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Direct Page Addressing: Difference between revisions
From SnesLab
(opcode A4) |
(opcode E4) |
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* [[BIT]] | * [[BIT]] | ||
* [[CMP]] | * [[CMP]] | ||
* [[CPX]] | * [[CPX]] (opcode E4) | ||
* [[CPY]] | * [[CPY]] | ||
* [[ORA]] | * [[ORA]] | ||
Revision as of 13:46, 27 June 2024
Direct Page Addressing is an addressing mode that is supported by the 65c816 and SPC700.
The operand specifies which byte of the direct page to access.
Supported by 24 instructions:
- ADC (opcode 65)
- SBC (opcode E5)
- EOR (opcode 45)
- ASL
- LSR
- INC
- DEC
- BIT
- CMP
- CPX (opcode E4)
- CPY
- ORA
- AND
- LDA (opcode A5)
- LDX (opcode A6)
- LDY (opcode A4)
- ROL (opcode 26)
- ROR (opcode 66)
- STA (opcode 85)
- STX (opcode 86)
- STY (opcode 84)
- STZ (opcode 64)
- TRB (opcode 14)
- TSB (opcode 04)