************* 00009 * 00010 * REQUIRES: SCROLL 00011 * CURSP 00012 * KEYBD 00013 * KBDCNT 00014 * 00015 * FOR EACH OF THE 00016 * ROUTINES IN THIS 00017 * MANAGER: 00018 * NO ENTRY CONDITIONS 00019 * ON RETURN, THE 00020 * TERMINAL INPUT BUFFER 00021 * (TIB) AND ITS COUNTER 00022 * (NTIB) WILL HAVE BEEN 00023 * AFFECTED 00024 * 00025 ************************* 00026 * 00027 ADVCOD EQU $F7 ADVANCE CODE 00028 BKSP EQU $41A0 BACKSPACE ROUTINE 00029 CLRCHR EQU $41D1 CLEAR CHARACTER ROUTINE 00030 CRLF EQU $41FA CARRIAGE RETURN/LINE FEED ROUTINE 00031 CURSCR EQU $420B CURSOR ADVANCE/SCROLL ROUTINE 00032 CURSP EQU $3F6B CURSOR ADVANCE ROUTINE 00033 ETIB EQU $02D9 END OF TERMINAL INPUT BUFFER 00034 KEYBD EQU $3FAA KEYPRESS TRANSLATOR 00035 LBP EQU $FA LINE BUFFER POINTER 00036 NTIB EQU $01D9 NUMBER OF CHARACTERS IN TIB 00037 PCHAR EQU $4239 CHARACTER CLEAR/DISPLAY ROUTINE 00038 SCROLL EQU $3F33 SCREEN SCROLL ROUTINE 00039 TIB EQU $01DA START OF TERMINAL INPUT BUFFER 00040 XCURS EQU $F3 CURSOR X LOCATION 00041 YCURS EQU $F5 CURSOR Y LOCATION 00042 ORG $4240 00043 * 00044 ************************* 00045 * 00046 * KBDIN INPUTS A LINE 00047 * (256 CHARACTERS MAX) 00048 * TO THE TERMINAL INPUT 00049 * BUFFER 00050 * 00051 ************************* 00052 * 00053 KBDIN PSHS A,B,X,Y 00054 JSR CRLF GO TO START OF NEXT SCREEN LINE 00055 LDA ADVCOD GET ADVANCE CODE 00056 CMPA #1 IS IT SET? 00057 BNE INLN1 GO IF NO 00058 JSR SCROLL SCROLL SCREEN IF SET 00059 INLN1 LDX XCURS GET CURSOR X LOCATION 00060 STX HXCURS TEMPORARY SAVE 00061 LDX YCURS GET CURSOR Y LOCATION 00062 STX HYCURS TEMPORARY SAVE 00063 JSR CLRTIB CLEAR TERMINAL INPUT BUFFER 00064 LDX #TIB POINT TO START OF TIB 00065 CLRB CLEAR CHARACTER COUNTER 00066 INLNLP JSR KEYBD GET A KEY FROM THE KEYBOARD 00067 PULU A 00068 CMPA #8 IS IT A BACKSPACE? 00069 BNE INLN2 GO IF NO 00070 CMPB #0 IS COUNTER = 0? 00071 BEQ INLNLP IGNORE BACKSPACE IF YES 00072 JSR CLRCHR CLEAR CHARACTER FROM SCREEN 00073 JSR BKSP BACKSPACE SCREEN CURSOR 00074 LDA #32 SPACEBAR CODE 00075 STA ,X STORE TO TIB 00076 LEAX -1,X DECREMENT TIB POINTER 00077 DE00001 ************************* 00002 * 00003 * GPSET.ASM 00004 * MDJ 04-23-91 00005 * 00006 * PSET, PSETS, AND LINE 00007 * NORMALIZATION 00008 * OF COORDINATES 00009 * ROUTINES PLUS PCLSS 00010 * IMPLEMENTATION 00011 * 00012 ************************* 00013 * 00014 * GPSETS CALLED BY PSETS 00015 * GPSET CALLED BY PSET 00016 * GLINE CALLED BY LINE 00017 * GPCLSS CALLED BY PCLSS 00018 * 00019 * PSETS, PCLSS, 00020 * PSET & LINE IN GPKG.ASM 00021 * 00022 ************************* 00023 * 00024 FORCOL EQU $B2 00025 BAKCOL EQU $B3 00026 HORBEG EQU $BD 00027 VERBEG EQU $BF 00028 SETFLG EQU $C2 00029 XPCLSS EQU $3BDE 00030 RPSET EQU $9374 00031 RNORM1 EQU $931D 00032 RNORM EQU $9420 00033 RLINE EQU $94A1 00034 RSACT EQU $959A 00035 RXCLSS EQU $9563 00036 RAMROM EQU $FFDE 00037 ALLRAM EQU $FFDF 00038 ORG $47AD 00039 GPSETS PSHS A 00040 LDA #1 USE TEMP. FOREGROUND COLOR 00041 BSR GPSET 00042 PULS A RESTORE CURRENT COLOR NUMBER 00043 STA FORCOL 00044 PULS A,B 00045 RTS 00046 GPSET STA SETFLG 00047 PULU A,B 00048 STD HORBEG 00049 PULU A,B 00050 STD VERBEG 00051 PSHS A,B,X,Y,U,DP,CC 00052 STA RAMROM SET RAM/ROM MODE 00053 JSR RNORM1 GO DO ROM NORMALIZE 00054 JSR RSACT GO DO ROM SET ACTIVE COLOR 00055 JSR RPSET GO DO ROM PSET 00056 STA ALLRAM SET ALL RAM MODE 00057 PULS A,B,X,Y,U,DP,CC 00058 RTS 00059 GLINE PSHS A,B,X,Y,U,DP,CC 00060 STA RAMROM SET RAM/ROM MODE 00061 JSR RNORM GO DO ROM NORMALIZE 00062 JSR RSACT GO DO ROM SET ACTIVE COLOR 00063 JSR RLINE GO DO ROM LINE 00064 STA ALLRAM SET ALL RAM MODE 00065 PULS A,B,X,Y,U,DP,CC 00066 RTS 00067 GPCLSS PULU A,B GET COLOR NUMBER 00068 STA RAMROM SET RAM/ROM MODE 00069 JSR RXCLSS GO DO ROM XCLSS 00070 STA ALLRAM SET ALL RAM MODE 00071 JSR XPCLSS 00072 ZEND RTS 00073 END 072 STB BAKCOL SET TEMPÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ00001 ************************* 00002 * 00003 * KBDCNT.ASM 00004 * MDJ 09-26-90 00005 * 00006 * KEYBOARD INPUT CONTROL 00007 * ROUTINES PACKAGE 00008 * 00009 ************************* 00010 * 00011 * REQUIRES: GPKG 00012 * DCHAR 00013 * SCROLL 00014 * CURSP 00015 * 00016 * EXCEPT PCHAR, FOR THE 00017 * ROUTINES IN THIS PKG: 00018 * NO ENTRY CONDITIONS 00019 * & NOTHING RETURNED 00020 * 00021 ************************* 00022 * 00023 ADVCOD EQU $F7 ADVANCE CODE 00024 BAKCOD EQU $F8 BACKUP CODE 00025 CURSP EQU $3F6B CURSOR ADVANCE ROUTINE 00026 DCHAR EQU $3F00 DISPLAY CHARACTER ROUTINE 00027 PRESET EQU $3E7A POINT RESET ROUTINE 00028 SCROLL EQU $3F33 SCREEN SCROLL ROUTINE 00029 XCURS EQU $F3 CURSOR X LOCATION 00030 YCURS EQU $F5 CURSOR Y LOCATION 00031 ORG $4196 00032 * 00033 ************************* 00034 * 00035 * BEGLIN MOVES THE CURSOR 00036 * TO THE BEGINNING OF THE 00037 * CURRENT LINE 00038 * 00039 ************************* 00040 * 00041 BEGLIN PSHS X 00042 LDX #0 00043 STX XCURS RESET THE CURSOR X LOCATION 00044 PULS X 00045 RTS 00046 * 00047 ************************* 00048 * 00049 * BKSP BACKSPACES THE 00050 * CURSOR 00051 * 00052 ************************* 00053 * 00054 BKSP PSHS A,B 00055 LDD XCURS GET CURSOR X LOCATION 00056 CMPD #0 START OF LINE? 00057 BEQ BKSP1 GO IF YES 00058 SUBD #4 X DECREMENT 00059 STD XCURS NEW CURSOR X LOCATION 00060 BRA BKSP3 00061 BKSP1 LDD #252 00062 STD XCURS RESET CURSOR X LOCATION 00063 LDD YCURS GET CURSOR Y LOCATION 00064 CMPD #0 START OF SCREEN? 00065 BEQ BKSP2 GO IF YES 00066 SUBD #8 Y DECREMENT 00067 STD YCURS NEW CURSOR Y LOCATION 00068 BRA BKSP3 00069 BKSP2 LDD #0 00070 STD XCURS RESET CURSOR X LOCATION 00071 LDA #1 00072 STA BAKCOD SET BACKUP CODE 00073 BKSP3 PULS A,B 00074 RTS 00075 * 00076 ************************* 00077 * 00078 * CLRCHR CLEARS THE 00079 * CHARACTER AT THE 00080 * CURRENT CURSOR LOCATION 00081 * 00082 ************************* 00083 * 00084 CLRCHR PSHS A,B,X,Y 00085 LDB #7 00086 LDX YCURS GET CURSOR Y LOCATION 00087 ABX POINT TO BOTTOM OF CHARACTER 00088 TFR X,Y 00089 CC1 LDB #2 00090 LDX XCURS GET CURSOR X LOCATION 00091 ABX POINT TO RIGHT EDGE OF CHARACTER 00092 CC2 PSHU Y 00093 PSHU X 00094 JSR PRESET GO CLEAR POINT 00095 CMPX XCURS00081 LDA RDYTMR GET TIMER 00082 BEQ LD7DA BRANCH IF NOT ACTIVE 00083 DECA DECREMENT THE TIMER 00084 STA RDYTMR SAVE IT 00085 BNE LD7DA BRANCH IF NOT TIME TO TURN OFF 00086 * DISK MOTORS 00087 LDA DRGRAM GET DSKREG IMAGE 00088 ANDA #$B0 TURN MOTORS & DRIVE SELECTS OFF 00089 STA DRGRAM PUT IT BACK IN RAM IMAGE 00090 STA DSKREG SEND TO CONTROL REGISTERS 00091 LD7DA LDX TIMVAL GET REAL TIME CLOCK 00092 * (CF. PAGE B22, ECB UNRAVELLED) 00093 LEAX 1,X INCREMENT IT 00094 STX TIMVAL SAVE IT 00095 CLRA (CF. PAGES B73 & B74, ECB UNRAV.) 