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v0.5.0
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@polpo polpo released this 21 Feb 19:49
· 195 commits to main since this release
v0.5.0
7f05ae1

General:

  • More reliable firmware flashing from pgusinit by clocking down the Pico and disabling interrupts. Many thanks to JazeFox at Vogons for debugging this issue and suggesting a fix.

Tandy emulation:

  • New emulation mode: Tandy 3-Voice. This emulation is on port 2C0h by default, to avoid conflicts or masked IO on the default Tandy port of 0C0h in non-Tandy systems. This is the same alternate port that Matze79's "TNDY" card can use. Use the TNDY driver program to redirect port 0C0h to 2C0h. Also many games need to be patched to allow for Tandy sound on non-Tandy systems with CGA, EGA, or VGA graphics. Note that this mode has not received much optimization, so accuracy and compatibility can be improved.

GUS emulation:

  • Resets DMA status bit to 0 on completion of DMA handler. Fixes some Demoscene titles.
  • Buffers uploaded DMA samples instead of writing 1 byte at a time. Currently this buffer is 8 bytes, and may be configurable in future releases. Should help stuttering/slowdown issues in games that use streaming DMA audio like Doom.
  • Bails out on sound rendering when sample rate changes. This should eliminate any "warbling" sounds when Impulse Tracker resets the channel count on the fly.
  • Uses the RP2040 hardware interpolation unit to interpolate samples and clamp output to 16 bits.

For known issues, please see the Compatibility List wiki page.

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