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Immediate Addressing: Difference between revisions
From SnesLab
(opcode 89) |
(opcode 69) |
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Supported by the following instructions: | Supported by the following instructions: | ||
* [[ADC]] | * [[ADC]] (opcode 69) | ||
* [[SBC]] | * [[SBC]] | ||
* [[EOR]] | * [[EOR]] | ||
Revision as of 13:59, 27 June 2024
Immediate Addressing is when the data to be operated on directly follows the opcode in the instruction steam. The immediate data is generally preceded by a # in the assembler source.
Supported by the following instructions:
- ADC (opcode 69)
- SBC
- EOR
- AND
- ORA
- LDA
- LDX
- LDY
- CMP
- CPX
- CPY
- BIT (opcode 89)
- SEP (opcode E2)
- REP (opcode C2)
- ADD (Super FX)
On the SPC700, "imm" means "8-bit immediate data."[4]
See Also
Reference
- Eyes & Lichty page 397, https://archive.org/details/0893037893ProgrammingThe65816/page/n423
- lbid, page 108: https://archive.org/details/0893037893ProgrammingThe65816/page/n134
- Labiak page 209: https://archive.org/details/Programming_the_65816/page/n219
- https://archive.org/details/SNESDevManual/book1/page/n226