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SM (Super FX): Difference between revisions
From SnesLab
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==== Example ==== | |||
Let: | |||
R<sub>4</sub> = 438ch | |||
RAMBR = 70h | |||
After executing SM (0b492h), R<sub>4</sub>: | |||
(70:b492h) = 8ch | |||
(70:b493h) = 43h | |||
=== See Also === | === See Also === | ||
Revision as of 00:19, 10 July 2024
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | ROM Speed | RAM Speed | Cache Speed | ||
| 3EFnxxxx | 4 bytes | 12 to 17 cycles | 16 to 20 cycles | 4 to 9 cycles | |||
| Flags Affected | ||||||||
|---|---|---|---|---|---|---|---|---|
| B | ALT1 | ALT2 | O/V | S | CY | Z | ||
| 0 | 0 | 0 | . | . | . | . | ||
SM is a Super FX instruction that stores a value to the Game Pak.
The number of cycles varies because of the RAM buffer.
Syntax
SM (xx), Rn
Example
Let:
R4 = 438ch RAMBR = 70h
After executing SM (0b492h), R4:
(70:b492h) = 8ch (70:b493h) = 43h
See Also
External Links
- Official Nintendo documentation on SM: 9.81 on page 2-9-112 of Book II