00096 TFR A,DP SET THE DIRECT PAGE TO ZERO 00097 LDD PLYTMR GET THE "PLAY" TIMER 00098 BEQ LA9BB GO IF ZERO 00099 SUBD VD5 SUBTRACT INTERVAL 00100 STD PLYTMR SAVE NEW TIMER VALUE 00101 BHI L9C5A GO IF NOT DONE 00102 CLR PLYTMR RESET MSB IF DONE 00103 CLR PLYTMR+1 RESET LSB 00104 PULS A GET THE CONDITION CODE REGISTER 00105 LDS 7,S LOAD S-STACK POINTER WITH THE 00106 * CONTENTS OF THE U REGISTER 00107 ANDA #$7F CLEAR E FLAG 00108 PSHS A SAVE THE CONDITION CODE 00109 L9C5A RTI RETURN FROM INTERRUPT 00110 LA9BB LDX >SNDDUR (CF. PAGES A36 & A37, COLOR BASIC 00111 * UNRAVELLED 00112 BEQ LA9C5 RETURN IF TIMER = 0 00113 LEAX -1,X DECREMENT TIMER 00114 LA9C2 STX >SNDDUR SAVE NEW TIMER VALUE 00115 LA9C5 RTI RETURN FROM INTERRUPT 00116 LZ7D1 LDX ZERO TIME DELAY ROUTINE 00117 LZ7D3 LEAX -1,X 00118 BNE LZ7D3 00119 RTS 00120 * 00121 ************************* 00122 * 00123 * INTSET SETS-UP THE 00124 * SYSTEM INTERRUPT 00125 * SERVICE CALL ROUTINES 00126 * 00127 ************************* 00128 * 00129 INTSET PSHS X 00130 ORCC #$50 DISABLE INTERRUPTS 00131 LDX #DNMISV SET NMI VECTOR 00132 STX NMIVEC+1 00133 LDX #DIRQSV SET IRQ VECTOR 00134 STX IRQVEC+1 00135 LDX #FIRQSV SET FIRQ VECTOR 00136 STX FRQVEC+1 00137 ANDCC #$AF ENABLE INTERRUPTS 00138 PULS X 00139 RTS 00140 FIRQSV RTI DUMMIED FIRQ SERVICE 00141 * 00142 ************************* 00143 * 00144 * DSKSTP STOPS THE DISK 00145 * DRIVE MOTORS 00146 * 00147 ************************* 00148 * 00149 DSKSTP PSHS A 00150 CLRA 00151 STA DSKREG 00152 PULS A 00153 RTS 00154 * 00155 ************************* 00156 * 00157 * DSKOPN PERFORMS A DISK 00158 * OPERATION (DKREAD 00159 * READS A SECTOR, DKWRIT 00160 * WRITES A SECTOR) 00161 * 00162 * REFER TO PAGE 126 OF 00163 * THE COCO DISK SYSTEM 00164 * MANUAL FOR ENTRY AND 00165 * EXIT CONDITIONS 00166 * 00167 ************************* 00168 * 00169 DSKOPN PSHS A,B,X,Y 00170 LDB #5 SET THE # OF RETRIES LIMIT 00171 PULU A GET THE OPERATION CODE 00172 STA DCOPC STORE IT 00173 DSKOP1 JSR DSKCON GO DO DISK OPERATION 00174 LDA DCSTA LOAD STATUS BYTE 00175 BEQ DSKOP2 GO IF NO DISK ERROR 00176 DECB DECREMENT RETRY COUNTER 00177 BNE DSKOP1 GO RETRY UNTIL LIMIT 00178 LDX EML GET ERROR MESSAGE LENGTH 00179 LDY #EM GET ERROR MESSAGE START LOCATION 00180 JSR TYPER GO OUTPUT ERROR MESSAGE 00181 JSR CRLFS 00182 DSKOP2 JSR DSKSTP GO STOP DISK MOTORS 00183 PULS A,B,X,Y 00184 RTS 00185 EML FCB 20 00186 EM FCC '** DISK I/O ERROR **' 00187 DKREAD PSHS A 00188 LDA #2 "READ" OPERATION CODE 00189 PSHU A PUSH TO STACK 00190 JSR DSKOPN GO READ SECTOR 00191 PULS A 00192 RTS 00193 DKWRIT PSHS A 00194 LDA #3 "WRITE" OPERATION CODE 00195 PSHU A PUSH TO STACK 00196 JSR DSKOPN GO WRITE SECTOR 00197 PULS A 00198 ZEND RTS 00199 END ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ00001 ************************* 00002 * 00003 * D3216.ASM 00004 * MDJ 09-26-90 00005 * 00006 * 32-BIT BY 16-BIT 00007 * UNSIGNED INTEGER 00008 * DIVIDE 00009 * 00010 ************************* 00011 * 00012 * U AND S STACKS MUST 00013 * ALREADY BE INITIALIZED 00014 * 00015 * ON ENTRY, 32-BIT 00016 * DIVIDEND MUST BE IN 00017 * DIVDND AND 16-BIT 00018 * DIVISOR MUST BE IN 00019 * DIVSOR 00020 * 00021 * ON RETURN, 32-BIT 00022 * QUOTIENT IS IN QUOTNT 00023 * AND 16-BIT MODULUS 00024 * (REMAINDER) IS IN 00025 * MODLUS 00026 * 00027 ************************* 00028 * 00029 DIVDND EQU $CB 32-BIT DIVIDEND (SCRATCHPAD) 00030 DIVSOR EQU $CF 16-BIT DIVISOR (SCRATCHPAD) 00031 QUOTNT EQU $CB 32-BIT QUOTIENT 00032 MODLUS EQU $CF 16-BIT MODULUS 00033 ORG $437E 00034 D3216 PSHS A,B,X 00035 CLRA 00036 CLRB 00037 LDX #32 SHIFT COUNT 00038 DIVA LSL DIVDND+3 DO SHIFT 00039 ROL DIVDND+2 00040 ROL DIVDND+1 00041 ROL DIVDND 00042 ROLB 00043 ROLA 00044 BCC DIVB GO IF NO CARRY ON SHIFT 00045 SUBD DIVSOR SUBTRACT MUST GO 00046 BRA DIVC GO SET QUOTIENT BIT = 1 00047 DIVB SUBD DIVSOR DO SUBTRACT 00048 BHS DIVC GO IF + OR 0 RESULT 00049 ADDD DIVSOR ADD BACK IN IF - RESULT 00050 BRA DIVD GO LEAVE QUOTIENT BIT = 0 00051 DIVC INC QUOTNT+3 SET QUOTIENT BIT = 1 00052 DIVD LEAX -1,X DECREMENT COUNT 00053 BNE DIVA RETURN FOR NEXT SHIFT 00054 STD MODLUS STORE MODULUS 00055 PULS A,B,X 00056 ZEND RTS 00057 END ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ00001 ************************* 00002 * 00003 * DISKOP.ASM 00004 * MDJ 09-27-90 00005 * 00006 * DISK OPERATIONS PACKAGE 00007 * 00008 ************************* 00009 * 00010 * REQUIRES: OUTPUT 00011 * 00012 * REF. PAGES B-59 TO B-62 00013 * DISK BASIC UNRAVELLED 00014 * 00015 ************************* 00016 * 00017 DNMIVC EQU $0983 NMI OUT VECTOR 00018 NMIVEC EQU $0109 NMI VECTOR 00019 IRQVEC EQU $010C IRQ VECTOR 00020 FRQVEC EQU $010F FIRQ VECTOR 00021 DRGRAM EQU $0986 RAM IMAGE OF DSKREG ($FF40) 00022 DSKREG EQU $FF40 DISK CONTROL REGISTER (PIA2) 00023 NMIFLG EQU $0982 NMI FLAG (<>0 = VECTOR OUT) 00024 PIA0 EQU $FF00 PERIPHERAL INTERFACE ADAPTER ZERO 00025 PLYTMR EQU $E3 BASIC "PLAY" COMMAND TIMER 00026 RDYTMR EQU $0985 MOTOR TURN-OFF TIMER 00027 TIMVAL EQU $0112 TIMER VALUE 00028 SNDDUR EQU $8D DURATION VALUE, "SOUND" COMMAND 00029 VD5 EQU $D5 SCRATCH PAD VARIABLE 00030 ZERO EQU $8A THESE TWO BYTES ARE ALWAYS ZERO 00031 DCOPC EQU $EA DISK OPERATION CODE 00032 DCSTA EQU $F0 DISK STATUS BYTE 00033 TYPER EQU $4639 MESSAGE OUTPUT ROUTINE 00034 ALLRAM EQU $FFDF ALL RAM MODE 00035 RAMROM EQU $FFDE RAM/ROM MODE 00036 XDSKON EQU $C004 ROM DSKCON JUMP ADDRESS 00037 CRLFS EQU $4694 CARRIAGE RETURN/LINE FEED/SCROLL 00038 ORG $46A7 00039 * 00040 ************************* 00041 * 00042 * DSKCON EXECUTES THE 00043 * COCO ROM DSKCON 00044 * ROUTINE 00045 * 00046 ************************* 00047 * 00048 DSKCON PSHS A,B,X,Y,U,DP,CC 00049 STA RAMROM SET RAM/ROM MODE 00050 JSR [XDSKON] GO TO ROM DSKCON 00051 STA ALLRAM SET ALLRAM MODE 00052 PULS A,B,X,Y,U,DP,CC 00053 RTS 00054 * 00055 ************************* 00056 * 00057 * DNMISV IS THE NMI 00058 * INTERRUPT SERVICE 00059 * ROUTINE 00060 * 00061 ************************* 00062 * 00063 DNMISV LDA NMIFLG GET THE NMI FLAG 00064 BEQ LD7BB RETURN IF NOT ACTIVE 00065 LDX DNMIVC GET THE NEW RETURN VECTOR 00066 STX 10,S STORE AT STACKED PC ON S-STACK 00067 CLR NMIFLG RESET NMI FLAG 00068 LD7BB RTI RETURN FROM INTERRUPT 00069 * 00070 ************************* 00071 * 00072 * DIRQSV IS THE IRQ 00073 * INTERRUPT SERVICE 00074 * ROUTINE 00075 * 00076 ************************* 00077 * 00078 DIRQSV LDA PIA0+3 63.5 MS OR 60 HZ INTERRUPT? 00079 BPL LD7BB RETURN IF 63.5 MS INTERRUPT 00080 LDA PIA0+2 RESET 60 HZ PIA INTERRUPT FLAG 00010 ************************* 00020 * 00030 * ATONCV.ASM 00040 * MDJ 09-26-90 00050 * 00060 * CONVERTS A STRING OF 00070 * ASCII CHARACTERS TO 00080 * A NUMBER 00090 * 00100 ************************* 00110 * 00120 * REQUIRES: M3208 00130 * 00140 * NUMBER BASE MUST 00150 * ALREADY BE SET AT BASE 00160 * ($03DD) 00170 * 00180 * ON ENTRY: 00190 * NUMBER OF CHARACTERS 00200 * IN STRING MUST BE IN 00210 * REGISTER X 00220 * STRING START LOCATION 00230 * MUST BE IN REGISTER Y 00240 * 00250 * ON RETURN: 00260 * IF NOT A VALID NUMBER, 00270 * 16-BIT FALSE FLAG 00280 * ($0000) ON U-STACK 00290 * IF A VALID 16-BIT 00300 * NUMBER, 16-BIT TRUE 00310 * FLAG ($FFFF) ON TOP 00320 * OF 16-BIT NUMBER ON 00330 * U-STACK 00340 * IF A VALID 32-BIT 00350 * NUMBER, MODIFIED 00360 * 16-BIT TRUE FLAG 00370 * ($00FF) ON TOP OF 00380 * 32-BIT NUMBER ON 00390 * U-STACK 00400 * 00410 ************************* 00420 * 00430 BASEL2 EQU $FD NUMBER BASE 00440 M3208 EQU $4460 UNSIGNED 32 BY 8 MULTIPLY ROUTINE 00450 MLTIC1 EQU $CB 32-BIT MULTIPLICAND 00460 MLTICB EQU $CF 8-BIT MULTIPLICAND 00470 RESULT EQU $CF 32-BIT RESULT 00471 ATONW EQU $478E LAST DIGIT ADJUSTMENT ROUTINE 00480 ORG $44A9 00490 ATONCV PSHS A,B 00500 CLR TSV = 0 IMPLIES A POSITIVE NUMBER 00510 CLR TDV = 0 IMPLIES A 16-BIT NUMBER 00520 CLR NUMBER CLEAR TEMPORARY COMBINED RESULT 00530 CLR NUMBER+1 00540 CLR NUMBER+2 00550 CLR NUMBER+3 00560 ATONA LDB ,Y+ GET CHARACTER 00570 CMPB #45 MINUS SIGN? 00580 BNE ATONB GO IF NO 00590 LDA #$FF NEGATIVE NUMBER CODE 00600 STA TSV 00620 BRA ATONZ GO FOR NEXT CHARACTER 00630 ATONB CMPB #37 "%" (DOUBLE # IDENTIFIER)? 