Remember The 8-Bit Guy's "Found at Computer Reset" Executive Workstation? I got one on the bench :)

Posted on 2022-04-26, 18:32

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by epictronics

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Sorry for the shameless self promotion, but I think some folks here might be interested in what was wrong with these machines : ) https://youtu.be/Ah9Rh1xxWn0

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Re: How to identify this 486 motherboard techmedia UMC um8498F

Posted on 2022-02-15, 05:19

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by epictronics

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

tabm0de wrote on 2022-02-14, 21:06: Could have been better 😜 Thanks!

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Re: How to identify this 486 motherboard techmedia UMC um8498F

Posted on 2022-02-13, 00:59

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by epictronics

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

A viewer just pointed me to this thread to identify a board I did a repair video about. This is a pretty interesting board for sure. Has anyone figured out the pinout for the VGA connector? Maybe this video can be helpful to repair the damaged traces https://youtu.be/_ODJeOSuFvc

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Re: What EMU to run CGA games on the 5151 with Hercules?

Posted on 2021-12-24, 00:57

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by epictronics

in Marvin \ Video

in Marvin \ Video

Solved! Tried CGA.COM and it works 😀

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What EMU to run CGA games on the 5151 with Hercules?

Posted on 2021-12-23, 21:39

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by epictronics

in Marvin \ Video

in Marvin \ Video

Hi, Not sure where to post this. I'm trying out some emulators to run CGA games on my 5150 with 5151 and Hercules. So far, it almost works with SIMCGA. (see image) I can run donkey.bas and it's sort of playable but the graphics are a bit messed up. Can anyone recommend a good emulator that might …

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Re: IBM 5151 on modern PC

Posted on 2021-12-18, 09:02

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by epictronics

in Marvin \ Video

in Marvin \ Video

Too bad, it would have been interesting to see it's shades of green outside the limitations of the MDA card. I'm definitely not going to risk destroying my 5151's but if someone would ever come up with a safe converter I'd love to play around.

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Re: IBM 5151 on modern PC

Posted on 2021-12-17, 07:31

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by epictronics

in Marvin \ Video

in Marvin \ Video

Oh, I have plenty of machines with proper MDA and Hercules that does my 5151's justice. However, I want to have some fun playing around with them on different systems.

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Re: IBM 5151 on modern PC

Posted on 2021-12-16, 23:17

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by epictronics

in Marvin \ Video

in Marvin \ Video

hmm.. Well, I expected this to be much easier but I guess I could swap the board if I can find a small enough mono VGA for a reasonable price. There's only one on ebay at the moment and they are asking $125 🙁

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Re: IBM 5151 on modern PC

Posted on 2021-12-16, 22:42

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by epictronics

in Marvin \ Video

in Marvin \ Video

Oh, crap, I just got my hopes up from the previous post. I have my boards out for cleaning and there are five unlabeled pots that might adjust v/h hold/sync. I need to find the manual to confirm.

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Re: IBM 5151 on modern PC

Posted on 2021-12-16, 21:14

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by epictronics

in Marvin \ Video

in Marvin \ Video

Yes, I'm not clever enough to make my own converter. However, there are plenty of converters out there for all kinds of vintage systems. Surely there must be something that could do it?

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Re: IBM 5151 on modern PC

Posted on 2021-12-16, 21:02

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by epictronics

in Marvin \ Video

in Marvin \ Video

Yes, it's silly, I know. But it will be fun, I promise 😀

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IBM 5151 on modern PC

Posted on 2021-12-16, 20:13

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by epictronics

in Marvin \ Video

in Marvin \ Video

Hi, Is there a cheap and cheerful converter out there to use my 5151 on a modern PC? VGA/DVI or HDMI, doesn't matter. It doesn't really need to be particularly good, I just want to play around. Thanks 😀

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Help identify VLB controller

Posted on 2021-06-08, 19:04

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by epictronics

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hi, I'm collecting parts for a new 486 project and found this controller but I can't find any info about it at all. Any help to identify would be appreciated 😀

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Re: AT PSU Keying

Posted on 2021-06-08, 11:23

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by epictronics

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thanks, The weird thing is that they are not keyed the same. On the PSU in the picture it's clearly visible that someone has keyed it by removing some of the tabs. And the mobo I'm playing with today does not have any plastic tabs removed and hence not keyed at all🤔

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AT PSU Keying

Posted on 2021-06-08, 08:59

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by epictronics

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hi all, I have noticed that some of my AT power connectors are keyed with small plastic tabs. Is it safe just to remove them and use any AT PSU with any AT Mobo? (with the black cables towards the middle) Thanks!

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Re: SOYO 025L2 Mobo - Specs and jumper settings request

Posted on 2021-06-01, 07:12

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by epictronics

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

computerguy08 wrote on 2021-05-31, 22:04: http://www.win3x.org/uh19/motherboard/show/4669 Thanks! Thats very useful, I'll read the manual this weekend and try out the board 😀

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SOYO 025L2 Mobo - Specs and jumper settings request

Posted on 2021-05-31, 21:13

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by epictronics

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hi all, I'm doing a new project this weekend and piling up all the bits and pieces. I have been offered to buy a SOYO 025L2 mobo but I cant find anything about the board on Google. Does anyone have a manual or any info at all that could be useful? I was hoping to use a DX4-100 if possible but I have …

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Re: Opening a Compaq 460-P ("1024") monitor

Posted on 2021-01-27, 18:56

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by epictronics

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hi, old thread but this is where google sent me. I couldn't find info and did some testing. You can use a flat screwdriver in the square holes on the top of the monitor and gently lift the screwdriver to unlatch the plastic tab inside. While you lift the screwdriver, gently pry off the back cover …

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Re: CRT Test suit for DOS or Windows?

Posted on 2021-01-15, 06:59

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by epictronics

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thanks, I'll try it out. So far the eizo is the best but it does not run well enough in 640x480, 256c. The Nokia suite does and has good and useful images. I have only tried it in win Me and XP.

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Re: CRT Test suit for DOS or Windows?

Posted on 2021-01-13, 08:18

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by epictronics

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I just found the service manual online for my IBM PS/2 8513 VGA CRT. It refers to FRU 07F6788. An alignment diskette that was shipped with the manual. The 8513 was released in 1987, so that alignment diskette is very likely to be for DOS. Unfortunately I can't find any further info about that …

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