mirror of
https://github.com/nathanriggs/AppleIIAsm-Collection.git
synced 2024-12-02 12:52:03 +00:00
c8cac53c5e
Massive updates that changes the way most subroutines are handled. Major bugfixes, various utilities added, started higher-level libraries.
120 lines
2.3 KiB
Plaintext
120 lines
2.3 KiB
Plaintext
AGET161
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PLA
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STA RETADR
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PLA
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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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PLA
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STA :AIDX+1
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STA SCRATCH
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PLA
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STA ADDR4 ; ARRAY ADDRESS
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PLA
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STA ADDR4+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 :ASIZE+1
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INY
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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+1
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CMP :ASIZE+1
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BCS :OVFHI
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JMP :ERREND
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:OVFHI
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LDA :IDX
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CMP :ASIZE
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BCS :OVF
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JMP :ERREND
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:OVF
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_ERR #:E_SID;#:E_OVF1;#: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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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 #3
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ADC :IDX
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STA :RES
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BCS :ADDHI
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JMP :XADD
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:ADDHI
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LDA #1
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ADC :IDX+1
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STA :IDX+1
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:XADD
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LDA :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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BCS :ADD1HI
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JMP :XADD2
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:ADD1HI
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INC :RES+1
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:XADD2
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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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LDY #0
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:LP
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LDA (ADDR2),Y
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STA RETURN,Y
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INY
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CPY :ESIZEBAK
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BNE :LP
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LDA :ESIZEBAK
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STA RETLEN
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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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:ESIZE DS 1
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:ESIZEBAK DS 1
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:ASIZE DS 2
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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 "AGET161 (GET161 MACRO),",00
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:E_DUMP ASC "DUMPING :ESIZE(1) :ESIZEBAK(1) :ASIZE(2)"
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ASC ":AIDX(2) :IDX(2) :RES(2)",00
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:E_OVF1 ASC "OUT OF BOUNDS! INDEX > ARRAY LENGTH",00
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