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DSP1
From SnesLab
(Redirected from DSP-1)
DSP1 in an enhancement chip with part number 22943 that implements common 3D math operations.
The DSP1 has registers named DR and SR. DR is mapped on the A Bus.
The following commands are supported:
- Attitude
- Distance
- Gyrate
- Inverse
- Multiply
- Objective
- Parameter
- Polar
- Project
- Radius
- Range
- Raster
- Rotate
- Scalar
- Subjective
- Target
- 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
- https://en.m.wikipedia.org/wiki/NEC_%C2%B5PD7720