mirror of
https://github.com/nathanriggs/AppleIIAsm-Collection.git
synced 2024-11-24 07:31:09 +00:00
217 lines
3.8 KiB
Plaintext
217 lines
3.8 KiB
Plaintext
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JMP ARRAYS81X
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SKP 10
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ADIM81
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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 :ESIZE
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STA :ESZBAK
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PLA
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STA :ASIZE
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STA :ASZBAK
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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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LDY #0
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LDA #0
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STY SCRATCH
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BEQ :ENTLP
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:DOADD
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CLC
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ADC :ASIZE
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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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:LP
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ASL :ASIZE
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ROL SCRATCH
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:ENTLP
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LSR :ESIZE
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BCS :DOADD
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BNE :LP
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CLC
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INX
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INX
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BCC :NOINY
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INY
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:NOINY
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STX :MSIZE
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STY :MSIZE+1
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LDA #0
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LDX :MSIZE+1
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BEQ :PART
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LDY #0
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:FULL
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STA (ADDR1),Y
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INY
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BNE :FULL
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INC ADDR1+1
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DEX
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BNE :FULL
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:PART
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LDX :MSIZE
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BEQ :MFEXIT
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LDY #0
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:PARTLP
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STA (ADDR1),Y
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INY
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DEX
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BNE :PARTLP
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:MFEXIT
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LDY #0
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LDA :ASZBAK
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STA (ADDR1),Y
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INY
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LDA :ESZBAK
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STA (ADDR1),Y
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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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LDY ADDR1
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LDX ADDR1+1
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LDA :ASZBAK
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LDA :MSIZE
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STA RETURN
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LDA :MSIZE+1
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STA RETURN+1
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LDA #2
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STA RETLEN
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RTS
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:MSIZE DS 2
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:ASIZE DS 1
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:ESIZE DS 1
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:ASZBAK DS 1
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:ESZBAK DS 1
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SKP 10
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AGET81
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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 :IDX
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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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LDA #0
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STA :IDX+1
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LDY #1
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LDA (ADDR1),Y
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STA :ESIZE
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STA RETLEN
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LDY #0
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LDA #0
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TAY
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STY SCRATCH
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BEQ :ENTLP
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:DOADD
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CLC
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ADC :IDX
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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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:LP
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ASL :IDX
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ROL SCRATCH
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:ENTLP
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LSR :ESIZE
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BCS :DOADD
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BNE :LP
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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 ADDR1
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STA :RES
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LDA :RES+1
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ADC ADDR1+1
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STA :RES+1
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LDY #0
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LDA :RES
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STA ADDR1
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LDA :RES+1
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STA ADDR1+1
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:LDLOOP
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LDA (ADDR1),Y
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STA RETURN,Y
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INY
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CPY RETLEN
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BCC :LDLOOP
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BEQ :LDLOOP
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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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LDY :RES
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LDX :RES+1
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LDA RETLEN
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RTS
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:RES DS 2
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:IDX DS 2
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:ESIZE DS 1
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SKP 10
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APUT81
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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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PLA
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STA ADDR4
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PLA
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STA ADDR4+1
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PLA
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STA ADDR3
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PLA
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STA ADDR3+1
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LDA ADDR4+1
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PHA
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LDA ADDR4
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PHA
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LDA :AIDX
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PHA
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JSR AGET81
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STY ADDR2
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STX ADDR2+1
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LDY #1
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LDA (ADDR4),Y
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STA :ESIZE
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LDY #0
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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 :ESIZE
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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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:ASIZE DS 1
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:AIDX DS 1
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ARRAYS81X
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