Developer CD Series 1992 June: ROMin Holiday

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/ Developer CD Series 1992 June: ROMin Holiday / ADC Developer CD (1992-06) (''ROMin Holiday'')_iso / Developer Connection - 06-1992.iso / Development Platforms / Apple II / Essentials / MPW IIGS Interfaces / AIIGSIncludes / M16.Util < prev next >

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Text File | 1990-04-01 | 14.8 KB | 619 lines | [TEXT/MPS ]

************************************************************************* * * * Apple //GS Utility Macros * * by * * Lou Infeld * * * * Copyright Apple Computer, Inc. 1986-1988 * * All Rights Reserved * * * * Revision History * * ---------------- * * v1.0R1 (04/29/87) -- First Release * * This file is a subset of the old * * 'M16.Utility' * * v2.0R1 (01/22/88) -- First AsmIIGS release * * v2.0R2 (02/11/88) -- "writelin" renamed "writeline" * * v2.0R3 (03/29/88) -- "|" added to pea instrs to avoid Assembler * * warning * * "pushlong" was incorrect if &offset was "s" * * or not specified * * v2.0R4 (04/14/88) -- "writestr" and "writeline" didn't restore * * STRING setting * * v2.0R5 (08/22/88) -- "inc4" and "dec4" redefined to support only * * positive 4 byte integers * * "sub4" fixed so that there will not be any * * truncation warnings generated * * Pull macros now check for missing parameter * * or extra parameter * * v2.0R6 (09/06/88) -- "dec4" fixed to support positive 4 byte * * integers * * v2.0R7 (4/4/89) -- changed "long" to "longmx", "short" to "shortmx" * * and added stack based macros (rls3) * ************************************************************************* ;............................................................ ; ; Pull long (4 bytes) from stack ; ; pulllong address - pull off stack to address ; pulllong addr1,addr2 - pull off stack into 2 places ; pulllong [zeropage],offset - pull off stack and store indirectly ; pulllong - pull off stack and leave in A ;............................................................... MACRO pulllong &addr1,&addr2 IF &addr1='' THEN IF &addr2≠'' THEN AERROR 'Illegal 2nd parameter' ENDIF pullword pullword ELSEIF &addr2='' THEN pullword &addr1 pullword &addr1+2 ELSEIF &addr1[1:1]='[' THEN ldy #&addr2 pullword &addr1,y ldy #&addr2+2 pullword &addr1,y ELSE pullword &addr1 sta &addr2 pullword &addr1+2 sta &addr2+2 ENDIF MEND ;............................................................... ; ; Pull 3 bytes from stack ; ; pull3 addr -- pulls bytes off stack and stores in 'loc' ;............................................................... MACRO pull3 &addr IF &addr='' THEN AERROR 'A parameter must be specified' ENDIF pull1 &addr pullword &addr+1 MEND ;............................................................... ; ; Pull 2 bytes from stack ; ; pullword loc -- pulls bytes off stack and stores in 'loc' ; pullword loc,x -- pulls bytes off stack and stores in 'loc,x' ; pullword -- pulls bytes off stack and leaves in A ;............................................................... MACRO pullword &addr,® pla IF &addr≠'' THEN IF ®≠'' THEN sta &addr,® ELSE sta &addr ENDIF ELSEIF ®≠'' THEN AERROR 'Illegal 2nd parameter' ENDIF MEND ;............................................................... ; ; Pull 1 byte from stack ; ; pull1 loc -- pulls byte off stack and stores in 'loc' ; pull1 loc,x -- pulls byte off stack and stores in 'loc,x' ; pull1 -- pulls byte off stack and leaves in A ;............................................................... MACRO pull1 &addr,® shortm pullword &addr,® longm MEND ;............................................................... ; ; Push 1 byte onto stack ; ; push1 loc -- pushes byte onto stack from 'loc' ; push1 loc,x -- pushes byte onto stack from 'loc,x' ; push1 #n -- pushes constant #n onto stack ; push1 -- pushes byte onto stack (from A) ;............................................................... MACRO push1 &addr,® shortm pushword &addr,® longm MEND ;............................................................ ; ; Push long (4 bytes) onto stack ; ; pushlong address - push contents of address ; pushlong address,x - push contents of address,x ; pushlong const,s - push contents of stack+const ; pushlong #address/const - push address or constant ; pushlong [zeropage],offset - push using indirect address ;............................................................... MACRO pushlong &addr,&offset IF &addr[1:1]='#' THEN pea &addr[2:255]>>16 pea |&addr[2:255] ELSEIF &addr[1:1]='[' THEN ldy #&offset+2 pushword &addr,y ldy #&offset pushword &addr,y ELSEIF &offset='s' THEN pushword &addr+2,s pushword &addr+2,s ELSEIF &offset='' THEN pushword &addr+2 pushword &addr ELSE pushword &addr+2,&offset pushword &addr,&offset ENDIF MEND ;............................................................... ; ; Push 3 bytes onto stack ; ; push3 addr -- pushes bytes onto stack from 'loc' ; push3 addr,x -- pushes bytes onto stack from 'loc,x' ; push3 #n -- pushes constant #n onto stack ;............................................................... MACRO push3 &addr,® IF ®≠'' THEN lda &addr+1,® pha phb lda &addr,® sta 1,s ELSEIF &addr[1:1]='#' THEN lda #&addr[2:255]>>8 pha GOTO .a ELSE lda &addr+1 pha .a phb lda &addr sta 1,s ENDIF MEND ;............................................................... ; ; Push 2 bytes onto stack ; ; pushword loc -- pushes bytes onto stack from 'loc' ; pushword loc,x -- pushes bytes onto stack from 'loc,x' ; pushword #n -- pushes constant #n onto stack ; pushword -- pushes bytes onto stack (from A) ;............................................................... MACRO pushword &addr,® IF &addr[1:1]='#' AND &SETTING('LONGA')='ON' THEN pea |&addr[2:255] ELSE IF &addr≠'' THEN IF ®≠'' THEN lda &addr,® ELSE lda &addr ENDIF ENDIF pha ENDIF MEND ;............................................................... ; ; Add 2 byte integers ; ; add loc1,loc2,loc3 - adds 'loc1' to 'loc2' and stores in 'loc3' ; add loc1,loc2 - adds 'loc1' to 'loc2' and leaves in A ; add ,loc2,loc3 - adds A with 'loc2' and stores in 'loc3' ; ; 'loc1' and 'loc2' can be constants ;............................................................... MACRO add &a1,&a2,&a3 IF &a1≠'' THEN lda &a1 ENDIF clc adc &a2 IF &a3≠'' THEN sta &a3 ENDIF MEND ;............................................................... ; ; Add 4 byte integers ; ; add4 loc1,loc2,loc3 - adds 'loc1' to 'loc2' and stores in 'loc3' ; add4 ,loc2,loc3 - adds A to 'loc2' and stores in 'loc3' ; ; 'loc1' and 'loc2' can be constants ;............................................................... MACRO add4 &a1,&a2,&a3 IF &a1≠'' THEN lda &a1 ENDIF clc adc &a2 sta &a3 IF &a1='' THEN lda #0 ELSEIF &a1[1:1]='#' THEN lda #^&a1[2:255] ELSE lda &a1+2 ENDIF IF &a2[1:1]='#' THEN adc #^&a2[2:255] ELSE adc &a2+2 ENDIF sta &a3+2 MEND ;............................................................... ; ; Increment a positive 4 byte integer ; ; inc4 loc - increments 'loc' ;............................................................... MACRO inc4 &a1 inc &a1 bne @a inc &a1+2 @a MEND ;............................................................... ; ; Subtract 2 byte integers ; ; sub loc1,loc2,loc3 - subtracts 'loc2' from 'loc1' and stores in 'loc3' ; sub loc1,loc2 - subtracts 'loc2' from 'loc1' and leaves in A ; sub ,loc2,loc3 - subtracts 'loc2' from A and stores in 'loc3' ; ; 'loc1' and 'loc2' can be constants ;............................................................... MACRO sub &a1,&a2,&a3 IF &a1≠'' THEN lda &a1 ENDIF sec sbc &a2 IF &a3≠'' THEN sta &a3 ENDIF MEND ;............................................................... ; ; Subtract 4 byte integers ; ; sub4 loc1,loc2,loc3 - subtracts 'loc2' from 'loc1' and stores in 'loc3' ; sub4 ,loc2,loc3 - subtracts 'loc2' from A and stores in 'loc3' ;............................................................... MACRO sub4 &a1,&a2,&a3 IF &a1≠'' THEN IF &a1[1:1]='#' THEN lda #<&a1[2:255] ELSE lda &a1 ENDIF ENDIF sec IF &a1[1:1]='#' THEN sbc #<&a2[2:255] ELSE sbc &a2 ENDIF sta &a3 IF &a1='' THEN lda #0 ELSEIF &a1[1:1]='#' THEN lda #^&a1[2:255] ELSE lda &a1+2 ENDIF IF &a2[1:1]='#' THEN sbc #^&a2[2:255] ELSE sbc &a2+2 ENDIF sta &a3+2 MEND ;............................................................... ; ; Decrement a positive 4 byte integer ; ; dec4 loc - decrements 'loc' ;............................................................... MACRO dec4 &a1 pha sec lda &a1 sbc #1 bcs @a dec &a1+2 @a sta &a1 pla MEND ;............................................................... ; ; Define string ; ; Generates a Pascal type of string ;............................................................... MACRO str &string lclc &sset &sset SETC &SETTING('STRING') STRING PASCAL dc.B &string STRING &sset MEND ;............................................................... ; ; Define pointer ;............................................................... MACRO dp &pointer dc.L &pointer MEND ;............................................................... ; ; Left Shift 4 bytes ; ; asl4 loc,#n ;n is shift count (pos) ; asl4 loc,lnum ;lnum contains shift count (pos) ; asl4 loc ;X contains shift count (pos) ;............................................................... MACRO asl4 &loc,&num lda &loc+2 IF &num≠'' THEN ldx &num ENDIF @a asl a asl &loc adc #0 dex bne @a sta &loc+2 MEND ;............................................................... ; ; Right Shift 4 bytes ; ; lsr4 loc,#n ;n is shift count (pos) ; lsr4 loc,lnum ;lnum contains shift count (pos) ; lsr4 loc ;X contains shift count (neg) ;............................................................... MACRO lsr4 &loc,&num IF &num≠'' THEN lda &num eor #$FFFF clc adc #1 tax ENDIF lda &loc @a lsr a lsr &loc+2 bcc @b ora #$8000 @b inx bne @a sta &loc MEND ;............................................................... ; ; Turn on native mode ; ; The processor is put into 'native' mode. 8 bit or 16 bit ; mode can be specified by using 'short' or 'long' as the ; parameter. If no parameter is specified, 'long' is assumed ;............................................................... MACRO native &mode clc xce IF &mode≠'' THEN &mode ELSE longmx ENDIF MEND ;............................................................... ; ; Turn on emulation mode ; ; The processor is put into 'emulation' mode. ;............................................................... MACRO emulation sec xce longa off longi off MEND ;............................................................... ; ; Set Memory & registers to 16 bits ;............................................................... MACRO longmx rep #%00110000 longa on longi on MEND ;............................................................... ; ; Set Memory & A register to 16 bits ;............................................................... MACRO longm rep #%00100000 longa on MEND ;............................................................... ; ; Set X & Y registers to 16 bits ;............................................................... MACRO longx rep #%00010000 longi on MEND ;............................................................... ; ; Set Memory & registers to 8 bits ;............................................................... MACRO short sep #%00110000 longa off longi off MEND ;............................................................... ; ; Set Memory & A register to 8 bits ;............................................................... MACRO shortm sep #%00100000 longa off MEND ;............................................................... ; ; Set X & Y registers to 8 bits ;............................................................... MACRO shortx sep #%00010000 longi off MEND ;............................................................... ; ; Write string ; ; writestr loc - string at loc 'loc' ; writestr #'ABC' - string='ABC' ; writestr - A,Y has loc of string ;............................................................... MACRO writestr &addr IF &addr≠'' THEN IF &addr[1:1]='#' THEN bra @b LCLC &sset &sset SETC &SETTING('STRING') STRING PASCAL @a DC.B &addr[2:255] STRING &sset @b pea @a>>16 pea |@a ELSE pea &addr>>16 pea |&addr ENDIF ELSE phy pha ENDIF ldx #$1C0C jsl $E10000 MEND ;............................................................... ; ; Write line (string+CR) ; ; writeline loc - string at loc 'loc' ; writeline #'ABC' - string='ABC' ; writeline 'ABC' - string='ABC' ; writeline - CR only ; ;............................................................... MACRO writeline &addr IF &addr≠'' THEN IF &addr[1:1]='#' OR &addr[1:1]='''' THEN bra @b LCLC &sset &sset SETC &SETTING('STRING') STRING PASCAL IF &addr[1:1]='#' THEN @a DC.B &addr[2:255] ELSE @a DC.B &addr[1:255] ENDIF STRING &sset @b pea @a>>16 pea |@a ELSE pea &addr>>16 pea |&addr ENDIF ELSE pea @c+1>>16 pea |@c+1 ENDIF ldx #$1A0C @c jsl $E10000 MEND ;............................................................... ; ; Write character ; ; writech - char in A register ; writech #'A' - char='A' ; writech ch,x - char in loc 'ch,x' ;............................................................... MACRO writech &addr,® IF &addr≠'' THEN IF ®≠'' THEN lda &addr,® ELSE lda &addr ENDIF ENDIF pha ldx #$180C jsl $E10000 MEND ;............................................................... ; ; Read a char from keyboard ; ; readch addr - char stored in 'addr' ; readch - char left in A register ; ;............................................................... MACRO readch &addr pea 0 pea 1 ldx #$220C jsl $E10000 pla IF &addr≠'' THEN sta &addr ENDIF MEND