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

Posted on 2025-03-23, 12:01

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by MJay99

in Marvin \ Sound

in Marvin \ Sound

pgusinit detects and shows resources just fine, and I got FX sounds in all the games. But I got absolutely no General MIDI, MPU-401 or Ultra Gus music in any games :( Just a basic verification: Is there an e.g. ULTRADIR=C:\ULTRASND variable set and pointing to the gus software directory containing …

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Re: Convert old ASUS ASC boardviews to KICAD PCB!

Posted on 2025-02-15, 18:50

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by MJay99

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I really didn't expect to be of much help with that, but oh well, didn't hurt :) And I can well imagine the work against a blackbox - did at least do it with a 44 pin IC on a partly available schematic a while ago, but ended up really having to guess a few pins (somewhat educated guessing and …

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Re: Convert old ASUS ASC boardviews to KICAD PCB!

Posted on 2025-02-15, 18:21

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by MJay99

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

No idea if that might be something you're looking for - in this thread Fixing ASUS P2B freezes on memtest86+ modulo 20 test it's mentioned that it might be a clone of a W83781D, which has a datasheet available on the net.

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Re: Convert old ASUS ASC boardviews to KICAD PCB!

Posted on 2025-02-15, 15:49

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by MJay99

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

It's a great feat! I guess it might just take a while for someone to be needing this and stumble across this thread. I'm personally (and maybe only currently) just not really in any need of these boards in KiCAD (since I'm more playing with my own projects), but I'm lifting my hat and certainly …

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Re: YMF-289B - Does anyone know where to get one for a reasonable price?

Posted on 2025-01-22, 18:59

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by MJay99

in Marvin \ Sound

in Marvin \ Sound

They were used on the Orpheus I project - before that, they were quite cheap and afterwards things went to the YMF-262M with prices skyrocketing. Maybe prices might return to more normal realms over time, with that demand now removed, but who knows... I was using the YMF-289B before, also, but …

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Re: The thing no one asked for: KICAD 440bx reference schematic

Posted on 2024-11-24, 11:31

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by MJay99

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

v9 is probably going to be released early in 2025 (January / February), after that it shouldn't be an issue anymore: https://indico.cern.ch/event/1423279/contributions/5986284/attachments/2877837/5040325/20240614_KiCad_Roadmap_2024.pdf. You can also install both stable and nightly without them …

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Re: Using a CS4237b in conjunction with a YFM262 chip and EEPROM

Posted on 2024-10-16, 18:26

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by MJay99

in Marvin \ Sound

in Marvin \ Sound

Mine. And since he's the resident OPL expert, I won't even doubt for a second that he's right. Only thing I can still say then, is: it's giving me more than nothing 😄 Maybe he can have a quick look at your schematic, too and find an issue which I didn't see. That's actually what I was hoping all the …

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Re: Using a CS4237b in conjunction with a YFM262 chip and EEPROM

Posted on 2024-10-16, 08:39

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by MJay99

in Marvin \ Sound

in Marvin \ Sound

Thanks, Tiido, I've removed that excerpt (it does work for me, though).

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Re: Using a CS4237b in conjunction with a YFM262 chip and EEPROM

Posted on 2024-10-14, 17:38

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by MJay99

in Marvin \ Sound

in Marvin \ Sound

According to the datasheet for the YMF262, pin 3 is /IC 'initial clear', which should be held low for 400/F(requency) seconds. So, seeing it high a tiny bit after startup (and 4.6V should be really enough) is fine. Since the oscillator is still not verified, but really important (and there could be …

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Re: Using a CS4237b in conjunction with a YFM262 chip and EEPROM

Posted on 2024-10-12, 23:17

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by MJay99

in Marvin \ Sound

in Marvin \ Sound

I'd say, start with unisound, e.g. like this (it's probably all redundant information, but doesn't hurt to start from a shared baseline): https://www.vogons.org/viewtopic.php?p=833659#p833659 SET BLASTER=A220 I5 D1 (unless those are otherwise blocked and you can add more flags later) unisound /vf99 …

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Re: Gravis Ultrasound MAX rev 1.8 missing Y1 crystal

Posted on 2024-10-12, 17:08

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by MJay99

in Marvin \ Sound

in Marvin \ Sound

Probably just window shopping these days, but if you're in Russia: https://www.quartz1.com/price/model.php?akt=9199.03 Not sure if polpo still has some, or sold them off already on Ebay or Tindie by now: Re: Need help repairing a Gravis Ultrasound Classic 2.4!

