Re: Making a MIDI daughterboard from scrap parts

Posted on Today, 03:30

by

by DerBaum

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

brunobox99 wrote on Today, 02:06: Good evening Der Baum, I found a Philips DA1311A, could this DAC work? Here is the datasheet. I dont know. But its worth a try. It looks promising from the datasheet.

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

Posted on Yesterday, 03:50

by

by DerBaum

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Here's how the front and back look close up, ignore the possibly shorting loose traces wires, those will get secured once I know things work. finished trace rebuild.jpg I see no reason why it shouldnt work. That looks great. :thumbsup: edit: Ok maybe i see a reason near JYEN jumper... traces seem …

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Re: Making a MIDI daughterboard from scrap parts

Posted on Yesterday, 03:38

by

by DerBaum

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

...OR using these chips as midi only with a DAC to convert the digital output... Hi, thanks for the suggestion, I was thinking more about using a DAC, because those cards you said are non-existant here. I think the Y1 component of the 1st photo is a crystal. What DAC chip could I use? I could try …

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Re: Making a MIDI daughterboard from scrap parts

Posted on Yesterday, 02:35

by

by DerBaum

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

maybe you could get a ESS ES1868F card with missing wavetable chips like this one for example : http://www.amoretro.de/2012/09/labway-ess-audiodrive-es1868f-pnp-isa-soundkarte.html That would be the option involving the least amount of work. If you have a look at the datasheet i have attached, you …

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Re: AST Premmia 4/66D Video RAM update

Posted on 2023-11-27, 19:44

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by DerBaum

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

tt0ny wrote on 2023-11-27, 17:43: let's see if worked with aliexpress so far never ordered anything through them. tt0ny I wish you good luck. May the loss be minimal. Holding my thumbs you get something remotely usable. Its like gambling but with even less chance of winning 😼

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

Posted on 2023-11-27, 19:09

by

by DerBaum

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I got some small carbide drill bits and a little hand drill last week. Today I spotted this sad PCB (still haven't got this fabricated as a new PCB yet...) and got some ideas given some recent posts with that floppy drive connector repair: i used the saw dust of the pcb as filler material for the …

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Re: Were low prices a part of the fun?

Posted on 2023-11-26, 11:26

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by DerBaum

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

For example, a $3000 high-end gaming rig back in 1999 is about the equivalent of $5500 today. Even spending $1000 today on that same rig, it's still 1/5th of what it would have originally cost. To be fair, all of the stuff we considered high tech back in the days was e-waste a short time later... …

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Re: Bought these (retro) hardware today

Posted on 2023-11-24, 08:49

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by DerBaum

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Some of the sellers for things i watch on ebay have a "black friday" sale. One seller was offering a sale on soundcards wich ended up costing 14,80 euros. I already have this exact soundcard and it is quite good with a real OPL inside and a super simple one chip design. My idea is to reverse …

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Re: sfloader - Command line soundfont loader for SB32 and AWE64

Posted on 2023-11-23, 01:21

by

by DerBaum

in Marvin \ Sound

in Marvin \ Sound

Nice. I have to try that. 👍

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Re: The most coolest IDE hardrives....

Posted on 2023-11-22, 00:37

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by DerBaum

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Here is a small video of random seek on my Kalok KL-343. https://www.youtube.com/shorts/9HLOmm0Xdkg The sound was way cooler when they used stepper motors instead of voice coils.

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

Posted on 2023-11-22, 00:03

by

by DerBaum

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Today was a mixed bag of retro computing... Thanks to vogons user @Balog i now have a second FastRAM Card and a 287 co-processor for my ast premium 286. First good news: The 287 co-processor works perfectly fine. I removed the "jumper" co-processor and installed the new one. That was simple. 2023- …

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

Posted on 2023-11-21, 00:19

by

by DerBaum

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Kahenraz wrote on 2023-11-21, 00:09: ...all you need to do is decide what to put on it for a case badge. I have an idea...

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Re: Vibra16 and Internal PC Speaker

Posted on 2023-11-20, 17:12

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by DerBaum

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hello! In my 486dx4-100 I installed a Vibra16 ISA card. From that moment on, the internal PC Speaker no longer works. The beep when turning on the computer works, but then doesn't sound during games that require the internal PC Speaker. For example Microprose Soccer has no sound. I noticed that the …

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Re: SC8850 one easy mod, bring back the magic of sound

Posted on 2023-11-20, 11:04

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by DerBaum

in Marvin \ Sound

in Marvin \ Sound

The waveforms of modified vs stock are not the same. But what I see is timing and speed differences, implying audio manipulation. wf.png I am sure we will get a plausible explaination. My guess is that the small diameter of the fuse makes the energy slower and this will affect the playback speed …

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Re: Aztech Sound Galaxy cards

Posted on 2023-11-20, 10:37

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by DerBaum

in Marvin \ Sound

in Marvin \ Sound

... If you install original Aztech drivers they will ask you if you want to install the cd rom driver. Just say no there and its done. No need to disable it on the board. And like mentioned Unisound is a PNP tool. I misremembered that the first generation isnt pnp. And even if unisound could …

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Re: Aztech Sound Galaxy cards

Posted on 2023-11-20, 08:27

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by DerBaum

in Marvin \ Sound

in Marvin \ Sound

I have three Aztech Card. I38-MMSN813 with AZTSB0792/AZTDSP36/CS4231-KL/Yamaha YMF262-M I38-MMSD802 with AZTSSPTO592-UO1/AZT-NXPMIX0592/LS-212 I38-MMSN810 with AZTSSPTO592-UO1/AZT-NXPMIX0592/AD1848KP/AZTDSP38/LS-212 I attach photo. Please help me identify this cards, and suggest what driver setup …

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Re: I recently found this hardware, AKA the Dumpster find thread.

Posted on 2023-11-20, 08:15

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by DerBaum

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

... now i need a ton of drives :D 11 caddys are for 300gb 10k sas drives and 2 caddys are for 146gb 15k sas drives. The system also takes regular sata drives... so i have a wide range of drives to choose from. Of course i want the drives that are labeled on the front of the caddys! :D These SAS- …

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Re: Bad Floppy Controller on ASRock 775i65G R3.0?

Posted on 2023-11-19, 22:50

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by DerBaum

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The floppydrive should have a resistor network on the pcb near the connector for termination. On some really old drives you could remove the resistor network, on newer drives it is not removable.

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

Posted on 2023-11-19, 18:53

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by DerBaum

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Make no mistake. ALL hardware you buy, is from China. China makes Apple kit as well as counterfeit kit. The quantity of unregulated poor quality products flooding the market for decades is also ruining the rest of the industry there. I don't know were are you getting your facts from, but the …

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Re: Aztech Sound Galaxy cards

Posted on 2023-11-19, 18:22

by

by DerBaum

in Marvin \ Sound

in Marvin \ Sound

envagyok wrote on 2023-11-19, 17:55: Error opening setup.inf Prigram Abort. But setup.inf is there. Maybe problem, i install ftom hdd? […] Show full quote Error opening setup.inf Prigram Abort. But setup.inf is there. Maybe problem, i install ftom hdd? the original aztech drivers have to be …

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