Re: PicoMEM : Pi Pico on ISA, with full Memory and I/O bus access

Posted on Yesterday, 04:45

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by polpo

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Didn't PCMCIA lack DMA support, though? (The original 16-bit standard, not counting 32-bit CardBus.) I guess it could still support non-DMA sound devices such as Adlib, Disney Sound Source, CMS and Tandy/PCjr 3 voice. Yes, PCMCIA lacks DMA but there is a DMA emulation technique used by IBM on their …

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Re: TinyLlama 3

Posted on Yesterday, 04:15

by

by polpo

in Marvin \ System Specs

in Marvin \ System Specs

- Using an op amp for analog mixing of the two audio sources looks like an op amp not really needed for this simple mixing Hi, PicoGUS creator here. Super cool to see this project as well as the LlamaBlaster, they have the perfect amount of audaciousness. 😁 Can't believe I didn't know about them …

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Re: PicoGUS: ISA sound card emulator with Raspberry Pi Pico (Gravis Ultrasound, AdLib, MPU-401, Tandy, CMS)

Posted on 2024-05-20, 16:06

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by polpo

in Marvin \ Sound

in Marvin \ Sound

scroeffie wrote on 2024-05-20, 16:05: he is selling the card with out the midi cable why is that ? https://www.serdashop.com/PicoGUS He includes the MIDI adapter. The addon is for a 1.5m DIN5-to-DIN5 cable.

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Re: PicoGUS: ISA sound card emulator with Raspberry Pi Pico (Gravis Ultrasound, AdLib, MPU-401, Tandy, CMS)

Posted on 2024-05-20, 16:00

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by polpo

in Marvin \ Sound

in Marvin \ Sound

The next firmware release will enable MPU-401 simultaneous with the other modes. Note that this means that any modes that use an IRQ like GUS or SB won't be able to use MPU interrupts, i.e. anything with a "1" on this list will have to use MPU-only mode: https://github.com/bjt42/softmpu/wiki/ …

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Re: PicoGUS: ISA sound card emulator with Raspberry Pi Pico (Gravis Ultrasound, AdLib, MPU-401, Tandy, CMS)

Posted on 2024-05-17, 19:52

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by polpo

in Marvin \ Sound

in Marvin \ Sound

any resellers in europe ? I'm happy to announce that Serdaco will be selling the PicoGUS in Europe soon at https://www.serdashop.com/ ! I try to download Ultrasound installation files from github page and I am redirected to https://picog.us/. Is it possible to download this archive from somewhere …

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Re: PicoGUS: ISA sound card emulator with Raspberry Pi Pico (Gravis Ultrasound, AdLib, MPU-401, Tandy, CMS)

Posted on 2024-05-07, 20:53

by

by polpo

in Marvin \ Sound

in Marvin \ Sound

FYI I am starting to partner with "official" sellers of PicoGUS that I will link from the project homepage and my own Tindie page (my goal is to get out of selling them myself eventually). The first one I have partnered with is Joe's Computer Museum. He is US based but ships internationally, and he …

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Re: PicoGUS: ISA sound card emulator with Raspberry Pi Pico (Gravis Ultrasound, AdLib, MPU-401, Tandy, CMS)

Posted on 2024-04-16, 17:55

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by polpo

in Marvin \ Sound

in Marvin \ Sound

It's been a bit too long since my last batch but I wouldn't exactly say the cards are unobtanium. Between myself and https://jcm-1.com/ we have 1000 cards currently in production that will be available in the next few weeks. Getting more sellers lined up outside of the US is in the works as well. …

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Re: PicoGUS: ISA sound card emulator with Raspberry Pi Pico (Gravis Ultrasound, AdLib, MPU-401, Tandy, CMS)

Posted on 2024-04-15, 02:47

by

by polpo

in Marvin \ Sound

in Marvin \ Sound

TBD if it can run alongside other firmwares. WiFi uses a lot of RAM and requires its own IRQ so that will limit the other emulations it can coexist with. It may be possible to have a custom ne2000 packet driver that can multiplex the IRQ with the sound card but it's probably not going to be perfect …

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Re: PicoGUS: ISA sound card emulator with Raspberry Pi Pico (Gravis Ultrasound, AdLib, MPU-401, Tandy, CMS)

Posted on 2024-04-15, 00:24

by

by polpo

in Marvin \ Sound

in Marvin \ Sound

So here's something that's not possible on the PicoGUS 2.0 card, but is on the 1.x cards as well as the Femto: WiFi. Thanks to yyzkevin again, NE2000 emulation is working on the PicoGUS with a Pico-W. It'll still be a while before it's polished: it'll need support from pgusinit to set the SSID and …

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Re: PicoGUS: ISA sound card emulator with Raspberry Pi Pico (Gravis Ultrasound, AdLib, MPU-401, Tandy, CMS)

Posted on 2024-04-09, 22:36

by

by polpo

in Marvin \ Sound

in Marvin \ Sound

Covox would be trivially easy and kind of why I haven't done it, it's so simple it almost doesn't deserve its own firmware mode. 😅 I'd probably want to also support Disney Sound Source which is a little bit more complex.

