mirror of
https://github.com/nathanriggs/AppleIIAsm-Collection.git
synced 2024-11-28 03:52:10 +00:00
875dd80998
- fixed a bunch of bugs - separated common and stdio libraries - commenting upgrades - created min versions of each library
321 lines
5.5 KiB
Plaintext
321 lines
5.5 KiB
Plaintext
JMP COMMONX
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*
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MEMFILL
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*
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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 :VALUE
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PLA
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STA :ARYSZ
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PLA
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STA :ARYSZ+1
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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 :VALUE
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LDX :ARYSZ+1
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BEQ :PARTPG
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LDY #0
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:FULLPG
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STA (ADDR1),Y
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INY
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BNE :FULLPG
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INC ADDR1+1
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DEX
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BNE :FULLPG
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:PARTPG
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LDX :ARYSZ
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BEQ :EXIT
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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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:EXIT
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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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RTS
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:VALUE DS 1
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:ARYSZ DS 2
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*
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MEMMOVE
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*
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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 :MVELEN
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PLA
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STA :MVELEN+1
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PLA
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STA ADDR2
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PLA
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STA ADDR2+1
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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 ADDR2
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SEC
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SBC ADDR1
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TAX
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LDA ADDR2+1
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SBC ADDR1+1
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TAY
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TXA
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CMP :MVELEN
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TYA
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SBC :MVELEN+1
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BCS :DOLEFT
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JSR :MVERHT
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JMP :EXIT
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:DOLEFT
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JSR :MVELEFT
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:EXIT
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JMP :MREXIT
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:MVELEFT
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LDY #0
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LDX :MVELEN+1
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BEQ :MLPART
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:MLPAGE
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LDA (ADDR1),Y
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STA (ADDR2),Y
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INY
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BNE :MLPAGE
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INC ADDR1+1
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INC ADDR2+1
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DEX
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BNE :MLPAGE
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:MLPART
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LDX :MVELEN
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BEQ :MLEXIT
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:MLLAST
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LDA (ADDR1),Y
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STA (ADDR2),Y
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INY
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DEX
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BNE :MLLAST
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:MLEXIT
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JMP :MREXIT
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:MVERHT
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LDA :MVELEN+1
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CLC
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ADC ADDR1+1
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STA ADDR1+1
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LDA :MVELEN+1
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CLC
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ADC ADDR2+1
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STA ADDR2+1
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LDY :MVELEN
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BEQ :MRPAGE
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:MR0
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DEY
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LDA (ADDR1),Y
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STA (ADDR2),Y
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CPY #0
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BNE :MR0
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:MRPAGE
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LDX :MVELEN+1
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BEQ :MREXIT
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:MR1
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DEC ADDR1+1
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DEC ADDR2+1
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:MR2
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DEY
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LDA (ADDR1),Y
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STA (ADDR2),Y
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CPY #0
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BNE :MR2
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DEX
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BNE :MR
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:MREXIT
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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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RTS
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:MVELEN DS 2
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*
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DELAYMS
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*
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MSCNT EQU $0CA
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:DELAY
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CPY #0
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BEQ :EXIT
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NOP
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CPY #1
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BNE :DELAYA
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JMP :LAST1
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:DELAYA
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DEY
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:DELAY0
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LDX #MSCNT
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:DELAY1
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DEX
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BNE :DELAY1
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NOP
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NOP
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DEY
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BNE :DELAY0
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:LAST1
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LDX #MSCNT-3
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:DELAY2
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DEX
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BNE :DELAY2
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:EXIT
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RTS
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*
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ZMSAVE
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*
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LDX ADDR1
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LDY ADDR1+1
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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 ADDR1
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PLA
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STA ADDR1+1
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TYA
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LDY #1
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STA (ADDR1),Y
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LDY #0
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TXA
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STA (ADDR1),Y
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LDY #2
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LDA $08
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STA (ADDR1),Y
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INY
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LDA $09
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STA (ADDR1),Y
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INY
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LDA $19
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STA (ADDR1),Y
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INY
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LDA $1E
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STA (ADDR1),Y
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INY
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LDA $E3
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STA (ADDR1),Y
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INY
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LDA $EB
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STA (ADDR1),Y
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INY
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LDA $EC
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STA (ADDR1),Y
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INY
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LDA $ED
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STA (ADDR1),Y
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INY
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LDA $EE
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STA (ADDR1),Y
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INY
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LDA $EF
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STA (ADDR1),Y
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INY
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LDA $FA
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STA (ADDR1),Y
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INY
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LDA $FB
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STA (ADDR1),Y
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INY
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LDA $FC
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STA (ADDR1),Y
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INY
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LDA $FD
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STA (ADDR1),Y
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INY
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LDA $FE
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STA (ADDR1),Y
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INY
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LDA $FF
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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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RTS
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:RETADR DS 2
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*
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ZMLOAD
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*
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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 ADDR1
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PLA
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STA ADDR1+1
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LDY #2
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LDA (ADDR1),Y
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STA $08
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INY
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LDA (ADDR1),Y
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STA $09
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INY
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LDA (ADDR1),Y
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STA $19
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INY
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LDA (ADDR1),Y
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STA $1E
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INY
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LDA (ADDR1),Y
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STA $E3
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INY
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LDA (ADDR1),Y
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STA $EB
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INY
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LDA (ADDR1),Y
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STA $EC
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INY
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LDA (ADDR1),Y
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STA $ED
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INY
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LDA (ADDR1),Y
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STA $EE
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INY
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LDA (ADDR1),Y
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STA $EF
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INY
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LDA (ADDR1),Y
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STA $FA
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INY
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LDA (ADDR1),Y
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STA $FB
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INY
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LDA (ADDR1),Y
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STA $FC
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INY
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LDA (ADDR1),Y
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STA $FD
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INY
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LDA (ADDR1),Y
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STA $FE
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INY
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LDA (ADDR1),Y
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STA $FF
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LDY #0
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LDA (ADDR1),Y
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TAX
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LDA (ADDR1+1),Y
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TAY
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STX ADDR1
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STY ADDR1+1
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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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RTS
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:RETADR DS 2
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COMMONX RTS
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