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DSP1/Inverse: Difference between revisions

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=== References ===
=== References ===
* [https://archive.org/details/SNESDevManual/book2/page/n292 page 3-5-2 of Book II] of the official Super Nintendo development manual
* subparagraph 5.1.2 on [https://archive.org/details/SNESDevManual/book2/page/n292 page 3-5-2 of Book II] of the official Super Nintendo development manual
* paragraph 6.2 on [https://archive.org/details/SNESDevManual/book2/page/n324 page 3-6-1 of Book II], lbid.
* paragraph 6.2 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#L305


[[Category:DSP1]]
[[Category:DSP1]]
[[Category:General Calculation Commands]]

Latest revision as of 04:32, 11 January 2024

Basic Info
Opcode 10
Speed 98 cycles

12.9 μs

Inverse is a DSP1 command that calculates a floating point multiplicative inverse (reciprocal).

Input Parameters

  • a[M] is the coefficient
  • b[C] is the exponent (in the range 8002 to 7FFFh)

The total input value is then a*2^b

Output Parameters

  • A[M] is the coefficient
  • B[C] is the exponent (in the range 8002 to 7FFFh)

References