00640 BNE ATONC GO IF NO 00650 LDA #$FF DOUBLE NUMBER CODE 00660 STA TDV 00670 ATONZ LEAX -1,X DECREMENT CHARACTER COUNT 00671 LBEQ ATONW GO IF END OF CONVERSION 00680 BRA ATONA GO FOR NEXT CHARACTER 00690 ATONC SUBB #48 ASCII "0" CODE 00700 CMPB #0 BELOW VALID CHARACTER NUMBER? 00710 BLO ERRX GO IF YES 00720 CMPB #10 ABOVE STANDARD DIGIT NUMBER? 00730 BLO ATOND GO IF NO 00740 SUBB #7 ASCII "A" OFFSET 00750 CMPB #10 BELOW VALID CHARACTER NUMBER? 00760 BLO ERRX GO IF YES 00770 CMPB BASEL2 BELOW BASE? 00790 BHS ERRX GO IF NO 00800 ATOND CLRA CHARACTER VALUE IN B NOW IN D 00810 ADDD NUMBER+2 ADD TO RESULT HOLDER 00820 STD NUMBER+2 00830 LDA NUMBER+1 00840 ADCA #0 00850 STA NUMBER+1 00860 LDA NUMBER 00870 ADCA #0 00880 STA NUMBER 00890 LEAX -1,X DECREMENT CHARACTER COUNTER 00900 BEQ ATONX GO IF END OF CONVERSION 00910 LDD NUMBER 00920 STD MLTIC1 00930 LDD NUMBER+2 00940 STD MLTIC1+2 00950 LDB BASEL2 00970 STB MLTICB 00980 JSR M3208 GO MULTIPLY 00990 LDD RESULT 01000 STD NUMBER 01010 LDD RESULT+2 01020 STD NUMBER+2 01030 BRA ATONA GO FOR NEXT CHARACTER 01040 ATONX LDA TSV GET SIGN 01050 CMPA #0 POSITIVE? 01060 BEQ ATONE GO IF YES 01070 LDA TDV GET DOUBLE NUMBER CODE 01080 CMPA #0 IS IT A SINGLE NUMBER? 01090 BEQ ATONY GO IF YES 01100 JSR NEG32 NEGATE DOUBLE NUMBER 01110 BRA ATONE 01120 ATONY JSR NEG16 NEGATE SINGLE NUMBER 01130 ATONE LDD NUMBER+2 16-BIT BYTES 01140 PSHU A,B 01150 LDD #$FFFF 16-BIT TRUE FLAG 01160 PSHU A,B 01170 LDA TDV GET DOUBLE NUMBER CODE 01180 CMPA #0 IS IT A SINGLE NUMBER? 01190 BEQ ATONF GO IF YES 01200 PULU A,B DISCARD 16-BIT TRUE FLAG 01210 LDD NUMBER GET 32-BIT HIGH BYTES 01220 PSHU A,B 01230 LDD #$FF DOUBLE NUMBER MODIFIED TRUE FLAG 01240 PSHU A,B 01250 BRA ATONF 01260 ERRX LDD #0 FALSE FLAG 01270 PSHU A,B 01280 ATONF PULS A,B 01290 RTS 01300 NUMBER RMB 4 TEMPORARY COMBINED RESULT 01310 TSV RMB 1 TEMPORARY SIGN VARIABLE 01320 TDV RMB 1 TEMPORARY DOUBLE NUMBER VARIABLE 01330 NEG16 PSHS A,B 16-BIT NEGATE ROUTINE 01340 LDD #$FFFF 01350 SUBD NUMBER+2 01360 ADDD #1 01370 STD NUMBER+2 01380 PULS A,B 01390 RTS 01400 NEG32 PSHS A,B 32-BIT NEGATE ROUTINE 01410 JSR NEG16 01420 LDD #$FFFF 01430 SUBD NUMBER 01440 STD NUMBER 01450 LDD NUMBER+2 01460 CMPD #0 WAS NUMBER+2 ORIGINALLY ZERO? 01470 BNE NEG32A GO IF NO 01480 LDD NUMBER 01490 ADDD #1 01500 STD NUMBER 01510 NEG32A PULS A,B 01520 ZEND RTS 01530 END 01530ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÃÄÅ ÁÆÈÈÈÃÉÇÅÆ!ÇÅÅÈ&Á()*Ã,-.ÂÈÄÆÅ4Ç6ÃÅÉÆÄÈÿÿÿÿÿÿÿÿATONCV ASMÿ ûATONW ASMÿ"CURSP ASMÿ#D3216 ASMÿ†DISKOP ASMÿaDCHAR ASMÿ$DS3216 ASMÿ%ÞGPKG ASMÿ'ZGPSET ASMÿèKBDCNT ASMÿjKBDIN ASMÿÜKEYBD ASMÿ+‹M1616 ASMÿýM3208 ASMÿ MS1616 ASMÿ/@NTOACV ASMÿ7OUTPUT ASMÿçPOLCAT ASMÿ0¶SETSCR ASMÿ1SCROLL ASMÿ2·XIC ASMÿ3 XJUMP1 ASMÿ9XJUMP2 ASMÿ5¿XLINE ASMÿ oXPCLS ASMÿ70XPMODE ASMÿ XPPNT ASMÿ8HXPSET ASMÿ9pXSC ASMÿ XSCB ASMÿ:ÒXSCRN ASMÿ;ìÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ00100 ************************* 00110 * 00120 * ATONW.ASM 00130 * MDJ 02-13-91 00140 * 00150 * LAST DIGIT ADJUSTMENT 00160 * ROUTINE FOR ATONCV 00170 * 00180 * IF THE % SIGN IS THE 00190 * LAST DIGIT INPUT IN THE 00200 * DOUBLE NUMBER RECEIVED 00210 * FROM THE INPUT STREAM, 00220 * THIS ROUTINE DIVIDES 00230 * THE TEMPORARY COMBINED 00240 * RESULT BY THE NUMBER 00250 * BASE TO ADJUST FOR THE 00260 * PREVIOUS PREPARATORY 00270 * MULTIPLICATION 00280 * 00290 ************************* 00300 * 00310 ATONX EQU $4527 00320 NUMBER EQU $4564 00330 BASEL EQU $FC 00340 D3216 EQU $437E 00350 DIVDND EQU $CB 00360 DIVSOR EQU $CF 00370 QUOTNT EQU $CB 00380 ORG $478E 00390 ATONW LDD NUMBER MOVE NUMBER TO DIVISION ROUTINE 00400 STD DIVDND 00410 LDD NUMBER+2 00420 STD DIVDND+2 00430 LDD BASEL MOVE NUMBER BASE TO DIVISOR 00440 STD DIVSOR 00450 JSR D3216 GO DIVIDE 00460 LDD QUOTNT MOVE QUOTIENT BACK TO NUMBER 00470 STD NUMBER 00480 LDD QUOTNT+2 00490 STD NUMBER+2 00500 JMP ATONX JUMP BACK INTO ATONCV ROUTINE 00510 ZEND NOP 00520 END FER 00035 TTIB EQU $02DA TIB TERMINATORS 00036 LBP EQU $FA LINE BUFFER POINTER 00037 NTIB EQU $01D9 NUMBER OF CHARACTERS IN TIB 00038 START EQU $7000 DUMMY PROGRAM START LOCATION 00039 ORG $0168 00040 FDB $4788 SET LOADM JUMP TO INIT ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ00001 ************************* 00002 * 00003 * CURSP.ASM 00004 * MDJ 09-25-90 00005 * 00006 * ADVANCES THE CURSOR ONE 00007 * SCREEN POSITION 00008 * 00009 ************************* 00010 * 00011 * U AND S STACKS MUST 00012 * ALREADY BE INITIALIZED 00013 * 00014 * NO ENTRY CONDITIONS 00015 * 00016 * NOTHING RETURNED 00017 * 00018 ************************* 00019 * 00020 XCURS EQU $F3 CURSOR X LOCATION 00021 YCURS EQU $F5 CURSOR Y LOCATION 00022 ADVCOD EQU $F7 ADVANCE CODE 00023 ORG $3F6B 00024 CURSP PSHS A,B,X 00025 LDX XCURS CURSOR X LOCATION 00026 LDB #4 X ADVANCE 00027 ABX 00028 STX XCURS 00029 CMPX #256 END OF LINE? 00030 BLO CURSP1 GO IF NO 00031 LDX #0 00032 STX XCURS RESET CURSOR X LOCATION 00033 LDX YCURS CURSOR Y LOCATION 00034 LDB #8 Y ADVANCE 00035 ABX 00036 STX YCURS 00037 CMPX #192 END OF SCREEN? 00038 BLO CURSP1 GO IF NO 00039 LDX #252 SET CURSOR AT END OF SCREEN 00040 STX XCURS 00041 LDX #184 00042 STX YCURS 00043 LDA #1 00044 STA ADVCOD SET ADVANCE CODE 00045 CURSP1 PULS A,B,X 00046 ZEND RTS 00047 END ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ00001 ************************* 00002 * 00003 * DCHAR.ASM 00004 * MDJ 09-25-90 00005 * 00006 * DISPLAYS A CHARACTER 00007 * 00008 * DOES NOT ADVANCE CURSOR 00009 * 00010 ************************* 00011 * 00012 * REQUIRES: CS64M 00013 * GPKG 00014 * 00015 * ON ENTRY, THE CHARACTER 00016 * NUMBER (8-BIT, ASCII 33 00017 * MINIMUM, ASCII 126 00018 * MAXIMUM) MUST BE ON TOP 00019 * OF THE U-STACK, THE 00020 * X-CURSOR LOCATION MUST 00021 * BE IN XCURS, AND THE 00022 * Y-CURSOR LOCATION MUST 00023 * BE IN YCURS - XCURS & 00024 * YCURS ARE BOTH 16-BIT 00025 * 00026 * NOTHING RETURNED 00027 * 00028 * CHARACTER PRINTED TO 00029 * SCREEN (SETSCR TYPE) 00030 * 00031 ************************* 00032 * 00033 XCURS EQU $F3 CURSOR X LOCATION 00034 YCURS EQU $F5 CURSOR Y LOCATION 00035 CS64M1 EQU $3200 CHARACTER LIST BASE 00036 CS64M2 EQU $325E DOTS LIST BASE 00037 PSET EQU $3E7F SEE GPKG.ASM 00038 ORG $3F00 00039 DCHAR PSHS A,B,X,Y 00040 PULU B CHARACTER NUMBER 00041 SUBB #33 OFFSET 00042 LDX #CS64M1 POINT TO CHARACTERS LIST BASE 00043 ABX POINTER TO NUMBER OF DOTS 00044 LDA ,X GET NUMBER OF DOTS 00045 ASLB TIMES 2 BYTES PER CHARACTER 00046 LDX #CS64M2 POINT TO DOTS LIST BASE 00047 ABX POINT TO DOTS LIST POINTER 00048 LDY ,X START OF DOTS FOR CHARACTER 00049 DCHAR1 CMPA #0 END OF DOTS? 00050 BEQ DCHAR2 GO IF YES 00051 LDX XCURS GET X-CURSOR 00052 LDB ,Y+ OFFSET X AND BUMP Y 00053 ABX ESTABLISH X POINT 00054 PSHS X SAVE X POINT 00055 LDX YCURS GET Y-CURSOR 00056 LDB ,Y+ OFFSET Y AND BUMP Y 00057 ABX ESTABLISH Y POINT 00058 PSHU X PUSH Y POINT TO U-STACK 00059 PULS X RECALL X POINT 00060 PSHU X PUSH X POINT TO U-STACK 00061 JSR PSET GO SET POINT 00062 DECA DECREMENT DOTS POINTER 00063 BRA DCHAR1 RETURN FOR NEXT DOT 00064 DCHAR2 PULS A,B,X,Y 00065 ZEND RTS 00066 END ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ00001 ************************* 00002 * 00003 * DS3216.ASM 00004 * MDJ 09-26-90 00005 * 00006 * 32-BIT BY 16-BIT 00007 * SIGNED INTEGER DIVIDE 00008 * 00009 ************************* 00010 * 00011 * REQUIRES: D3216 00012 * 00013 * ON ENTRY, 32-BIT SIGNED 00014 * DIVIDEND MUST BE IN 00015 * DIVDND AND 16-BIT 00016 * SIGNED DIVISOR MUST BE 00017 * IN DIVSOR 00018 * 00019 * ON EXIT, 32-BIT SIGNED 00020 * QUOTIENT IS IN QUOTNT, 00021 * 16-BIT SIGNED QUOTIENT 00022 * (IF VALID) IS IN Q16, 00023 * AND 16-BIT SIGNED 00024 * MODULUS (REMAINDER) IS 00025 * IN MODLUS 00026 * 00027 ************************* 00028 * 00029 * THIS IS A FLOORED 00030 * DIVISION ROUTINE 00031 * 00032 * REF. 1983 FORTH 00033 * STANDARD FOR DEFINITION 00034 * OF FLOORED DIVISION 00035 * 00036 ************************* 00037 * 00038 D3216 EQU $437E UNSIGNED DIVISION ROUTINE 00039 DIVDND EQU $CB 32-BIT DIVIDEND (SCRATCHPAD) 00040 DIVSOR EQU $CF 16-BIT DIVISOR (SCRATCHPAD) 00041 DIVHLD EQU $D9 TEMPORARY SCRATCH VARIABLE 00042 QUOTNT EQU $CB 32-BIT QUOTIENT (SCRATCHPAD) 00043 MODLUS EQU $CF 16-BIT MODULUS (SCRATCHPAD) 00044 Q16 EQU $CD 16-BIT QUOTIENT (SCRATCHPAD) 00045 ORG $43F6 00046 DS3216 PSHS A,B 00047 LDA DIVSOR 00048 PSHU CC TEMPORARILY STORE SIGN OF MODULUS 00049 EORA DIVDND 00050 PSHU CC TEMPORARILY STORE QUOTIENT SIGN 00051 LDA DIVDND TEST SIGN OF DIVIDEND 00052 BPL DS32A GO IF + 00053 JSR DS32X GET 32-BIT ABSOLUTE VALUE 00054 DS32A LDA DIVSOR TEST DIVISOR SIGN 00055 BPL DS32B GO IF + 00056 JSR DS32Y GET 16-BIT ABSOLUTE VALUE 00057 DS32B LDD DIVSOR 00058 STD DIVHLD TEMPORARILY STORE DIVISOR 00059 PULS A,B 00060 JSR D3216 GO DO UNSIGNED DIVIDE 00061 PSHS A,B 00062 PULU CC GET SIGN OF QUOTIENT 00063 BPL DS32C GO IF + 00064 JSR DS32F FLOOR QUOTIENT 00065 JSR DS32X NEGATE QUOTIENT 00066 LDD MODLUS ADJUST MODULUS 00067 SUBD DIVHLD 00068 STD MODLUS 00069 PULU CC GET SIGN OF MODULUS 00070 BMI DS32D GO IF MINUS 00071 JSR DS32Y NEGATE MODULUS 00072 BRA DS32D 00073 DS32C PULU CC GET SIGN OF MODULUS 00074 BPL DS32D GO IF + 00075 JSR DS32Y NEGATE MODULUS 00076 DS32D PULS A,B 00077 RTS 00078 DS32X COM QUOTNT 32-BIT NEGATE ROUTINE 00079 COM QUOTNT+1 00080 COM QUOTNT+2 00081 COM QUOTNT+3 00082 DS32F LDD QUOTNT+2 QUOTIENT FLOORING ENTRY POINT 00083 ADDD #1 00084 STD QUOTNT+2 00085 LDA QUOTNT+1 00086 ADCA #0 00087 STA QUOTNT+1 00088 LDA QUOTNT 00089 ADCA #0 00090 STA QUOTNT 00091 RTS 00092 DS32Y LDD #0 16-BIT NEGATE ROUTINE 00093 SUBD MODLUS 00094 STD MODLUS 00095 ZEND RTS 00096 END ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ00001 ************************* 00002 * 00003 * GPKG.ASM 00004 * MDJ 09-25-90 00005 * REV 04-45-91 00006 * 00007 * GRAPHICS CONTROL 00008 * PACKAGE 00009 * 00010 ************************* 00011 * 00012 * REQUIRES: XSC 00013 * XSCB 00014 * XSCRN 00015 * XPMODE 00016 * XPCLS 00017 * XPPNT 00018 * XPSET 00019 * XLINE 00020 * XIC 00021 * GPSET 00022 * 00023 ************************* 00024 * 00025 GRPRAM EQU $BC START OF GRAPHICS RAM 00026 HORBEG EQU $BD X - STARTING POINT 00027 HOREND EQU $C3 X - ENDING POINT 00028 SETFLG EQU $C2 PSET/PRESET FLAG 00029 TXTTAB EQU $19 START OF BASIC PROGRAM 00030 VERBEG EQU $BF Y - STARTING POINT 00031 VEREND EQU $C5 Y - ENDING POINT 00032 XIC EQU $3D5B INTEGER CONVERSION ROUTINE 00033 XLINE EQU $3C50 LINE ROUTINE 00034 XPAGE EQU $3BAB PAGE ROUTINE 00035 XPCLS EQU $3BDC PCLS ROUTINE 00036 XPCLSS EQU $3BD2 PCLS TO SPECIFIED COLOR ROUTINE 00037 XPMODE EQU $3B7E PMODE ROUTINE 00038 XPPNT EQU $3BEA PPOINT ROUTINE 00039 XPSET EQU $3C2B PSET ROUTINE 00040 XSC EQU $3B12 SET COLOR ROUTINE 00041 XSCB EQU $3B24 SET COLOR BYTES ROUTINE 00042 XSCRN EQU $3B34 SET SCREEN ROUTINE 00043 FORCOL EQU $B2 00044 GPSET EQU $47BA 00045 GLINE EQU $47D8 00046 GPSETS EQU $47AD 00047 GPCLSS EQU $47EC 00048 ORG $3E26 00049 * 00050 ************************* 00051 * 00052 * SETUP INITIALIZES THE 00053 * PSET/PRESET FLAG AND 00054 * RUNS XSCB 00055 * 00056 * SETUP MUST BE RUN JUST 00057 * AFTER INITIAL PMODE, 00058 * PCLS, & SCREEN AT THE 00059 * BEGINNING OF A PROGRAM 00060 * - IT IS NOT NEEDED 00061 * OTHERWISE 00062 * 00063 * NO ENTRY CONDITIONS 00064 * 00065 * NOTHING RETURNED 00066 * 00067 ************************* 00068 * 00069 SETUP PSHS A,B 00070 LDA #1 00071 STA SETFLG PSET/PRESET FLAG 00072 JSR XSCB SET COLOR BYTES ROUTINE 00073 PULS A,B 00074 RTS 00075 * 00076 ************************* 00077 * 00078 * PMODE SETS THE GRAPHICS 00079 * MODE ARGUMENT 00080 * 00081 * ON ENTRY, THE PMODE # 00082 * (8-BIT, 0-4) MUST BE ON 00083 * THE TOP OF THE U-STACK 00084 * AND THE GRAPHICS PAGE # 00085 * (8-BIT, 1-8) MUST BE ON 00086 * THE U-STACK IMMEDIATELY 00087 * BELOW IT 00088 * 00089 * NOTHING RETURNED 00090 * 00091 ************************* 00092 * 00093 PMODE PSHS B 00094 PULU B PMODE # 00095 PSHS U 00096 JSR XPMODE PMODE ROUTINE 00097 PULS U 00098 PULU B GRAPHICS PAGE # 00099 JSR XPAGE PAGE ROUTINE 00100 PULS B 00101 RTS 00102 * 00103 ************************* 00104 * 00105 * PAGE SETS THE GRAPHICS 00106 * PAGE NUMBER 00107 * 00108 * ON ENTRY, THE GRAPHICS 00109 * PAGE # (8-BIT, 1-8) 00110 * MUST BE ON THE TOP OF 00111 * THE U-STACK 00112 * 00113 * NOTHING RETURNED 00114 * 00115 ************************* 00116 * 00117 PAGE PSHS B 00118 PULU B GRAPHICS PAGE NUMBER 00119 JSR XPAGE PAGE ROUTINE 00120 PULS B 00121 RTS 00122 * 00123 ************************* 00124 * 00125 * PCLS CLEARS THE SCREEN 00126 * TO THE BACKGROUND COLOR 00127 * 00128 * NO ENTRY CONDITIONS 00129 * 00130 * NOTHING RETURNED 00131 * 00132 ************************* 00133 * 00134 PCLS PSHS A,B,X 00135 JSR XPCLS PCLS ROUTINE 00136 PULS A,B,X 00137 RTS 00138 * 00139 ************************* 00140 * 00141 * PCLSS CLEARS THE SCREEN 00142 * TO A SPECIFIED COLOR 00143 * 00144 * ON ENTRY, THE COLOR 00145 * (16-BIT,1-8) MUST BE ON 00146 * TOP OF THE U-STACK 00147 * 00148 * NOTHING RETURNED 00149 * 00150 ************************* 00151 * 00152 PCLSS PSHS A,B,X 00153 JSR GPCLSS 00154 PULS A,B,X 00155 RTS 00156 * 00157 ************************* 00158 * 00159 * SCREEN SETS-UP THE 00160 * GRAPHICS SCREEN 00161 * 00162 * UNLIKE BASIC, THE 00163 * SCREEN CODE IS ALWAYS 00164 * 1 - THERE IS NO TEXT 00165 * MODE FOR THE SCREEN - 00166 * TEXT IS DONE IN PMODE 4 00167 * 00168 * ON ENTRY, THE COLOR SET 00169 * # (8-BIT, 0 OR 1) MUST 00170 * BE ON THE TOP OF THE 00171 * U-STACK 00172 * 00173 * NOTHING RETURNED 00174 * 00175 ************************* 00176 * 00177 SCREEN PSHS A,B 00178 JSR XSCRN SET SCREEN ROUTINE 00179 PULU B COLOR SET NUMBER 00180 JSR XSC SET COLOR ROUTINE 00181 PULS A,B 00182 RTS 00183 * 00184 ************************* 00185 * 00186 * PCLEAR SETS THE NUMBER 00187 * OF GRAPHIC PAGES NEEDED 00188 * 00189 * UNLIKE BASIC, PCLEAR 00190 * CANNOT BE CHANGED FROM 00191 * 4 - THIS ROUTINE USED 00192 * BY SETSCR.ASM ONLY 00193 * 00194 * NOTHING RETURNED 00195 * 00196 ************************* 00197 * 00198 PCLEAR PSHS A,B 00199 PULU B # OF GRAPHIC PAGES NEEDED 00200 LDA #6 6 X 256 PER PAGE 00201 MUL 00202 ADDB GRPRAM START OF GRAPHICS RAM 00203 STB TXTTAB START OF BASIC PROGRAM 00204 PULS A,B 00205 RTS 00206 * 00207 ************************* 00208 * 00209 * PRESET RESETS A POINT 00210 * TO THE BACKGROUND COLOR 00211 * 00212 * PSET SETS A POINT TO 00213 * THE FOREGROUND COLOR 00214 * 00215 * PSETS SETS A POINT TO 00216 * A SPECIFIED COLOR 00217 * 00218 * ON ENTRY FOR PRESET & 00219 * PSET, THE X-COORDINATE 00220 * (16-BIT) MUST BE ON THE 00221 * TOP OF THE U-STACK AND 00222 * THE Y-COORDINATE 00223 * (16-BIT) MUST BE ON THE 00224 * U-STACK IMMEDIATELY 