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DSP1/Multiply: Difference between revisions
From SnesLab
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* paragraph 6.1 on [https://archive.org/details/SNESDevManual/book2/page/n324 page 3-6-1 of Book II], lbid. | * paragraph 6.1 on [https://archive.org/details/SNESDevManual/book2/page/n324 page 3-6-1 of Book II], lbid. | ||
* https://github.com/bsnes-emu/bsnes/blob/master/bsnes/sfc/coprocessor/dsp1/dsp1emu.cpp#L279 | * https://github.com/bsnes-emu/bsnes/blob/master/bsnes/sfc/coprocessor/dsp1/dsp1emu.cpp#L279 | ||
* https://github.com/bsnes-emu/bsnes/blob/master/bsnes/sfc/coprocessor/dsp4/dsp4emu.c#L141 | |||
[[Category:DSP1]] | [[Category:DSP1]] | ||
Revision as of 00:34, 5 January 2024
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Opcode | 00 | ||||||
| Speed | 26 cycles
3.4 μs | ||||||
Multiply is a DSP1 command that performs a 16-bit multiplication.
Input Parameters
- K is the multiplicand
- I is the multiplier
Output Parameter
- M is the product
References
- subparagraph 5.1.1 on Page 3-5-1 of Book II of the official Super Nintendo development manual
- paragraph 6.1 on page 3-6-1 of Book II, lbid.
- https://github.com/bsnes-emu/bsnes/blob/master/bsnes/sfc/coprocessor/dsp1/dsp1emu.cpp#L279
- https://github.com/bsnes-emu/bsnes/blob/master/bsnes/sfc/coprocessor/dsp4/dsp4emu.c#L141