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ALT3: Difference between revisions
From SnesLab
(see also ALT 0) |
(added instructions requiring ALT3) |
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Unlike ALT1 and ALT2 however, ALT3 is only an instruction and not also the name of a flag itself. | Unlike ALT1 and ALT2 however, ALT3 is only an instruction and not also the name of a flag itself. | ||
The following instructions require ALT3: | |||
* ADC #n | |||
* BIC #n | |||
* CMP Rn | |||
* GETBS | |||
==== See Also ==== | ==== See Also ==== | ||
Revision as of 00:03, 6 July 2024
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | ROM Speed | RAM Speed | Cache Speed | ||
| Implied (type 2) | 3F | 1 byte | 3 cycles | 3 cycles | 1 cycle | ||
| Flags Affected | ||||||||
|---|---|---|---|---|---|---|---|---|
| B | ALT1 | ALT2 | O/V | S | CY | Z | ||
| . | 1 | 1 | . | . | . | . | ||
ALT3 is a Super FX flag prefix instruction that sets both the ALT1 and ALT2 flags.
Unlike ALT1 and ALT2 however, ALT3 is only an instruction and not also the name of a flag itself.
The following instructions require ALT3:
- ADC #n
- BIC #n
- CMP Rn
- GETBS
See Also
External Links
- Official Nintendo documentation on ALT3: 9.10 on page 2-9-9 of Book II