00225 * BELOW IT 00226 * 00227 * ON ENTRY FOR PSETS, THE 00228 * COLOR NUMBER 00229 * (16-BIT,0-8) MUST BE ON 00230 * THE TOP OF THE U-STACK, 00231 * THE X-COORDINATE MUST 00232 * BE ON THE U-STACK 00233 * IMMEDIATELY BELOW IT, 00234 * AND THE Y-COORDINATE 00235 * MUST BE ON THE U-STACK 00236 * IMMEDIATELY BELOW THAT 00237 * 00238 * FOR PRESET, PSET, AND 00239 * PSETS, NOTHING RETURNED 00240 * 00241 ************************* 00242 * 00243 PRESET PSHS A,B 00244 CLRA USE BACKGROUND COLOR 00245 BRA PGO 00246 PSET PSHS A,B 00247 LDA #1 USE FOREGROUND COLOR 00248 BRA PGO 00249 PSETS PSHS A,B 00250 PULU A,B GET COLOR NUMBER 00251 LDA FORCOL LOAD CURRENT COLOR NUMBER 00252 STB FORCOL SET TEMPORARY COLOR NUMBER 00253 JMP GPSETS 00254 PGO JSR GPSET 00255 PULS A,B 00256 RTS 00257 ORG $3E9C 00258 * 00259 ************************* 00260 * 00261 * PPOINT TESTS A GRAPHICS 00262 * POINT AND RETURNS ITS 00263 * COLOR NUMBER 00264 * 00265 * ON ENTRY, THE POINT'S 00266 * X-COORDINATE (16-BIT) 00267 * MUST BE ON THE TOP OF 00268 * THE U-STACK AND THE 00269 * Y-COORDINATE (16-BIT) 00270 * MUST BE ON THE U-STACK 00271 * IMMEDIATELY BELOW IT 00272 * 00273 * ON RETURN, THE POINT'S 00274 * COLOR # (16-BIT, 0-8) 00275 * IS ON THE TOP OF THE 00276 * U-STACK 00277 * 00278 ************************* 00279 PPOINT PSHS A,B,X,Y 00280 PULU X X-COORDINATE 00281 STX HORBEG X - STARTING POINT 00282 PULU X Y-COORDINATE 00283 STX VERBEG Y - STARTING POINT 00284 PSHS U 00285 JSR XPPNT PPOINT ROUTINE 00286 PULS U 00287 JSR XIC INTEGER CONVERSION ROUTINE 00288 PSHU A,B 16-BIT COLOR NUMBER 00289 PULS A,B,X,Y 00290 RTS 00291 * 00292 ************************* 00293 * 00294 * LINE DRAWS A GRAPHICS 00295 * LINE BETWEEN TWO POINTS 00296 * 00297 * ON ENTRY, THE U-STACK, 00298 * FROM TOP DOWN, MUST 00299 * HAVE THE FOLLOWING FOUR 00300 * 16-BIT VALUES: 00301 * 00302 * STARTING X-COORDINATE 00303 * STARTING Y-COORDINATE 00304 * ENDING X-COORDINATE 00305 * ENDING Y-COORDINATE 00306 * 00307 * NOTHING RETURNED 00308 * 00309 ************************* 00310 * 00311 LINE PSHS A,B 00312 PULU A,B 00313 STD HORBEG HORIZONTAL BEGIN COORDINATE 00314 PULU A,B 00315 STD VERBEG VERTICAL BEGIN COORDINATE 00316 PULU A,B 00317 STD HOREND HORIZONTAL END COORDINATE 00318 PULU A,B 00319 STD VEREND VERTICAL END COORDINATE 00320 JSR GLINE 00321 PULS A,B 00322 ZEND RTS 00323 END B 03115 ZEND RTS 03120 END RTS 03120 END ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ00001 ************************* 00002 * 00003 * KEYBD.ASM 00004 * MDJ 09-25-90 00005 * 00006 * WAITS FOR A KEYPRESS OR 00007 * KEYPRESS COMBINATION & 00008 * LEAVES THE TRANSLATED 00009 * KEYCODE (8-BIT, 0-255) 00010 * ON THE U-STACK 00011 * 00012 ************************* 00013 * 00014 * U AND S STACKS MUST 00015 * ALREADY BE INITIALIZED 00016 * 00017 * NO ENTRY CONDITIONS 00018 * 00019 * ON RETURN, THE KEYCODE 00020 * IS ON THE TOP OF THE 00021 * U-STACK 00022 * 00023 ************************* 00024 * 00025 XCURS EQU $F3 CURSOR X LOCATION 00026 YCURS EQU $F5 CURSOR Y LOCATION 00027 POLCAT EQU $3F9B KEYBOARD POLLING ROUTINE 00028 PPOINT EQU $3E9C SEE GPKG.ASM 00029 PRESET EQU $3E7A SEE GPKG.ASM 00030 PSET EQU $3E7F SEE GPKG.ASM 00031 ORG $3FAA 00032 KEYBD PSHS A,X ENTRY POINT TO BLINK CURSOR AND 00033 * GET A KEYPRESS 00034 LDX #GETKEY 00035 BRA KBS 00036 KBNC PSHS A,X ENTRY POINT TO GET A KEYPRESS 00037 * WITHOUT BLINKING THE CURSOR 00038 LDX #GKNC 00039 KBS JSR ,X GO GET KEYPRESS 00040 PULU A PULL RAW KEYCODE 00041 CMPA #1 COCO III SH-CTRL KEY? 00042 BEQ KBS IGNORE IF YES 00043 CMPA #4 COCO III F2 KEY? 00044 BEQ KBS IGNORE IF YES 00045 CMPA #12 CLEAR KEY? 00046 BEQ KCLR GO IF YES 00047 CMPA #19 SHIFT @ KEY? 00048 BEQ KSHAT GO IF YES 00049 CMPA #91 SHIFT DOWN ARROW KEY? 00050 BEQ KSHDN GO IF YES 00051 CMPA #92 SHIFT CLEAR KEY? 00052 BEQ KSHCLR GO IF YES 00053 CMPA #93 SHIFT RIGHT ARROW KEY? 00054 BEQ KSHRA GO IF YES 00055 CMPA #94 ^ KEY? 00056 BEQ KUP GO IF YES 00057 CMPA #95 SHIFT ^ KEY? 00058 BEQ KSHUP GO IF YES 00059 CMPA #122 COCO III CTRL OR SH-F2 KEY? 00060 BHI KBS IGNORE IF YES 00061 LBRA KEXIT EXIT 00062 KSHAT LDA #95 SH-@ TRANSLATION 00063 LBRA KEXIT 00064 KSHDN LDA #23 SHIFT DOWN ARROW TRANSLATION 00065 LBRA KEXIT 00066 KSHCLR LDA #124 SH-CLEAR TRANSLATION 00067 LBRA KEXIT 00068 KSHRA LDA #22 SHIFT RIGHT ARROW TRANSLATION 00069 LBRA KEXIT 00070 KUP LDA #11 ^ TRANSLATION 00071 LBRA KEXIT 00072 KSHUP LDA #24 SH-^ TRANSLATION 00073 LBRA KEXIT 00074 KCLR JSR ,X CLEAR KEY COMBINATION 00075 PULU A 00076 CMPA #3 BREAK KEY? 00077 BLO KCLR IGNORE IF COCO III SH-CTRL KEY 00078 BEQ KCBRK GO IF BREAK KEY 00079 CMPA #8 LEFT ARROW KEY? 00080 BLO KCLR IGNORE IF COCO III F2 KEY 00081 BEQ KCLA GO IF LEFT ARROW KEY 00082 CMPA #12 CLEAR KEY? 00083 BLO KCLA GO IF RIGHT ARROW OR DOWN ARROW 00084 BEQ KCLR IGNORE IF SECOND CLEAR KEY 00085 CMPA #13 ENTER KEY? 00086 BEQ KCENT GO IF YES 00087 CMPA #32 SPACEBAR? 00088 BLO KCLR IGNORE IF LESS THAN ASCII 32 00089 BEQ KCSPA GO IF SPACEBAR 00090 CMPA #42 SH-* KEY? 00091 BLO KC95 GO IF LESS THAN ASCII 42 00092 BEQ KCASTK GO IF SH-* KEY 00093 CMPA #43 SH + KEY? 00094 BEQ KCPLUS GO IF YES 00095 CMPA #44 , KEY? 00096 BEQ KCCOM GO IF YES 00097 CMPA #45 - (MINUS) KEY? 00098 BEQ KCMIN GO IF YES 00099 CMPA #46 . KEY? 00100 BEQ KCPER GO IF YES 00101 CMPA #47 / KEY? 00102 BEQ KCSLSH GO IF YES 00103 CMPA #55 7 KEY? 00104 BLO KC95 GO IF LESS THAN ASCII 55 00105 BEQ KC7 GO IF 7 KEY 00106 CMPA #56 8 KEY? 00107 BEQ KC8 GO IF YES 00108 CMPA #57 9 KEY? 00109 BEQ KC9 GO IF YES 00110 CMPA #58 : KEY? 00111 BEQ KCCOLN GO IF YES 00112 CMPA #64 @ KEY? 00113 BLO KC95 GO IF LESS THAN ASCII 64 00114 BEQ KAT GO IF @ KEY 00115 CMPA #91 SHIFT DOWN ARROW KEY? 00116 BLO KC95 GO IF LESS THAN ASCII 91 00117 CMPA #94 ^ KEY? 00118 BLO KCLR IGNORE IF LESS THAN ASCII 94 00119 BEQ KCUP GO IF ^ KEY 00120 CMPA #95 SH-^ KEY? 00121 BEQ KCLR IGNORE IF YES 00122 CMPA #122 COCO III CTRL OR SH-F2 KEY? 00123 BHI KCLR IGNORE IF YES 00124 KC95 ADDA #95 ALPHA-CLEAR OFFSET 00125 LBRA KEXIT 00126 KCBRK LDA #12 BREAK TRANSLATION 00127 LBRA KEXIT 00128 KCLA SUBA #4 LEFT ARROW, RIGHT ARROW, AND DOWN 00129 * ARROW TRANSLATION 00130 LBRA KEXIT 00131 KCENT LDA #2 ENTER TRANSLATION 00132 LBRA KEXIT 00133 KCSPA LDA #1 SPACEBAR TRANSLATION 00134 LBRA KEXIT 00135 KCASTK LDA #126 ASTERISK TRANSLATION 00136 LBRA KEXIT 00137 KCPLUS LDA #138 + TRANSLATION 00138 LBRA KEXIT 00139 KCCOM LDA #123 , TRANSLATION 00140 LBRA KEXIT 00141 KCMIN LDA #127 - (MINUS) TRANSLATION 00142 LBRA KEXIT 00143 KCPER LDA #125 . TRANSLATION 00144 LBRA KEXIT 00145 KCSLSH LDA #92 / TRANSLATION 00146 LBRA KEXIT 00147 KC7 LDA #96 7 KEY TRANSLATION 00148 LBRA KEXIT 00149 KC8 LDA #91 8 KEY TRANSLATION 00150 LBRA KEXIT 00151 KC9 LDA #93 9 KEY TRANSLATION 00152 LBRA KEXIT 00153 KCCOLN LDA #94 : TRANSLATION 00154 LBRA KEXIT 00155 KCUP LDA #7 ^ TRANSLATION 00156 LBRA KEXIT 00157 KAT JSR ,X CLEAR-@ KEYS COMBINATION 00158 PULU A 00159 CMPA #33 ! KEY? 00160 BLO KAT IGNORE IF LESS THAN ASCII 33 00161 CMPA #38 & KEY? 00162 BLO KA218 GO IF LESS THAN ASCII 38 00163 CMPA #43 + KEY? 00164 BEQ KAPLUS GO IF YES 00165 CMPA #44 , KEY? 00166 BEQ KACOM GO IF YES 00167 CMPA #48 0 KEY? 00168 BLO KAT IGNORE IF LESS THAN ASCII 48 00169 BEQ KA0 GO IF 0 KEY 00170 CMPA #56 8 KEY? 00171 BLO KA35 GO IF LESS THAN ASCII 56 00172 BEQ KA31 GO IF 8 KEY 00173 CMPA #57 9 KEY? 00174 BEQ KA31 GO IF YES 00175 CMPA #65 A KEY? 00176 BLO