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UMULT (Super FX): Difference between revisions
From SnesLab
(→See Also: LMULT) |
(8-bit multiplier) |
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'''UMULT''' is an unsigned multiplication [[Super FX]] instruction. The product is stored in the [[destination register]]. | '''UMULT''' is an unsigned multiplication [[Super FX]] instruction. The product is stored in the [[destination register]]. | ||
UMULT utilizes the 8-bit multiplier only once, so it is fast.<sup>[2]</sup> | |||
=== See Also === | === See Also === | ||
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=== External Links === | === External Links === | ||
# Official Nintendo documentation on UMULT: [https://archive.org/details/SNESDevManual/book2/page/n278 Page 2-9-122 of Book II] | |||
# https://archive.org/details/SNESDevManual/book2/page/n155 | |||
[[Category:ASM]] | [[Category:ASM]] | ||
Revision as of 12:17, 22 December 2023
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Opcode | Length | ROM Speed | RAM Speed | Cache Speed | |||
| 3D8n | 2 bytes | 6 or 8 cycles | 6 or 8 cycles | 2 or 3 cycles | |||
| Flags Affected | ||||||||
|---|---|---|---|---|---|---|---|---|
| B | ALT1 | ALT2 | O/V | S | CY | Z | ||
| 0 | 0 | 0 | . | . | ||||
UMULT is an unsigned multiplication Super FX instruction. The product is stored in the destination register.
UMULT utilizes the 8-bit multiplier only once, so it is fast.[2]
See Also
External Links
- Official Nintendo documentation on UMULT: Page 2-9-122 of Book II
- https://archive.org/details/SNESDevManual/book2/page/n155