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https://github.com/tjboldt/Apple2-IO-RPi.git
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Fix firmware issue on read
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@ -163,7 +163,12 @@ GetNibble:
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waitRead:
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lda InputByte
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bmi waitRead
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and #$f0 ;set all flags high
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ora #$f0 ;set all flags high
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sta OutputByte
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pha
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finishRead:
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lda InputByte
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bpl finishRead
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pla
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rts
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@ -1,4 +1,4 @@
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ca65 V2.18 - Ubuntu 2.18-1
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ca65 V2.19 - Git b22d8c74
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Main file : Driver.asm
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Current file: Driver.asm
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@ -167,8 +167,13 @@ Current file: Driver.asm
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0010C8 1 waitRead:
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0010C8 1 AD DE C0 lda InputByte
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0010CB 1 30 FB bmi waitRead
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0010CD 1 29 F0 and #$f0 ;set all flags high
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0010CD 1 09 F0 ora #$f0 ;set all flags high
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0010CF 1 8D DD C0 sta OutputByte
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0010D2 1 60 rts
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0010D3 1
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0010D3 1
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0010D2 1 48 pha
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0010D3 1 finishRead:
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0010D3 1 AD DE C0 lda InputByte
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0010D6 1 10 FB bpl finishRead
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0010D8 1 68 pla
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0010D9 1 60 rts
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0010DA 1
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0010DA 1
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