
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.
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Apple II Computer Technical Information : Apple II Family Hardware Info
ftp://ground.ecn.uiowa.edu/2/apple2/miscinfo/hardware : May 2001 : 154 of 572
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