KAT IGNORE IF LESS THAN ASCII 65 00177 CMPA #91 SHIFT DOWN ARROW KEY? 00178 BLO KA153 GO IF LESS THAN ASCII 91 00179 CMPA #97 a KEY? 00180 BLO KAT IGNORE IF LESS THAN ASCII 97 00181 CMPA #102 f KEY? 00182 BLO KA70 GO IF LESS THAN ASCII 102 00183 CMPA #106 j KEY? 00184 BLO KA37 GO IF LESS THAN ASCII 106 00185 CMPA #110 n KEY? 00186 BLO KA44 GO IF LESS THAN ASCII 110 00187 CMPA #116 t KEY? 00188 BLO KA76 GO IF LESS THAN ASCII 116 00189 CMPA #122 COCO III CTRL OR SH-F2 KEY? 00190 BHI KAT IGNORE IF YES 00191 KA128 ADDA #128 +128 OFFSET 00192 BRA KEXIT 00193 KA218 ADDA #218 +218 OFFSET 00194 BRA KEXIT 00195 KAPLUS LDA #137 + TRANSLATION 00196 BRA KEXIT 00197 KACOM LDA #159 , TRANSLATION 00198 BRA KEXIT 00199 KA0 CLRA O KEY TRANSLATION 00200 BRA KEXIT 00201 KA35 SUBA #35 -35 OFFSET 00202 BRA KEXIT 00203 KA31 SUBA #31 -31 OFFSET 00204 BRA KEXIT 00205 KA153 ADDA #153 +153 OFFSET 00206 BRA KEXIT 00207 KA70 SUBA #70 -70 OFFSET 00208 BRA KEXIT 00209 KA37 ADDA #37 +37 OFFSET 00210 BRA KEXIT 00211 KA44 ADDA #44 +44 OFFSET 00212 BRA KEXIT 00213 KA76 ADDA #76 +76 OFFSET 00214 KEXIT PSHU A PUSH FINAL KEYCODE 00215 PULS A,X 00216 RTS 00217 GETKEY PSHS X BLINK CURSOR & GET KEY 00218 PSHS A,B,Y,U,DP,CC 00219 TFR U,X 00220 WAIT JSR POLCAT 00221 PSHS CC 00222 JSR BLCURS GO BLINK CURSOR 00223 PULS CC 00224 BEQ WAIT 00225 BRA GKNCE 00226 GKNC PSHS X GET KEY W/O BLINKING CURSOR 00227 PSHS A,B,Y,U,DP,CC 00228 TFR U,X 00229 WAITNC JSR POLCAT 00230 BEQ WAITNC 00231 GKNCE LEAX -1,X PSHU A EQUIVALENT 00232 STA ,X 00233 PULS A,B,Y,U,DP,CC 00234 TFR X,U 00235 PULS X 00236 RTS 00237 BLCURS PSHS A,B,X,Y CURSOR BLINK ROUTINE 00238 JSR BLCUR1 00239 JSR BLCUR1 00240 PULS A,B,X,Y 00241 RTS 00242 BLCUR1 LDB #7 00243 LDX YCURS CURSOR Y LOCATION 00244 ABX 00245 TFR X,Y 00246 BC1 LDB #2 00247 LDX XCURS CURSOR X LOCATION 00248 ABX 00249 BC2 PSHU Y 00250 PSHU X 00251 JSR PPOINT 00252 PULU A,B 00253 CMPD #0 00254 BEQ BLC1 00255 PSHU Y 00256 PSHU X 00257 JSR PSET 00258 BRA BLC2 00259 BLC1 PSHU Y 00260 PSHU X 00261 JSR PRESET 00262 BLC2 CMPX XCURS CURSOR X LOCATION 00263 BEQ ZEND 00264 LEAX -1,X 00265 BRA BC2 00266 ZEND RTS 00267 END ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ00001 ************************* 00002 * 00003 * MS1616.ASM 00004 * MDJ 09-26-90 00005 * 00006 * 16-BIT BY 16-BIT 00007 * SIGNED INTEGER MULTIPLY 00008 * 00009 ************************* 00010 * 00011 * REQUIRES: M1616 00012 * 00013 * ON ENTRY, SIGNED 16-BIT 00014 * MULTIPLICAND #1 MUST BE 00015 * IN MLTIC1 AND SIGNED 00016 * 16-BIT MULTIPLICAND #2 00017 * MUST BE IN MLTIC2 00018 * 00019 * ON RETURN, 32-BIT 00020 * SIGNED RESULT IS IN 00021 * RESULT AND 16-BIT 00022 * SIGNED RESULT (IF 00023 * VALID) IS IN RS16 00024 * 00025 ************************* 00026 * 00027 M1616 EQU $4327 UNSIGNED MULTIPLY ROUTINE 00028 MLTIC1 EQU $CB MULTIPLICAND #1 (SCRATCHPAD) 00029 MLTIC2 EQU $CD MULTIPLICAND #2 (SCRATCHPAD) 00030 RESULT EQU $CF 32-BIT RESULT (SCRATCHPAD) 00031 R16 EQU $D1 SCRATCH INTERNAL UNSIGNED 16-BIT 00032 RS16 EQU $D9 16-BIT RESULT (SCRATCHPAD) 00033 ORG $43A8 00034 MS1616 PSHS A,B 00035 LDA MLTIC1 MLTIC1 HIGH BYTE 00036 EORA MLTIC2 EORA MLTIC2 HIGH BYTE 00037 PSHS CC SAVE RESULT SIGN 00038 LDD MLTIC1 TEST SIGN OF MLTIC1 00039 BPL MS16A GO IF + 00040 LDD #0 00041 SUBD MLTIC1 ABSOLUTE VALUE 00042 STD MLTIC1 REPLACE 00043 MS16A LDD MLTIC2 TEST SIGN OF MLTIC2 00044 BPL MS16B GO IF + 00045 LDD #0 00046 SUBD MLTIC2 ABSOLUTE VALUE 00047 STD MLTIC2 REPLACE 00048 MS16B JSR M1616 DO UNSIGNED MULTIPLY 00049 LDD R16 16-BIT UNSIGNED RESULT 00050 STD RS16 SAVE TO SIGNED LOCATION 00051 PULS CC GET RESULT SIGN 00052 BPL MS16C GO IF POSITIVE RESULT 00053 LDD #0 00054 SUBD RS16 NEGATE 16-BIT RESULT 00055 STD RS16 REPLACE 00056 COM RESULT NEGATE 32-BIT RESULT 00057 COM RESULT+1 00058 COM RESULT+2 00059 COM RESULT+3 00060 LDD RESULT+2 00061 ADDD #1 00062 STD RESULT+2 00063 LDA RESULT+1 00064 ADCA #0 00065 STA RESULT+1 00066 LDA RESULT 00067 ADCA #0 00068 STA RESULT 00069 MS16C PULS A,B 00070 ZEND RTS 00071 END ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ00001 ************************* 00002 * 00003 * POLCAT.ASM 00004 * MDJ 09-25-90 00005 * 00006 * POLLS THE KEYBOARD FOR 00007 * A KEYSTROKE 00008 * 00009 ************************* 00010 * 00011 * U AND S STACKS MUST 00012 * ALREADY BE INITIALIZED 00013 * 00014 * NO ENTRY CONDITIONS 00015 * 00016 * ON RETURN: 00017 * IF NO KEY PRESSED - 00018 * CC FLAG Z = 1 00019 * REGISTER A = 0 00020 * IF A KEY WAS PRESSED - 00021 * CC FLAG Z = 0 00022 * REGISTER A = KEY 00023 * 00024 * ANY ROUTINE CALLING 00025 * THIS MUST PSHS A,CC 00026 * BEFORE CALLING AND 00027 * PULS A,CC ON RETURN 00028 * 00029 ************************* 00030 * 00031 RAMROM EQU $FFDE RAM/ROM MODE 00032 ALLRAM EQU $FFDF ALL RAM MODE 00033 XPOLCT EQU $A000 ROM POLCAT JUMP ADDRESS 00034 ORG $3F9B 00035 POLCAT PSHS Y,U,DP 00036 STA RAMROM SET RAM/ROM MODE 00037 JSR [XPOLCT] GO TO ROM POLCAT 00038 STA ALLRAM SET ALL RAM MODE 00039 PULS Y,U,DP 00040 ZEND RTS 00041 END ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ00001 ************************* 00002 * 00003 * SETSCR.ASM 00004 * MDJ 09-25-90 00005 * 00006 * SETS UP STANDARD SCREEN 00007 * WHICH IS GENERALLY USED 00008 * AT THE BEGINNING OF ALL 00009 * PROGRAMS 00010 * 00011 * REVERSED PMODE 4 SCREEN 00012 * USING PSET (NOT PRESET) 00013 * 00014 ************************* 00015 * 00016 * THIS SEQUENCE IDENTICAL 00017 * TO BASIC'S: 00018 * 00019 * 10PCLEAR4 00020 * 20PMODE4,1 00021 * 30POKE&HB2,0 00022 * 40POKE&HB3,3 00023 * 50POKE&HB4,0 00024 * 60PCLS 00025 * 70SCREEN1,1 00026 * 00027 ************************* 00028 FORCOL EQU $B2 FOREGROUND COLOR 00029 BAKCOL EQU $B3 BACKGROUND COLOR 00030 WCOLOR EQU $B4 WORKING COLOR 00031 PCLEAR EQU $3E6C SEE GPKG.ASM 00032 PMODE EQU $3E32 SEE GPKG.ASM 00033 PCLS EQU $3E4F SEE GPKG.ASM 00034 SCREEN EQU $3E5F SEE GPKG.ASM 00035 SETUP EQU $3E26 SEE GPKG.ASM 00036 ORG $3ED4 00037 SETSCR PSHS A,B 00038 LDB #4 00039 PSHU B 00040 JSR PCLEAR PCLEAR4 00041 LDA #4 00042 LDB #1 00043 PSHU A,B 00044 JSR PMODE PMODE4,1 00045 LDA #0 00046 STA FORCOL POKE&HB2,0 00047 LDB #3 00048 STB BAKCOL POKE&HB3,3 00049 STA WCOLOR POKE&HB4,0 00050 JSR PCLS PCLS 00051 LDB #1 00052 PSHU B 00053 JSR SCREEN SCREEN1,1 00054 JSR SETUP GO SET-UP SCREEN 00055 PULS A,B 00056 ZEND RTS 00057 END ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ00001 ************************* 00002 * 00003 * SCROLL.ASM 00004 * MDJ 09-25-90 00005 * 00006 * SCROLLS THE SCREEN UP 00007 * ONE TEXT LINE & LEAVES 00008 * THE CURSOR AT THE LEFT 00009 * END (START) OF THE 00010 * BOTTOM LINE - RESETS 00011 * THE ADVANCE CODE 00012 * 00013 ************************* 00014 * 00015 * U AND S STACKS MUST 00016 * ALREADY BE INITIALIZED 00017 * 00018 * NO ENTRY CONDITIONS 00019 * 00020 * ON RETURN, ADVANCE CODE 00021 * IS RESET TO ZERO 00022 * 00023 ************************* 00024 * 00025 BEGGRP EQU $BA START OF CURRENT GRAPHICS PAGE 00026 XCURS EQU $F3 CURSOR X LOCATION 00027 YCURS EQU $F5 CURSOR Y LOCATION 00028 ADVCOD EQU $F7 ADVANCE CODE 00029 ORG $3F33 00030 SCROLL PSHS A,B,X,Y,U 00031 LDD BEGGRP GET START OF PAGE 00032 TFR D,X 00033 ADDD #256 00034 TFR D,Y 00035 LDU #5888 00036 SCROL1 LDA ,Y+ 00037 STA ,X+ 00038 LEAU -1,U 00039 CMPU #0 00040 BNE SCROL1 00041 LDU #256 00042 LDA #$FF 00043 SCROL2 STA ,X+ 00044 LEAU -1,U 00045 CMPU #0 00046 BNE SCROL2 00047 LDX #0 00048 