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SMS (Super FX): Difference between revisions
From SnesLab
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Revision as of 05:14, 16 July 2024
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | ROM Speed | RAM Speed | Cache Speed | ||
| Implied Indirect | 3EAnkk | 3 bytes | 9 to 14 cycles | 13 to 17 cycles | 3 to 8 cycles | ||
| Flags Affected | ||||||||
|---|---|---|---|---|---|---|---|---|
| B | ALT1 | ALT2 | O/V | S | CY | Z | ||
| 0 | 0 | 0 | . | . | . | . | ||
SMS is a Super FX instruction that stores a value to the Game Pak.
The selectable RAM address must be an even number between 0 and 510.
The number of cycles varies because of the RAM buffer.
The ALT0 state is restored.
Syntax
SMS (yy), Rn
Example
Let:
R11 = abcdh RAMBR = 71h
After executing this program:
Syntax Opcode SMS (194h), R11 3e ab ca
We have:
(71:0194h) = cdh (71:0195h) = abh
See Also
External Links
- Official Nintendo documentation on SMS: 9.82 on page 2-9-113 of Book II
- example: Page 2-9-114, lbid.