mirror of
https://github.com/nathanriggs/AppleIIAsm-Collection.git
synced 2024-12-12 01:30:00 +00:00
113 lines
2.5 KiB
Plaintext
113 lines
2.5 KiB
Plaintext
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APUT81
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PLA
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STA :RETADR ; LOCAL RETURN ADDRESS STORAGE
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PLA ; BECAUSE OF CALLING AGET81
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STA :RETADR+1
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PLA
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STA :AIDX
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STA :IDX
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DEC :AIDX
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DEC :IDX
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PLA
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STA ADDR4 ; ARRAY ADDRESS; USES ADDR4
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; ADDR1
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PLA
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STA ADDR4+1
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PLA
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STA ADDR3 ; ADDRESS OF DATA TO BE
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PLA
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STA ADDR3+1
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LDY #0
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LDA (ADDR4),Y
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STA :ASIZE
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LDY #1
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LDA (ADDR4),Y
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STA :ESIZE
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STA :ESIZEBAK
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LDA ERRCTRL
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CMP #1
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BEQ :CHKERR
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JMP :ERREND
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:CHKERR
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LDA :IDX ; IF IDX > ARRAY LENGTH
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CLC
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ADC #1
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CMP :ASIZE
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BCS :OVF
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JMP :CHKCONT
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:OVF
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_ERR :E_SID;:E_OVF1;:E_DUMP;:ESIZE;#9
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:CHKCONT
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LDA :IDX
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CMP #255 ; NO ZERO INDEX
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BEQ :UNF ; UNDERFLOW
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JMP :ERREND
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:UNF
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_ERR :E_SID;:E_UNF;:E_DUMP;:ESIZE;#9
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:ERREND
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LDY #0
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LDA #0
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STY SCRATCH
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STY SCRATCH+1
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BEQ :ENTLPA
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:DOADD
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CLC
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ADC :AIDX
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TAX
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TYA
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ADC SCRATCH
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TAY
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TXA
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:LPA
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ASL :AIDX
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ROL SCRATCH
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:ENTLPA
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LSR :ESIZE
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BCS :DOADD
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BNE :LPA
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STX :IDX
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STY :IDX+1
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CLC
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LDA #2
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ADC :IDX
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STA :RES
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LDA #0
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ADC :IDX+1
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STA :RES+1
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CLC
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LDA :RES
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ADC ADDR4
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STA :RES
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LDA :RES+1
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ADC ADDR4+1
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STA :RES+1
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STA ADDR2+1
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LDA :RES
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STA ADDR2
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:LP
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LDA (ADDR3),Y
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STA (ADDR2),Y
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INY
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CPY :ESIZEBAK
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BNE :LP
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LDA :RETADR+1
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PHA
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LDA :RETADR
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PHA
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LDX ADDR2+1
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LDY ADDR2
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LDA :ESIZE
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RTS
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:RETADR DS 2
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:ESIZE DS 1
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:ESIZEBAK DS 1
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:ASIZE DS 1
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:AIDX DS 2
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:IDX DS 2
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:RES DS 2
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:E_SID ASC "APUT81 (PUT81 MACRO)",00
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:E_DUMP ASC "DUMPING :ESIZE(1) :ESIZEBAK(1) :ASIZE(1)"
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ASC ":AIDX(2) :IDX(2) :RES(2)",00
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:E_OVF1 ASC "OVERFLOW! INDEX HIGHER THAN ARRAY LENGTH",00
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:E_UNF ASC "UNDERFLOW! CANNOT USE A ZERO INDEX",00
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