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

Posted on 2024-05-08, 19:20

by

by Delphius

in Marvin \ Sound

in Marvin \ Sound

Hey everyone, Forgive me if this has been covered previously but I recently had 5 boards made for the PicoGus and have so far assembled 1. I had a ton of problems getting it to work initially. It was of course because of my still-developing solder skills for SMD/SMT components. I did get it working …

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Re: Roland MT-32 Buffer overflow Hardware Fix

Posted on 2024-04-16, 04:15

by

by Delphius

in Marvin \ Sound

in Marvin \ Sound

I had this thought tonight and wondered if it was possible. Thanks for answering the question! Any progress with this?

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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, 02:24

by

by Delphius

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 2024-03-29, 02:31

by

by Delphius

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, 03:23

by

by Delphius

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, 02:03

by

by Delphius

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 2024-03-03, 03:34

by

by Delphius

in Marvin \ Sound

in Marvin \ Sound

Just got my PicoGUS. Ultrasound firmware is working pefectly! When I load the MP401 firmware and run GPUSINIT, it just freezes. I've removed all the sound cards from the motherboard but still have the same issue. Any idea what may be the issue? IMG_4605.JPG Maybe an IRQ conflict or something? Any …

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Re: MT32 Display Mod / sed1200emu

Posted on 2024-02-15, 18:37

by

by Delphius

in MT-32 General

in MT-32 General

Second possible issue is that there are about 6 single pins available on the backpack PCB that are labeled SCK0, SCK, MISO, MISO0, MOSIO, MOSI that I am not sure are required or not for function. The project page does not mention anything about these, or where they might patch to the MT32 if …

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

Posted on 2024-02-10, 21:59

by

by Delphius

in Marvin \ Sound

in Marvin \ Sound

Hey polpo, I am finishing up on building a v1.2 board and I have a quick question about R7 and R8. These are listed on the BOM list for the DAC module, but it seems like they are actually used for the integrated DAC? I just want to verify before adding them and installing the DAC module overtop of …

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

Posted on 2024-02-10, 20:42

by

by Delphius

in Marvin \ Sound

in Marvin \ Sound

Hey polpo, I am finishing up on building a v1.2 board and I have a quick question about R7 and R8. These are listed on the BOM list for the DAC module, but it seems like they are actually used for the integrated DAC? I just want to verify before adding them and installing the DAC module overtop of …

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MT32 Display Mod / sed1200emu

Posted on 2024-02-09, 16:56

by

by Delphius

in MT-32 General

in MT-32 General

Hello Vogons, I became interested it MT32 display replacements a while back but have only found a few mentions here and there about any current projects. I have ran across this sed1200emu project a few times but there is very little information and documentation about it. http://sensi.org/~tnt23/ …

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

Posted on 2024-01-22, 23:18

by

by Delphius

in Marvin \ Sound

in Marvin \ Sound

I have been scrolling around aliexpress looking at different spdif / I2S converters options for various projects I have been playing around with. Thought I might share some interesting modules and chips that might be useful for PicoGUS. This I2S sample converter, the SRC4192I might be useful to …

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

Posted on 2024-01-22, 17:25

by

by Delphius

in Marvin \ Sound

in Marvin \ Sound

I have been scrolling around aliexpress looking at different spdif / I2S converters options for various projects I have been playing around with. Thought I might share some interesting modules and chips that might be useful for PicoGUS. This I2S sample converter, the SRC4192I might be useful to have …

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

Posted on 2024-01-18, 04:02

by

by Delphius

in Marvin \ Sound

in Marvin \ Sound

The RP2040 has 3.3v IO, and I didn't want to add an extra bus transceiver chip to convert up from 3.3V to 5V. If there are no conflicts (and to be quite honest, no card should be relied on to work if there are conflicts), 3.3V signalling works just fine. I'm thinking of adding some extra checks to …

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

Posted on 2024-01-18, 00:07

by

by Delphius

in Marvin \ Sound

in Marvin \ Sound

The RP2040 has 3.3v IO, and I didn't want to add an extra bus transceiver chip to convert up from 3.3V to 5V. If there are no conflicts (and to be quite honest, no card should be relied on to work if there are conflicts), 3.3V signalling works just fine. I'm thinking of adding some extra checks to …

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

Posted on 2024-01-17, 17:03

by

by Delphius

in Marvin \ Sound

in Marvin \ Sound

As for how addresses or IRQs prioritize, they don't really. Whatever device can answer first or drive the ISA data lines more strongly might "win" but the more likely scenario is garbage on the bus. Since the PicoGUS does address decoding in software and is slightly slower than hardware, and is …

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

Posted on 2024-01-16, 21:48

by

by Delphius

in Marvin \ Sound

in Marvin \ Sound

Interesting and I'm glad you figured out the issue! I never thought to ask if you had any other sound cards in the system. It looks like closing JP10 on the CT2290 can disable the MPU port and JP11 can move it to port 300h. Thanks for the tips with the jumpers. This card is a weird almost but not …

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

Posted on 2024-01-16, 19:25

by

by Delphius

in Marvin \ Sound

in Marvin \ Sound

That's a new one to me – what system (mobo chipset & CPU) are you using? I did notice this thead saying some Sierra games don't work in MT-32 mode on fast systems, maybe that's the issue you have? Tonight I tried SQ3 and QFG1 with MT-32 on several systems of varying speeds (Pentium 120 w/ 430FX, K6 …

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

Posted on 2024-01-16, 18:52

by

by Delphius

in Marvin \ Sound

in Marvin \ Sound

I ran into a new problem tonight with MPU emulation. Went to play around with some MT32 games like SQ3, QFG1, and Monkey Island and found that the midi did not work for them. For the Sierra games the computer locks on the game start up. I see one small blip of input to my MT32 at the very beginning …

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

Posted on 2024-01-16, 18:37

by

by Delphius

in Marvin \ Sound

in Marvin \ Sound

Just out of curiosity I went and tested my v2 board midi capabilities first time. No issues whatsoever with Monkey I and SQ3 on my K6-II@280MHZ SS7 MB with SIS530 chipset. L1 and L2 caches enabled. However SIS530 might be unique because I also do not have any issues running speed sensitive games …

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