Caple C871i Manual do Utilizador descarregar pdf (Página 154)

100

101

Apple II Computer Info

ASL,DEC,INC,LSR,ROL,ROR

zp or absolute

false write of old data

zp,x or abs,x

false read of 00nn before x is added to nn

false write of old data

PHP,PHA

false read of following opcode

PLP,PLA

false read of following opcode

false read of stack (before stkptr incremented)

JSR

false read of stack

BRK

false read of following opcode

RTI

false read of following opcode

false read of stack

RTS

false read of following opcode

false read of stack

false read of byte before next instruction to execute

Bxx

false read of PC+2+offset (no carry) if page crossed

Hope this helps. Let me know if you need the full cycle by cycle details.

David Wilson Dept CompSci Uni Wollongong Australia [email protected]

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Apple II Computer Technical Information : Apple II Family Hardware Info

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