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STB (Super FX): Difference between revisions
From SnesLab
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'''STB''' (Store Byte) is a [[Super FX]] instruction that stores the low byte of the [[source register]] to the [[Game Pak]]. | '''STB''' (Store Byte) is a [[Super FX]] instruction that stores the low byte of the [[source register]] to the [[Game Pak]]. | ||
The operand may be any register from R<sub>0</sub> to R<sub>11</sub>. | The operand may be any register from R<sub>0</sub> to R<sub>11</sub>. The number of cycles can vary because of the [[RAM buffer]]. | ||
==== Syntax ==== | ==== Syntax ==== | ||
Revision as of 22:58, 8 July 2024
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | ROM Speed | RAM Speed | Cache Speed | ||
| 3D3m | 2 bytes | 6 to 9 cycles | 8 to 14 cycles | 2 to 5 cycles | |||
| Flags Affected | ||||||||
|---|---|---|---|---|---|---|---|---|
| B | ALT1 | ALT2 | O/V | S | CY | Z | ||
| 0 | 0 | 0 | . | . | . | . | ||
STB (Store Byte) is a Super FX instruction that stores the low byte of the source register to the Game Pak.
The operand may be any register from R0 to R11. The number of cycles can vary because of the RAM buffer.
Syntax
STB (Rm)
See Also
External Links
- Official Super Nintendo development manual on STB: 9.83 on page 2-9-115