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Re: Using a CS4237b in conjunction with a YFM262 chip and EEPROM

Posted on 2024-10-08, 22:58

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by MJay99

in Marvin \ Sound

in Marvin \ Sound

That's exactly where I was looking at also - but you're right, that shouldn't be able to cause a detection error indeed. And that error really seems to be a sign of something more upstream being wrong, because: I just tested Duke Nukem 3D with Soundblaster for Sound FX and either Adlib or …

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Re: ARGUS Project thread - Now with gerbers and documentation in initial post!

Posted on 2024-10-08, 19:07

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by MJay99

in Marvin \ Sound

in Marvin \ Sound

You could actually still get the MS6308 and AT93C66SC from UTSource. I did use the TS482IDT which is still available and found it working fine: https://www.vogons.org/viewtopic.php?p=739671#p739671 And Thermalwrong did post quite a bit about compatible 93C66 variants here: https://www.vogons.org/ …

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Re: Using a CS4237b in conjunction with a YFM262 chip and EEPROM

Posted on 2024-10-08, 18:28

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by MJay99

in Marvin \ Sound

in Marvin \ Sound

At a first quick glance, most of it (OPL -> YAC -> TL074) looks fine to me - and your RIN / LIN are going into the CS via capacitors, correct? But as much as I am not an expert on the analog part (so, a huge caveat emptor there): The output stage reminds me of a schematic I saw on an electronics …

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Re: Using a CS4237b in conjunction with a YFM262 chip and EEPROM

Posted on 2024-10-08, 10:51

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by MJay99

in Marvin \ Sound

in Marvin \ Sound

Well, if the CSFM works, but the external OPL doesn't, there's quite a bit to question and check - it's basically what all this idea was about :) The first and easiest thing I could think of is: where does the output of the OPL chain go? Does it route back into the CS4237, or does it get mixed into …

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Re: Using a CS4237b in conjunction with a YFM262 chip and EEPROM

Posted on 2024-10-07, 08:13

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by MJay99

in Marvin \ Sound

in Marvin \ Sound

No worries, these things happen :) Were you able you rewire and program the eeprom? If it's running without at the moment, it'll work to some extend in a default state and can and needs to be setup by the driver, if I remember correctly. Just curious: are other games also not working with FM and OPL …

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Re: Using a CS4237b in conjunction with a YFM262 chip and EEPROM

Posted on 2024-10-06, 20:47

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by MJay99

in Marvin \ Sound

in Marvin \ Sound

Which model is your EEPROM? The 24LC16 I was using does have a fundamentally different pinout (e.g. pin 5 being SDA, pin 6 being SCL): Filename 24lc16.jpg File size 20.63 KiB Views 577 views File license CC-BY-4.0 Edit: The rest looks identical to mine.

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Re: Using a CS4237b in conjunction with a YFM262 chip and EEPROM

Posted on 2024-10-06, 18:13

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by MJay99

in Marvin \ Sound

in Marvin \ Sound

Did you try force the control address in resource.exe? As far as I remember, it always worked by simply invoking resource.exe, pressing Alt+A and using the default address. Just had a quick look on how it looked on my side: Do you have pull-ups to VCC on SDA / SCL? Connecting SDA & SCL to both the …

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

Posted on 2024-08-16, 15:18

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by MJay99

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I don't have this card or bracket, but I'm guessing it might be the overlapping parts of the case's slot that would be getting in the way of the connectors, if they're not bent away 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 2024-07-22, 14:56

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by MJay99

in Marvin \ Sound

in Marvin \ Sound

Thanks for pointing this out, I was curious if the 16MB version could have any uses for things the 2MB version can't support. Can't really say for the PicoGUS, but it did for a modified rp2040-doom's VGA board, that I wanted to build and had to adapt for these :) I'm guessing that the PicoGUS is a …

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