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Zero Flag: Difference between revisions
From SnesLab
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(→See Also: overflow flag) |
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* [[Negative Flag]] | * [[Negative Flag]] | ||
* [[Carry Flag]] | * [[Carry Flag]] | ||
* [[Overflow Flag]] | |||
=== Reference === | === Reference === | ||
Revision as of 20:09, 15 July 2024
The Zero Flag (Z) exists on the 65c816. It is bit 1 of the status register. It is affected by these 41 instructions:
- ADC
- AND
- ASL
- BIT
- CMP
- CPX
- CPY
- DEC
- DEX
- DEY
- EOR
- INC
- INX
- INY
- LDA
- LDX
- LDY
- LSR
- ORA
- PLA
- PLB
- PLD
- PLX
- PLY
- ROL
- ROR
- SBC
- TAX
- TAY
- TCD
- TCS
- TDC
- TRB
- TSB
- TSC
- TSX
- TXA
- TXY
- TYA
- TYX
- XBA
The SPC700 and Super FX chips also have a zero flag.