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LMULT (Super FX): Difference between revisions
From SnesLab
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=== External Links === | === External Links === | ||
# Official Nintendo documentation on LMULT: [https://archive.org/details/SNESDevManual/book2/page/n229 page 2-9-73 of Book II] | # Official Nintendo documentation on LMULT: 9.52 on [https://archive.org/details/SNESDevManual/book2/page/n229 page 2-9-73 of Book II] | ||
# example: [https://archive.org/details/SNESDevManual/book2/page/n230 page 2-9-74 of Book II], lbid. | # example: [https://archive.org/details/SNESDevManual/book2/page/n230 page 2-9-74 of Book II], lbid. | ||
# [https://archive.org/details/SNESDevManual/book2/page/n155 page 2-8-16 of Book II], lbid. | # [https://archive.org/details/SNESDevManual/book2/page/n155 page 2-8-16 of Book II], lbid. | ||
Revision as of 19:12, 1 July 2024
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Opcode | Length | ROM Speed | RAM Speed | Cache Speed | |||
| 3D9F | 2 bytes | 10 or 14 cycles | 10 or 14 cycles | 5 or 9 cycles | |||
| Flags Affected | ||||||||
|---|---|---|---|---|---|---|---|---|
| B | ALT1 | ALT2 | O/V | S | CY | Z | ||
| 0 | 0 | 0 | . | |||||
LMULT is a signed multiplication Super FX instruction. The exact speed depends on the state of the CFGR register.
LMULT utilizes the 8-bit multiplier four times.[3]
LMULT shares its multiplication circuit with FMULT.
See Also
External Links
- Official Nintendo documentation on LMULT: 9.52 on page 2-9-73 of Book II
- example: page 2-9-74 of Book II, lbid.
- page 2-8-16 of Book II, lbid.