We've just updated MediaWiki and its underlying software. If anything doesn't look or work quite right, please mention it to us. --RanAS
DSP1: Difference between revisions
From SnesLab
(→External Links: another snescentral link) |
(→External Links: Wikipedia) |
||
| Line 46: | Line 46: | ||
# https://problemkaputt.de/fullsnes.htm#snescartdspnst010st011biosfunctions | # https://problemkaputt.de/fullsnes.htm#snescartdspnst010st011biosfunctions | ||
# https://snescentral.com/chips.php?chiptype=DSPx | # https://snescentral.com/chips.php?chiptype=DSPx | ||
# https://en.m.wikipedia.org/wiki/NEC_%C2%B5PD7720 | |||
Revision as of 04:28, 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
- https://en.m.wikipedia.org/wiki/NEC_%C2%B5PD7720