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

Posted on 2024-08-16, 15:18

by

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

by

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

Posted on 2024-07-21, 09:37

by

by MJay99

in Marvin \ Sound

in Marvin \ Sound

Just adding to that: If someone wants to go that way, just be careful about the version you buy and try, especially the 16MB versions do have different pinouts. If someone wants to use those, this is their pin-out: Filename pico-16.jpg File size 40.29 KiB Views 1015 views File license CC-BY-4.0 …

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Re: HardMPU, anyone?

Posted on 2024-07-18, 19:34

by

by MJay99

in Marvin \ Sound

in Marvin \ Sound

Any hint on where you're at? Shipping from e.g. Europe to the US would probably be much more than the full order at JLCPCB 😉

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

Posted on 2024-07-04, 18:20

by

by MJay99

in Marvin \ Sound

in Marvin \ Sound

I actually thought to share it maybe some 2.5 years ago, but always found little things to improve or change (mostly due to parts availabilty) and then also saw marmes' and keropi's Orpheus II project, which I really didn't want to step on, as it's pretty much the same Interwave / CS4237B / OPL …

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

Posted on 2024-07-03, 22:00

by

by MJay99

in Marvin \ Sound

in Marvin \ Sound

interesting so would you run the left line through the other side of the IC? Exactly that, it's identical, just with labels for the left channel. It's not used for amplification here (though it'd be possible by adapting the feedback resistor), it's just only mixing the signals. And since the OPL …

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

Posted on 2024-07-03, 18:33

by

by MJay99

in Marvin \ Sound

in Marvin \ Sound

There might be better and maybe more HiFi ways, but this worked more than well enough for me: TL082.jpg If you run across another solution, please don't consider this a gold-standard idea and I'm always interested in other/ better ways. And maybe there'll be others who want to chime in on this, too.

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Re: UNISOUND - Universal ISA PnP Sound Card Driver for DOS v0.81b

Posted on 2024-07-01, 20:36

by

by MJay99

in Marvin \ Sound

in Marvin \ Sound

With the default settings (A220, I7, D1) for a Soundblaster as music / sfx device, it seems to work just fine on a CS4237B based soundcard here.

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

Posted on 2024-07-01, 19:24

by

by MJay99

in Marvin \ Sound

in Marvin \ Sound

Of course, here is the visual diff (after removing other testing parts, I actually found I didn't really change much in the end): pnp37.ini.diff.jpg This is using the PNP37.ini from the 'crystal_isa_audio_drivers.zip\EEPROM Resource\original' subdirectory of the above zip-file. Again, there might be …

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

Posted on 2024-06-30, 21:39

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by MJay99

in Marvin \ Sound

in Marvin \ Sound

I've built mine with an eeprom. SDA and SCL are connected to both the eeprom and YMF, with SCS being the Chip-Select for the YMF, afair. Here's the eeprom (please ignore the usage of global flags instead of local ones - this was my first ever project a few years ago and I didn't know better): 24LC16 …

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Re: UNISOUND - Universal ISA PnP Sound Card Driver for DOS v0.81b

Posted on 2024-06-30, 10:40

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by MJay99

in Marvin \ Sound

in Marvin \ Sound

Has someone ever made "Lemmings 2: The Tribes" work with both music and digital effects using this driver? One very important information is probably missing there: on which type of soundcard? 😉 Unisound itself is just used to initialize a card and not a TSR, so the issue might more be with the …

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Re: Help repair a faulty Roland LAPC-I

Posted on 2024-06-19, 21:37

by

by MJay99

in Marvin \ Sound

in Marvin \ Sound

You could also build (or buy) yourself one of these (or any variation of such), if you don't want to go hunting: https://www.philscomputerlab.com/voltage-blaster--5v.html

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

Posted on 2024-06-18, 21:27

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by MJay99

in Marvin \ Sound

in Marvin \ Sound

I have to admit, I haven't tried it so far, but I wouldn't really expect issues from the cards themselves, per se. I just don't think that pgusinit is able to separate them for initialization (yet...). It seems the GUS-fw might work without pgusinit if set to 240: https://www.vogons.org/viewtopic. …

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

Posted on 2024-06-18, 20:42

by

by MJay99

in Marvin \ Sound

in Marvin \ Sound

Not yet, as far as I know, but it might be coming: https://github.com/polpo/picogus/issues/43 and: Re: PicoGUS: ISA sound card emulator with Raspberry Pi Pico (Gravis Ultrasound, AdLib, MPU-401, Tandy, CMS)

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

Posted on 2024-06-16, 08:38

by

by MJay99

in Marvin \ Sound

in Marvin \ Sound

A missing DAC shouldn't damage anything and wouldn't even reflect back to the pico - there's just three outputs going there (LR, DIN, BCK). The only effect on the pico from the DAC-side I could imagine would be, if there were shorts in that area (e.g. from soldering) - but that's not how it looks …

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

Posted on 2024-05-10, 12:12

by

by MJay99

in Marvin \ Sound

in Marvin \ Sound

Have a look here: Re: Newly made Gravis Ultrasound compatible cards ... what's the degree of interest? The analogue part is in there. You can get the Interwave from the bay, albeit at scalper pricing.

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Re: Snark barker troubleshooting

Posted on 2024-05-02, 08:45

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by MJay99

in Marvin \ Sound

in Marvin \ Sound

Just had a quick look at what I was using about 5 years ago: those were AT89S51-24PU which came from mouser. And they're actually still available there: https://www.mouser.de/ProductDetail/556-A89S51-24PU

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Re: Looking for IBM Music Feature Card owners

Posted on 2024-04-13, 21:41

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by MJay99

in Marvin \ Sound

in Marvin \ Sound

florian3 wrote on 2024-04-13, 15:58: Thanks for the info. I don’t have anything slower than a 386 here. Will try to down clock that and see how it goes. Or stick to games. If you keep building, this could maybe solve it 😉 https://www.youtube.com/watch?v=g4OluJwGDEQ

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Re: The LlamaBlaster

Posted on 2024-02-19, 10:43

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by MJay99

in Marvin \ Sound

in Marvin \ Sound

Indeed, looks great! And you're mighty fast in your project! Took me weeks to finish my card two years back. I actually also tried converting my version into rounded tracks a few weeks ago and that instantly made the DRC and Kicad crash. That issue has been fixed by now, though :) On a side note, is …

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Re: What retro activity did you get up to today?

Posted on 2024-02-08, 19:34

by

by MJay99

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

vsharun wrote on 2024-02-07, 13:26: Maybe fellow Vogons members point me the way to get Y1 in PM ? Are Y3 should be always powered on ? You could also try and ask Ian Polpo if he happens to still have one: Re: Need help repairing a Gravis Ultrasound Classic 2.4!

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