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Re: PicoGUS: ISA sound card emulator with Raspberry Pi Pico (Gravis Ultrasound, AdLib, MPU-401, Tandy, CMS)

Posted on 2024-04-03, 14:15

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by polpo

in Marvin \ Sound

in Marvin \ Sound

With the wavetable header, the only thing I use extra GPIOs for on the 2.0 board is for software control of the wavetable volume. Volume control with a regular stereo potentiometer is possible, and it's what I do on the ISA adapter for the "Femto" PicoGUS (see attached image). Once you figure out a …

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Re: PicoGUS: ISA sound card emulator with Raspberry Pi Pico (Gravis Ultrasound, AdLib, MPU-401, Tandy, CMS)

Posted on 2024-04-02, 14:18

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by polpo

in Marvin \ Sound

in Marvin \ Sound

Hi all! I built a V1.2 board and it's been awesome, I particularly enjoyed playing Prince of Persia with a PS4 controller on an 8088 system (SB/ Adlib firmware). But I am running into an odd issue, I can't get a single floppy controller to work properly , I tried multiple controllers on MBs ranging …

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Re: PicoGUS: ISA sound card emulator with Raspberry Pi Pico (Gravis Ultrasound, AdLib, MPU-401, Tandy, CMS)

Posted on 2024-03-31, 04:01

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by polpo

in Marvin \ Sound

in Marvin \ Sound

Thanks to a very helpful member here on Vogons I now have a board with the SiS 85C471 chipset to test. In the demo Crystal Dream II, digistorm reported that the music would stop semi-randomly a few minutes into the demo, and lisabadcat reported that it would freeze completely at the sound card …

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Re: PicoGUS: ISA sound card emulator with Raspberry Pi Pico (Gravis Ultrasound, AdLib, MPU-401, Tandy, CMS)

Posted on 2024-03-28, 14:11

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by polpo

in Marvin \ Sound

in Marvin \ Sound

Overall the balance is pretty great actually. It seems to work with in game controls that support it as well which is good. Excited to see what is coming up next for picogus and also the SB firmware. Looks like you might also be trying to get MPU running next to these / with other firmwares as well …

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Re: PicoGUS: ISA sound card emulator with Raspberry Pi Pico (Gravis Ultrasound, AdLib, MPU-401, Tandy, CMS)

Posted on 2024-03-28, 02:20

by

by polpo

in Marvin \ Sound

in Marvin \ Sound

I did some testing with pg-sb.uf2. Works perfectly so far! War2, Doom, Duke3d, Sierra games all work as expected. Super cool! Thank's Kevin! Any idea if normal soundblaster 2 volume tools will work to balance out sb and adlib, or will there need to be an option in pgusinit for something like that? …

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Re: PicoGUS: ISA sound card emulator with Raspberry Pi Pico (Gravis Ultrasound, AdLib, MPU-401, Tandy, CMS)

Posted on 2024-03-28, 01:14

by

by polpo

in Marvin \ Sound

in Marvin \ Sound

I've just released PicoGUS firmware v1.2.0 and with it brings Sound Blaster 2.0 emulation. https://github.com/polpo/picogus/releases/tag/v1.2.0 Changelog: Sound Blaster 2.0 emulation: The AdLib mode (pg-adlib.uf2) has been replaced with a new Sound Blaster 2.0 mode (pg-sb.uf2)! Code to emulate the …

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Re: PicoGUS: ISA sound card emulator with Raspberry Pi Pico (Gravis Ultrasound, AdLib, MPU-401, Tandy, CMS)

Posted on 2024-03-28, 01:11

by

by polpo

in Marvin \ Sound

in Marvin \ Sound

Thanks for uploading the new firmware. Unfortunately for me the Dope demo crashes back to the desktop half way through it worked fine on the last firmware. Anyone else had the same issue? Interesting, I haven't seen Dope actually crash, just have music playback hang. Since Dope is being forced to …

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Re: PicoGUS: ISA sound card emulator with Raspberry Pi Pico (Gravis Ultrasound, AdLib, MPU-401, Tandy, CMS)

Posted on 2024-03-19, 18:52

by

by polpo

in Marvin \ Sound

in Marvin \ Sound

Glad to hear it works without running pgusinit. When pgusinit runs in MPU-401 mode, the card re-inits the MPU-401 emulation with the sysex delay and fake-all-notes-off settings (neither of which you'd need with a SC-55MK2). There's a chance there's some kind possible hang when re-initing, I'll take …

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Re: PicoGUS: ISA sound card emulator with Raspberry Pi Pico (Gravis Ultrasound, AdLib, MPU-401, Tandy, CMS)

Posted on 2024-03-19, 05:32

by

by polpo

in Marvin \ Sound

in Marvin \ Sound

PicoGUS firmware v1.1.0 is released and is available at https://github.com/polpo/picogus/releases/tag/v1.1.0. Changelog: GUS emulation: Works around a hardware bug in the PCM510xA DAC that results in ~10% of chips to be silent at 22.05kHz sampling rate. This is the rate produced by the GUS at 28 …

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Re: PicoGUS: ISA sound card emulator with Raspberry Pi Pico (Gravis Ultrasound, AdLib, MPU-401, Tandy, CMS)

Posted on 2024-03-15, 20:04

by

by polpo

in Marvin \ Sound

in Marvin \ Sound

In a nutshell, Gravis's PLAYMIDI doesn't work reliably. It's marked as "not working" in the compatibility list: https://github.com/polpo/picogus/wiki/Compati … t#music-players

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