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DSP1: Difference between revisions
From SnesLab
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# [https://archive.org/details/SNESDevManual/book2/page/n281 Page 3-1-2], lbid. | # [https://archive.org/details/SNESDevManual/book2/page/n281 Page 3-1-2], lbid. | ||
# https://problemkaputt.de/fullsnes.htm#snescartdspnst010st011biosfunctions | # https://problemkaputt.de/fullsnes.htm#snescartdspnst010st011biosfunctions | ||
# https://snescentral.com/chips.php?chiptype=DSPx | |||
Revision as of 04:23, 10 January 2024
DSP1 in an enhancement chip with part number 22943 that implements common 3D math operations.
The DSP1 has registers named DR and SR.
The following commands are supported:
- DSP1/Attitude
- DSP1/Distance
- DSP1/Gyrate
- DSP1/Inverse
- DSP1/Multiply
- DSP1/Objective
- DSP1/Parameter
- DSP1/Polar
- DSP1/Project
- DSP1/Radius
- DSP1/Range
- DSP1/Raster
- DSP1/Rotate
- DSP1/Scalar
- DSP1/Subjective
- DSP1/Target
- DSP1/Triangle
The microcode implementing them is in the DSP1's internal ROM.
The DSP1 hardware supports DMA, but the SNES does not have a way to kick it off. [2]
In Figure 3-1-1 of the manual, the connection between the DSP1 chip and the 62-pin cartridge slot incorrectly appears outside the game pak.[3]
See Also
External Links
- https://snescentral.com/article.php?id=1239
- paragraph 4.4 on page 3-4-2 of Book II of the official Super Nintendo development manual
- Page 3-1-2, lbid.
- https://problemkaputt.de/fullsnes.htm#snescartdspnst010st011biosfunctions
- https://snescentral.com/chips.php?chiptype=DSPx