STX XCURS NEW CURSOR X LOCATION 00049 LDX #184 00050 STX YCURS NEW CURSOR Y LOCATION 00051 CLR ADVCOD RESET ADVANCE CODE 00052 PULS A,B,X,Y,U 00053 ZEND RTS 00054 END ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ00001 ************************* 00002 * 00003 * XIC.ASM 00004 * MDJ 09-24-90 00005 * 00006 * CONVERTS A FLOATING 00007 * POINT NUMBER TO A 00008 * TWO-BYTE SIGNED INTEGER 00009 * 00010 ************************* 00011 * 00012 * U AND S STACKS MUST 00013 * ALREADY BE INITIALIZED 00014 * 00015 * MUST BE ENTERED WITH 00016 * FLOATING POINT NUMBER 00017 * IN FPA0 00018 * 00019 * RETURNS SIGNED INTEGER 00020 * IN REGISTER D 00021 * 00022 ************************* 00023 * 00024 * REF. PAGE A64 AND 00025 * SURROUNDING PAGES 00026 * COLOR BASIC UNRAVELLED 00027 * 00028 ************************* 00029 * 00030 FPA0 EQU $50 FLOATING POINT ACCUM. #0 MANTISSA 00031 FP0EXP EQU $4F FLOATING POINT ACCUM. #0 EXPONENT 00032 FP0SGN EQU $54 FLOATING POINT ACCUM. #0 SIGN 00033 FPSBYT EQU $63 FLOATING POINT SUB-BYTE 00034 FPCARY EQU $5B FLOATING POINT CARRY BYTE 00035 VALTYP EQU 6 TYPE FLAG 00036 ORG $3D5B 00037 XIC ANDCC #$FE CLEAR CARRY FLAG 00038 FCB $7D OP CODE OF TST - SKIP TWO BYTES 00039 ORCC #1 SET CARRY 00040 TST VALTYP TEST TYPE FLAG 00041 BCS XIC2 GO IF STRING 00042 BPL XIC2 GO ON PLUS 00043 FCB $8C SKIP TWO BYTES 00044 XIC2 LDA FP0EXP GET FPA0 EXPONENT 00045 CMPA #$90 00046 BCS XIC3 GO IF FPA0 < 32768 00047 JSR XIC4 00048 XIC3 JSR XIC6 00049 LDD FPA0+2 GET THE INTEGER 00050 RTS 00051 XIC4 LDB ,X CHECK EXPONENT 00052 BEQ XICA GO IF FPA=0 00053 LDB 1,X GET MSB OF MANTISSA 00054 EORB FP0SGN EOR WITH SIGN OF FPA0 00055 BMI XICB GO IF SIGNS NOT EQUAL 00056 LDB FP0EXP GET EXPONENT 00057 CMPB ,X IS IT = X 00058 BNE XIC5 GO IF NO 00059 LDB 1,X GET MSB 00060 ORB #$7F THE SIGN BIT AND THE BOTTOM 7 00061 ANDB FPA0 BITS OF FPA0 INTO ACCB 00062 CMPB 1,X BOTTOM 7 BITS = MSB? 00063 BNE XIC5 GO IF NO 00064 LDB FPA0+1 GET SECOND BYTE 00065 CMPB 2,X EQUAL? 00066 BNE XIC5 GO IF NO 00067 LDB FPA0+2 GET THIRD BYTE 00068 CMPB 3,X EQUAL? 00069 BNE XIC5 GO IF NO 00070 LDB FPA0+3 GET LSB 00071 SUBB 4,X SUBTRACT LSB OF X 00072 BNE XIC5 GO IF NOT = 0 00073 RTS 00074 XIC5 RORB SHIFT CARRY TO BIT 7 00075 EORB FP0SGN TOGGLE IF FPA0 IS NEGATIVE 00076 BRA XICC GO SET ACCB 00077 XIC6 LDB FP0EXP GET EXPONENT 00078 BEQ XIC9 ZERO MANTISSA IF FPA0=0 00079 SUBB #$A0 GET NUMBER OF SHIFTS REQUIRED 00080 LDA FP0SGN TEST SIGN 00081 BPL XIC7 GO IF POSITIVE 00082 COM FPCARY COMPLEMENT THE CARRY 00083 JSR XICE NEGATE MANTISSA OF FPA0 00084 XIC7 LDX #FP0EXP POINT X TO FPA0 00085 CMPB #$F8 EXPONENT DIFFERENCE < -8? 00086 BGT XIC8 GO IF YES 00087 JSR XICH SHIFT FPA0 RIGHT 00088 CLR FPCARY CLEAR THE CARRY BYTE 00089 RTS 00090 XIC8 CLR FPCARY 00091 LDA FP0SGN GET SIGN 00092 ROLA ROTOTA IT INTO THE CARRY FLAG 00093 ROR FPA0 ROTATE CARRY INTO MANTISSA BIT 7 00094 JMP XICJ DE-NORMALIZE FPA0 00095 XIC9 STB FPA0 LOAD MANTISSA WITH ACCB CONTENTS 00096 STB FPA0+1 00097 STB FPA0+2 00098 STB FPA0+3 00099 RTS 00100 XICA LDB FP0EXP GET EXPONENT 00101 BEQ XICD GO IF FPA0=0 00102 XICB LDB FP0SGN GET SIGN 00103 XICC ROLB BIT 7 TO CARRY 00104 LDB #$FF NEGATIVE FLAG 00105 BCS XICD GO IF NEGATIVE MANTISSA 00106 NEGB ACCB=1 IF POSITIVE MANTISSA 00107 XICD RTS 00108 XICE COM FPA0 NEGATE MANTISSA 00109 COM FPA0+1 00110 COM FPA0+2 00111 COM FPA0+3 00112 LDX FPA0+2 00113 LEAX 1,X 00114 STX FPA0+2 00115 BNE XICF 00116 LDX FPA0 00117 LEAX 1,X 00118 STX FPA0 00119 XICF RTS 00120 XICG LDA 4,X SHIFT MANTISSA RIGHT 00121 STA FPSBYT 00122 LDA 3,X 00123 STA 4,X 00124 LDA 2,X 00125 STA 3,X 00126 LDA 1,X 00127 STA 2,X 00128 LDA FPCARY 00129 STA 1,X 00130 XICH ADDB #8 ADD 8 TO DIFFERENCE OF EXPONENTS 00131 BLE XICG GO SHIFT MANTISSA 00132 LDA FPSBYT GET SUB-BYTE 00133 SUBB #8 CAST OUT THE 8 ADDED ABOVE 00134 BEQ XICK GO IF EXPONENTS NOT EQUAL 00135 XICI ASR 1,X SHIFT MANTISSA 00136 XICJ ROR 2,X 00137 ROR 3,X 00138 ROR 4,X 00139 RORA 00140 INCB 00141 BNE XICI 00142 XICK RTS 00143 END ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ00001 ************************* 00002 * 00003 * XJUMP2.ASM 00004 * MDJ 09-21-90 00005 * 00006 * GRAPHICS SUBROUTINES 00007 * SET TWO 00008 * 00009 ************************* 00010 * 00011 * U AND S STACKS MUST 00012 * ALREADY BE INITIALIZED 00013 * 00014 ************************* 00015 * 00016 * REF. PAGES A67, A87, 00017 * A80, A81, AND A82 00018 * COLOR BASIC UNRAVELLED 00019 * 00020 ************************* 00021 * 00022 VALTYP EQU 6 TYPE FLAG 00023 FPA0 EQU $50 FLOATING POINT ACCUM. #0 MANTISSA 00024 FP0EXP EQU $4F FLOATING POINT ACCUM. #0 EXPONENT 00025 ZERO EQU $8A BYTES $8A AND $8B ALWAYS ZERO 00026 FPSBYT EQU $63 FLOATING POINT SUB-BYTE 00027 FP0SGN EQU $54 FLOATING POINT ACCUM. #0 SIGN 00028 ORG $3A87 00029 XJUMP2 CLRA CLEAR MOST SIGNIFICANT BYTE ACCD 00030 CLR VALTYP SET NUMERIC VARIABLE TYPE 00031 STD FPA0 SAVE ACCD IN TOP OF FPA0 00032 LDB #$90 SET EXPONENT IF INTEGER 00033 LDA FPA0 GET MOST SIGNIF. BYTE OF MANTISSA 00034 SUBA #$80 SET CARRY IF POSITIVE 00035 STB FP0EXP SAVE EXPONENT 00036 LDD ZERO CLEAR ACCD 00037 STD FPA0+2 CLEAR BOTTOM HALF OF FPA0 00038 STA FPSBYT CLEAR SUB-BYTE 00039 STA FP0SGN CLEAR SIGN 00040 BCS XJMP2A BRANCH IF POSITIVE MANTISSA 00041 BSR XJMP2I NEGATE FPA0 MANTISSA 00042 XJMP2A CLRB CLEAR TEMPORARY EXPONENT ACCUM. 00043 XJMP2B LDA FPA0 TEST MSB OF MANTISSA 00044 BNE XJMP2E 00045 LDA FPA0+1 SHIFT MANTISSA 00046 STA FPA0 00047 LDA FPA0+2 00048 STA FPA0+1 00049 LDA FPA0+3 00050 STA FPA0+2 00051 LDA FPSBYT 00052 STA FPA0+3 00053 CLR FPSBYT 00054 ADDB #8 ADJUST EXPONENT FOR SHIFT 00055 CMPB #5*8 FIVE SHIFTS? 00056 BLT XJMP2B GO IF NO 00057 XJMP2C CLRA 00058 STA FP0EXP CLEAR THE EXPONENT 00059 STA FP0SGN CLEAR THE SIGN 00060 RTS 00061 XJMP2V RMB 1 00062 XJMP2D INCB ADD ONE TO EXPONENT ACCUMULATOR 00063 ASL FPSBYT SHIFT LEFT 00064 ROL FPA0+3 00065 ROL FPA0+2 00066 ROL FPA0+1 00067 ROL FPA0 00068 XJMP2E BPL XJMP2D BRANCH IF NOT YET NORMALIZED 00069 LDA FP0EXP GET CURRENT EXPONENT 00070 STB XJMP2V TEMPORARILY SAVE IT 00071 SUBA XJMP2V SUBTRACT FROM EXPONENT MODIFIER 00072 STA FP0EXP SAVE AS NEW EXPONENT 00073 BLS XJMP2C GO IF EXCESS LEFT SHIFTS 00074 FCB $8C SKIP TWO BYTES 00075 BCS XJMP2F BRANCH IF MANTISSA OVERFLOW 00076 ASL FPSBYT USE SUB-BYTE AS ROUND-OFF FLAG 00077 LDA #0 CLEAR ACCA WITHOUT CHANGING CARRY 00078 STA FPSBYT CLEAR THE SUB-BYTE 00079 BRA XJMP2G GO ROUND-OFF THE RESULT 00080 XJMP2F INC FP0EXP INCREMENT EXPONENT (MUL BY 2) 00081 ROR FPA0 00082 ROR FPA0+1 SHIFT RIGHT 00083 ROR FPA0+2 00084 ROR FPA0+3 00085 XJMP2G BCC XJMP2H BRANCH IF NO ROUND-OFF NEEDED 00086 BSR XJMP2J ADD ONE TO MANTISSA & ROUND-OFF 00087 BEQ XJMP2F BRANCH IF OVERFLOW 00088 XJMP2H RTS 00089 XJMP2I COM FP0SGN COMPLEMENT MANTISSA 00090 COM FPA0 00091 COM FPA0+1 00092 COM FPA0+2 00093 COM FPA0+3 00094 XJMP2J LDX FPA0+2 ADD ONE TO MANTISSA 00095 LEAX 1,X 00096 STX FPA0+2 00097 BNE XJMP2K BRANCH IF NO OVERFLOW 00098 LDX FPA0 00099 LEAX 1,X 00100 STX FPA0 00101 XJMP2K RTS 00102 END ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ00001 ************************* 00002 * 00003 * XPCLS.ASM 00004 * MDJ 09-24-90 00005 * 00006 * CLEARS THE PMODE SCREEN 00007 * 00008 ************************* 00009 * 00010 * U AND S STACKS MUST 00011 * ALREADY BE INITIALIZED 00012 * 00013 * XPCLS CLEARS THE SCREEN 00014 * TO THE BACKGROUND COLOR 00015 * AND REQUIRES NO ENTRY 00016 * CONDITIONS 00017 * 00018 * XPCLSS MUST BE ENTERED 00019 * WITH THE COLOR DESIRED 00020 * (0-3) IN REGISTER B 00021 * 00022 ************************* 00023 * 00024 * REF. PAGE B54 EXTENDED 00025 * COLOR BASIC UNRAVELLED 00026 * 00027 ************************* 00028 * 00029 BAKCOL EQU $B3 BACKGROUND COLOR 00030 BEGGRP EQU $BA START OF CURRENT GRAPHICS PAGE 00031 ENDGRP EQU $B7 END OF CURRENT GRAPHICS PAGE 00032 ORG $3BDC 00033 XPCLS LDB BAKCOL LOAD BACKGROUND COLOR 00034 XPCLSS LDA #$55 EACH BYTE = FOUR 2-BIT SUBNIBBLES 00035 MUL MULTIPLY BY COLOR 00036 LDX BEGGRP GET STARTING ADDRESS 00037 XPCLSA STB ,X+ SET BYTE TO COLOR & BUMP POINTER 00038 CMPX ENDGRP AT END OF PAGE? 00039 BNE XPCLSA GO IF NO 00040 ZEND RTS 00041 END ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ00010 ************************* 00020 * 00030 * XPPNT.ASM 00040 * MDJ 09-24-90 00050 * 00060 * TESTS A GRAPHICS POINT 00070 * 00080 ************************* 00090 * 00100 * REQUIRES: XJUMP1 00110 * XJUMP2 00120 * 00130 * MUST BE ENTERED WITH 00140 * X-COORDINATE IN HORBEG 00150 * AND Y-COORDINATE IN 00160 * VERBEG 00170 * 00180 * RETURNS POINT COLOR IN 00190 * REGISTER B 00200 * 00210 ************************* 00220 * 00230 * REF. PAGES B49 AND B48 00240 * EXTENDED COLOR BASIC 00250 * UNRAVELLED 00260 * 00270 ************************* 00280 * 00290 XJUMP1 EQU $3A2E GRAPHIC SUBROUTINES SET ONE 00300 XJUMP2 EQU $3A87 GRAPHICS SUBROUTINES SET TWO 00310 HORBEG EQU $BD HORIZONTAL (X) COORDINATE 00320 PMODE EQU $B6 MODE ARGUMENT 00330 CSSVAL EQU $C1 SCREEN'S COLOR SET ARGUMENT 00340 ORG $3BEA 00350 XPPNT LDU #HORBEG POINT TO HORIZONTAL COORDINATE 00360 LDA PMODE GET MODE ARGUMENT 00370 CMPA #2 00380 BCC XPPNT1 GO IF MODE > 1 00390 LDD 2,U GET THE VERTICAL (Y) COORDINATE 00400 LSRA DIVIDE ACCD BY 2 BECAUSE PMODES 00410 RORB 0&1 ONLY HAVE 96 VERTICAL BLKS 00420 STD 2,U SAVE NEW VERTICAL COORDINATE 00430 XPPNT1 LDA PMODE GET MODE ARGUMENT 00440 CMPA #4 00450 BCC XPPNT2 GO IF PMODE = 4 00460 LDD ,U GET HORIZONTAL COORDINATE 00470 LSRA DIVIDE ACCD BY 2 BECAUSE PMODES 00480 RORB 0,1,2,3 ONLY HAVE 128 HOR.BLKS. 00490 STD ,U SAVE NEW HORIZONTAL COORDINATE 00500 XPPNT2 JSR XJUMP1 00510 ANDA ,X AND PIXEL MASK WITH SCREEN 00520 LDB PMODE GET MODE ARGUMENT 00530 RORB SHIFT RIGHT 00540 BCC XPPNT6 GO IF PMODE = 0,2,4 00550 XPPNT3 CMPA #4 IS THE "ON" PIXEL IN 2 RIGHTBITS? 00560 BCS XPPNT4 GO IF YES 00570 RORA SHIFT RIGHT ONE PIXEL 00580 RORA 00590 BRA XPPNT3 KEEP CHECKING 00600 XPPNT4 INCA ADD ONE TO COLOR 00610 ASLA TIMES 2 00620 ADDA CSSVAL ADD COLOR SET 00630 LSRA DIVIDE BY 2 00640 XPPNT5 TFR A,B TRANSFER COLOR INTO ACCB 00650 JMP XJUMP2 00660 XPPNT6 TSTA IS 2-COLOR PIXEL ON? 00670 BEQ XPPNT5 GO IF NO 00680 CLRA FORCE 2-COLOR "ON" VALUE TO BE 1 00690 BRA XPPNT4 OR 5 DEPENDING ON CSSVAL 00700 NOP 00710 NOP 00720 NOP 00730 ZEND NOP 00740 END ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ00010 ************************* 00020 * 00030 * XPSET.ASM 00040 * MDJ 09-24-90 00050 * 00060 * SETS A GRAPHICS POINT 00070 * 00080 ************************* 00090 * 00100 * REQUIRES: XJUMP1 00110 * 00120 * MUST BE ENTERED WITH 00130 * PIXEL POINTED TO BY 00140 * REGISTER X AND PIXEL 00150 * MASK IN REGISTER A 00160 * 00170 * RETURNS VALUE <> 0 AT 00180 * CHGFLG IF THE PIXEL 00190 * COLOR IS CHANGED 00200 * 00210 ************************* 00220 * 00230 * REF. PAGES B49 AND B50 00240 * EXTENDED COLOR BASIC 00250 * UNRAVELLED 00260 * 00270 ************************* 00280 * 00290 XJUMP1 EQU $3A2E GRAPHICS SUBROUTINES SET ONE 00300 ALLCOL EQU $B5 ALL PIXELS THIS BYTE = VB3 COLOR 00310 CHGFLG EQU $DB FLAG INDICATES IF GRAPHIC DATA 00320 * HAS BEEN CHANGED 00330 ORG $3C2B 00331 XPSET PSHS U 00340 JSR XJUMP1 00341 PULS U 00350 XPSETA LDB ,X GET BYTE FROM THE SCREEN 00360 STB XPSET1 TEMPORARILY SAVE IT 00370 TFR A,B PUT PIXEL MASK IN ACCB 00380 COMA INVERT PIXEL MASK 00390 ANDA ,X AND WITH SCREEN DATA 00400 ANDB ALLCOL CONVERT TO CORRECT COLOR 00410 STB XPSET2 TEMPORARILY SAVE IT 00420 ORA XPSET2 OR REST OF PIXELS 00430 STA ,X PUT IT TO SCREEN 00440 SUBA XPSET1 SUBTRACT OLD BYTE FROM NEW BYTE 00450 ORA CHGFLG OR DIFFERENCE WITH CHANGE FLAG 00460 STA CHGFLG STORE NEW CHANGE FLAG 00470 RTS 00480 XPSET1 RMB 1 00490 XPSET2 RMB 1 00500 END ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ00001 ************************* 00002 * 00003 * XSCB.ASM 00004 * MDJ 09-21-90 00005 * 00006 * SETS THE ACTIVE COLOR 00007 * BYTE AND THE ALL ACTIVE 00008 * COLOR BYTE 00009 * 00010 ************************* 00011 * 00012 * U AND S STACKS MUST 00013 * ALREADY BE INITIALIZED 00014 * 00015 ************************* 00016 * 00017 * REF. PAGE B55 00018 * EXTENDED COLOR BASIC 00019 * UNRAVELLED 00020 * 00021 ************************* 00022 * 00023 FORCOL EQU $B2 FOREGROUND COLOR 00024 SETFLG EQU $C2 PRESET/PSET FLAG 00025 BAKCOL EQU $B3 BACKGROUND COLOR 00026 WCOLOR EQU $B4 WORKING COLOR 00027 ALLCOL EQU $B5 ALL PIXELS THIS BYTE = VB3 COLOR 00028 ORG $3B24 00029 XSCB LDB FORCOL GET FOREGROUND COLOR 00030 TST SETFLG 00031 BNE XSCB1 GO IF "PSET" 00032 LDB BAKCOL GET BACKGROUND COLOR 00033 XSCB1 STB WCOLOR STORE WORKING COLOR 00034 LDA #$55 A BYTE = 4 PIXELS 00035 MUL SET COLOR ON ALL 4 PIXELS 00036 STB ALLCOL SAVE BYTE WITH ALL PIXELS ON 00037 ZEND RTS 00038 END ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ00001 ************************* 00002 * 00003 * XSCRN.ASM 00004 * MDJ 09-21-90 00005 * 00006 * SETS SCREEN TO GRAPHICS 00007 * MODE 00008 * 00009 ************************* 00010 * 00011 * U AND S STACKS MUST 00012 * ALREADY BE INITIALIZED 00013 * 00014 ************************* 00015 * 00016 * REF. PAGE B56 00017 * EXTENDED COLOR BASIC 00018 * UNRAVELLED 00019 * 00020 ************************* 00021 * 00022 SAMREG EQU $FFC0 SAM CONTROL REGISTERS 00023 PMODE EQU $B6 GRAPHICS MODE 00024 CSSVAL EQU $C1 SCREEN'S COLOR SET ARGUMENT 00025 PIA1 EQU $FF20 PERIPHERAL INTERFACE ADAPTER ONE 00026 BEGGRP EQU $BA START OF CURRENT GRAPHICS PAGE 00027 ORG $3B34 00028 XSCRN PSHS A,B,X 00029 LDA PMODE GET GRAPHICS MODE 00030 ADDA #3 MODE OFFSET 00031 LDB #$10 OFFSET BETWEEN MODES 00032 MUL PMODE VALUE FOR VDG 00033 ORB #$80 FORCE BIT 7 HIGH 00034 ORB CSSVAL OR IN THE VDG COLOR SET ARGUMENT 00035 LDA PIA1+2 GET PORT B OF PIA1 00036 ANDA #7 MASK OFF THE VDG CONTROL DATA 00037 STA XSCRNC SAVE IT 00038 ORB XSCRNC OR IT WITH THE CALCULATED VALUE 00039 STB PIA1+2 STORE IT TO PIA1 00040 LDA BEGGRP GET MSB OF START OF GRAPHICS PAGE 00041 LSRA DIVIDE BY 2 00042 BSR XSCRNB GO SET SAM CONTROL REGISTER 00043 LDA PMODE GET GRAPHICS MODE 00044 ADDA #3 BIAS ADJUSTMENT 00045 CMPA #7 WAS PMODE = 4? 00046 BNE XSCRNE GO IF NO 00047 DECA DECREMENT ACCA IF PMODE 4 00048 XSCRNE BSR XSCRNA SET THE SAM'S VDG REGISTER 00049 PULS A,B,X 00050 RTS 00051 XSCRNA LDB #3 BITS IN SAM VDG CONTROL REGISTER 00052 LDX #SAMREG POINT X TO SAM CONTROL REGISTER 00053 XSCRN1 RORA PUT A BIT INTO THE CARRY FLAG 00054 BCC XSCRN2 GO IF BIT WAS ZERO 00055 STA 1,X SET SAM REGISTER BIT 00056 BRA XSCRN3 DO NEXT BIT 00057 XSCRN2 STA ,X CLEAR SAM REGISTER 00058 XSCRN3 LEAX 2,X NEXT BIT IN REGISTER 00059 DECB DONE ALL BITS? 00060 BNE XSCRN1 GO IF NO 00061 RTS 00062 XSCRNB LDB #7 BITS IN SAM DISPLAY PAGE REGISTER 00063 LDX #SAMREG+6 POINT TO DISPLAY PAGE REGISTER 00064 BRA XSCRN1 GO SET THE REGISTER 00065 XSCRNC RMB 1 00066 END 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