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ALT2: Difference between revisions
From SnesLab
(added instructions requiring ALT2) |
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* OR #n | * OR #n | ||
* RAMB | * RAMB | ||
* SM (xx), | * SM (xx), R<sub>n</sub> | ||
* SMS (yy), | * SMS (yy), R<sub>n</sub> | ||
* SUB #n | * SUB #n | ||
Revision as of 22:54, 5 July 2024
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | ROM Speed | RAM Speed | Cache Speed | ||
| Implied (type 2) | 3E | 1 byte | 3 cycles | 3 cycles | 1 cycle | ||
| Flags Affected | ||||||||
|---|---|---|---|---|---|---|---|---|
| B | ALT1 | ALT2 | O/V | S | CY | Z | ||
| . | . | 1 | . | . | . | . | ||
ALT2 is both the name of a Super FX flag and the flag prefix instruction that sets it. It is bit 9 of the status flag register.
The following instructions require ALT2:
- ADD #n
- AND #n
- GETBL
- MULT #n
- OR #n
- RAMB
- SM (xx), Rn
- SMS (yy), Rn
- SUB #n
See Also
External Links
- Official Nintendo documentation on ALT2: 9.9 on page 2-9-8 of Book II