Re: Trying to build a 486 computer, are all my mobos dead or am i doing something wrong?

Posted on 2022-11-22, 18:58

by

by dinth

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

rasz_pl wrote on 2022-11-21, 23:37: someone flashed wrong bios? I dont think this is possible, all the mobos used to be in a working state lets say 20-25 years ago and nobody touched them since then.

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Re: Trying to build a 486 computer, are all my mobos dead or am i doing something wrong?

Posted on 2022-11-21, 13:54

by

by dinth

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Actually, during about 50+ tests this morning, on four different occasions i got POST codes on the display: C2, C3, C7 and 03 OK, this looks like sometimes you get proper BIOS code execution. Boot-block based AWARD BIOSes start with C0-C5 or like that in the boot block and continue with 03 as soon …

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Re: Trying to build a 486 computer, are all my mobos dead or am i doing something wrong?

Posted on 2022-11-19, 09:10

by

by dinth

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I cannot go back to testing two previous mobos because i have already disposed of them (sent them to a collector abroad who was willing to adopt them and even paid the postage). -5V is definitely missing, but i always thought this may only cause some of the ISA soundcards not to work, so it was not …

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Re: Trying to build a 486 computer, are all my mobos dead or am i doing something wrong?

Posted on 2022-11-18, 19:22

by

by dinth

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thanks for the reply. I think i have identified the mobo to be very similar to this one - https://www.elhvb.com/webhq/models/486vlb3/mb1433ui.htm slightly different chipset and lack of KB0, but the jumpers are all in the same places. Following this guide i set everything for Intel DX4/100 - https:// …

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Re: Trying to build a 486 computer, are all my mobos dead or am i doing something wrong?

Posted on 2022-11-18, 17:46

by

by dinth

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

vstrakh wrote on 2022-11-18, 17:39: Did you close the switch that starts ATX psu (PS_ON# to GND)? I don't remember how the Pico-PSU behaves, but I'd expect it to do the same as normal PSU does. And I see some hanging wires with the clips that should go into the switch. Yep I'm powering the mobo up …

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Re: Trying to build a 486 computer, are all my mobos dead or am i doing something wrong?

Posted on 2022-11-18, 17:28

by

by dinth

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

And a short video of post card after power up https://imgur.com/a/RHqxsbp

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Trying to build a 486 computer, are all my mobos dead or am i doing something wrong?

Posted on 2022-11-18, 17:25

by

by dinth

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hi. I am trying to build a 486 computer, using my older motherboards and they all seem to be dead, but when i tried a third one is completely dead it started to feel unlikely. For powering it i have bought a 150W ATX power supply (https://www.amazon.co.uk/gp/product/B09B2739VX/ref=ppx_yo_dt_b_search …

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Best Japanese PC-like computer?

Posted on 2021-11-28, 21:51

by

by dinth

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hi. Im thinking about adding one of the Japanese-made PC-like computers (X86000, FM-Towns, PC98, etc) to my collection. I couldnt find much content about those platforms on Youtube - sure, there are some "showing my Japanese games collection" videos, but there is no English-language video that would …

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Re: Toshiba Libretto 100CT - how to partition a large harddrive

Posted on 2021-10-20, 21:36

by

by dinth

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thanks for your tips and i will keep those apps as a last resort, but is there really no other way than using disk overlays? This will bring another issue, as i can only copy date onto my laptop either by connecting the drive to my linux desktop or by using floppies and apparently those disk …

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Toshiba Libretto 100CT - how to partition a large harddrive

Posted on 2021-10-20, 20:10

by

by dinth

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hi. I have replaced the harddrive with an 128GB SSD in my Toshiba Libretto, but i've got a problem with partitioning the drive for Windows 98SE. I have read various guides online, partitioned it on a newer computer, made an 8GB partition for the system and after that made a 1GB gap for the BIOS …

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Re: Asus P5A-B - ATX case solution?

Posted on 2021-08-25, 15:28

by

by dinth

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thanks for the advice. In this case i will look into buying a new case. Do you have any other advice when looking for a case for a retro computer?

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Re: Asus P5A-B - ATX case solution?

Posted on 2021-08-25, 13:02

by

by dinth

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

PARKE wrote on 2021-08-25, 11:26: Post some photo's of your case and we can comment. Filename 31CF35A1-6D80-4C57-8DEA-1F6E6951DEB1.jpeg File size 1.39 MiB Views 1289 views Filename D65691F8-F6E4-4E16-B20D-AA77C883A566.jpeg File size 1.35 MiB Views 1289 views

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Re: Asus P5A-B - ATX case solution?

Posted on 2021-08-25, 10:54

by

by dinth

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Right, you might be correct, so does it mean that that even the P5A model will still not fit in the case?

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Re: Asus P5A-B - ATX case solution?

Posted on 2021-08-25, 06:52

by

by dinth

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

What I meant by "If the case you want matters more" is that if it doesn't matter too much you could consider modding the case to get your board to fit (drilling mounting holes somehow ?) or replacing it with another one. Maybe a pic of the case would help ? The case is just an ordinary case, it is …

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Re: Asus P5A-B - ATX case solution?

Posted on 2021-08-24, 13:38

by

by dinth

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

If anyone here is interested - i have put an exchange offer on Amibay - https://www.amibay.com/showthread.php?1 ... X-version)

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Re: Asus P5A-B - ATX case solution?

Posted on 2021-08-23, 13:22

by

by dinth

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

If the case you want matters more you could consider getting the ATX version of this motherboard, the standard Asus p5a ? I would happily swap it for an ATX version, the problem is that those mobos are very expensive nowadays (several hundreds of pounds) but at the same time it would be hard for me …

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Asus P5A-B - ATX case solution?

Posted on 2021-08-22, 18:06

by

by dinth

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hi. I know that Asus P5A-B's are very popular mobos for retro gaming, but i was wondering if you have any solution for installing it in a ATX case? I have tried that but i have two issues - the screw hole locations are completely different to my (early) ATX case i wanted to use for this project and …

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Re: Toshiba Libretto 100ct - problem with installing Windows 98 on a larger drive

Posted on 2021-08-12, 14:47

by

by dinth

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hey. I managed to resolve it - a BIOS update from 7.00 to 8.10 fixed the issue.

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Re: Toshiba Libretto 100ct - problem with installing Windows 98 on a larger drive

Posted on 2021-08-12, 14:09

by

by dinth

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Just a quick update - i have installed Win98SE on the original (2gb) drive which came with this laptop - previously it had Windows ME and was working fine - and the laptop still fails to boot from that drive. So the issue has nothing to do with the large drive - unfortunately i cannot edit the topic …

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Toshiba Libretto 100ct - problem with installing Windows 98 on a larger drive

Posted on 2021-08-12, 11:32

by

by dinth

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hi. Im planning to use my new Libretto 100ct as DOS/Windows95-98 gaming laptop. I have upgraded the harddrive with a NGFF to IDE adapter holiding a 128GB drive (119.25 GiB reported on Linux - so below the 124GB limit of Windows98). I have partitioned it: 8gb for system partition, 1gb gap (for …

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