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@github-actions github-actions released this 15 Nov 23:36
· 59 commits to main since this release
v1.0.0
49e2a45

The PicoGUS 2.0 hardware brings v1.0.0 of the PicoGUS firmware! This firmware runs on all released revisions of the PicoGUS hardware: 1.1, 1.1.1, 1.2, and 2.0.

New features/fixes

General:

  • Support for PicoGUS 2.0 hardware and its software-controlled wavetable header volume (/v xxx pgusinit option).
  • A preview of game port joystick emulation using USB joysticks is included in all sound card emulation modes, enabled with the /j pgusinit option. There is also a "joystick exclusive" firmware (pg-joyex.uf2) for when you only want to use a USB joystick and not emluate any sound cards. This is considered a preview because only a few USB joystick types are supported: wired Xbox 360 (and third party clone) controllers and the Sony DualShock 4. More joysticks will be supported in the future! See the Compatibility List wiki page for more information about this feature.
  • Much more reliable firmware flashing from DOS. The previous method abused IOCHRDY to hold the ISA bus far longer than usual, and some chipsets would release the bus before certain flash operations were complete.
  • A more robust startup sequence to improve firmware boot stability. All firmwares have the same LED sequence when starting so you will know when the firmware is ready.
  • Compatibility with slower PSRAM chips that are rated for only 104MHz, such as the Vilsion Tech VTI7064MSME and ISSI IS66WVS1M8BLL-104NLI. This widens available options for those DIYing their own PicoGUS boards.

pgusinit

pgusinit has been updated to version v2.0.0, featuring:

  • Updates to pgusinit to support the new firmware flashing protocol, as well as support upgrading from v0.x.x firmware to v1.x.x firmware. If you have a v0.x.x version of firmware running on your PicoGUS, you can upgrade to v1.0.0 with the latest version of pgusinit included with the firmware release package.
  • Detects the current card mode and only shows options applicable to that mode when using /? to ask for help.

Adlib emulation:

  • Fixes an issue where some software would incorrectly detect PicoGUS as an OPL3 instead of an OPL2.

MPU-401 emulation:

  • Sysex delay can be enabled with the /s pgusinit option. This will prevent buffer overflows on older MPU-401 revisions.
  • Fake all-notes-off for the Roland RA-50 can be enabled with the /n pgusinit option.
  • Fixes song change issue in Frederik Pohl's Gateway. PicoGUS will detect when Gateway is running and enable a hack in how the version and ack are returned. Run pgusinit to restore default operation after you're done playing Gateway.
  • Running pgusinit will silence any stuck notes if a program exits unceremoniously.
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