mirror of
https://github.com/nathanriggs/AppleIIAsm-Collection.git
synced 2024-10-20 10:23:45 +00:00
f5c097e70f
- added error handling - no more massive library; just a subroutine per file. This is because Merlin doesn't like large files. - added a "minify" BASIC utility that gets rid of *most* comments in a source textfile. This dramatically reduces space used if you're not terribly interested in non-inline comments. - TFILL,THLIN,TVLIN and TPUT not directly access the video memory (page one), making for a much faster draw without interfering COUT. - some stylistic changes, primarily to TFILL - change required files to minified versions only. The whole files can be found on disk 2. - got a norovirus so pretty much couldn't do anything requiring sustained attention, so focused on small things here and not on my dayjob. Cool. - created a required.vars file that separates variables and settings from the other required files. Not minified. - This current bout of revision will probably be the last, once all initial 6 disks are revamped, that focuses on all subroutines/macros in a given library at a single push. After this round, commits will be done on a subroutine or related file basis.
67 lines
1.7 KiB
Plaintext
67 lines
1.7 KiB
Plaintext
*
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*``````````````````````````````*
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* XPRINT :: SPECIAL PRINT *
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*- -*
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* PRINTS DATA IMMEDIATELY *
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*- -*
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* CLOBBERS: *
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* *
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* FLAGS: NZC----- REG: AYM- *
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*- -*
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* CYCLES: 53+ *
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* SIZE: *
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*- -*
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* USAGE: *
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* JSR SPRINT *
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* ASC "HELLO, WORLD!" *
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*- -*
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* ENTRY *
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* *
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* TOP OF STACK *
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* *
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* LOW BYTE OF RETURN ADDRESS *
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* HI BYTE OF RETURN ADDRESS *
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*- -*
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* EXIT *
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* *
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* TOP OF STACK *
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* *
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* LOW BYTE OF RETURN ADDRESS *
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* HI BYTE OF RETURN ADDRESS *
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* *
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* Y = LOW BYTE OF ADDRESS *
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* X = UNCHANGED *
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* A = LO BYTE *
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*,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,*
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*
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XPRINT
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*
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** GET CURRENT EXEC ADDRESS
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*
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PLA
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STA ADDR1
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PLA
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STA ADDR1+1
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*
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LDY #$01 ; POINT TO NEXT
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; INSTRUCTION
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:LOOP
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LDA (ADDR1),Y
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BEQ :DONE
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JSR COUT1
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INY
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BNE :LOOP
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:DONE ; RESTORE STACK
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CLC ; EXEC POINTER
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TYA ; TO RESUME
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ADC ADDR1
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STA ADDR1
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LDA ADDR1+1
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ADC #$00
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PHA
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LDA ADDR1
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PHA
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RTS
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:EXIT
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*
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