Re: MB and RAM for 486 DX-50

Posted on 2021-03-22, 19:38

by

by seleryba

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

If you're still looking for a mobo for the 486DX-50, I can highly recommend the ASUS ISA-486SV2. VLB+ISA, blue Socket 2. It's in my build for a long time and the system works well with the VLB Cirrus Logic graphics.

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Re: Problem with Windows 98 and DMA

Posted on 2021-03-09, 00:02

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by seleryba

in Windows

in Windows

Hi GEOCE. My idea is to remove all IDE controller devices in the Device Manager in safe mode. Then after reboot into the normal mode it may try to reset all the settings as OS will reinstall the drivers. Aside of that, you can check the BIOS settings, there's a chance that some option is disabled …

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

Posted on 2021-02-28, 23:29

by

by seleryba

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Done a retrobright and deep cleaning of this beauty: Filename 2AC605B1-F6A0-4977-884A-F518AC4CA430.jpeg File size 366.38 KiB Views 894 views so it now looks that: Filename E7571A81-FECF-47F9-9A54-0340C3231381.jpeg File size 1.45 MiB Views 894 views The turbo/reset button and the bezel will be added …

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Re: IBM PS/2 Model's 70 PSU: what is the System Status pin?

Posted on 2021-02-28, 13:53

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by seleryba

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thanks a lot @pentiumspeed. Now I know all to do the swap. Cheers

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Re: IBM PS/2 Model's 70 PSU: what is the System Status pin?

Posted on 2021-02-27, 10:32

by

by seleryba

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

pentiumspeed wrote on 2021-02-27, 03:54: That's for hard drive LED aka system status. Thank you @pentiumspeed! So I can leave it unplugged for the testing purposes and it should boot? BTW, how it works? PSU outputs the HDD led data? How does it know the HDD activity status?

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IBM PS/2 Model's 70 PSU: what is the System Status pin?

Posted on 2021-02-27, 02:58

by

by seleryba

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hi Folks. I have an IBM PS/2 Model 70 with broken power supply. I decided to swap internals of the supply with some modern ATX SFF one. I did it before with one of my IBM PC330 - a lot of cables to manage, but at all the pinout was like a standard AT/ATX power brick. In this case it's not that easy. …

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

Posted on 2021-01-24, 23:43

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by seleryba

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

During the weekend I have built the Retrobright indoor box with UV LED strip, hydrogen peroxide, aluminum foil and the plastic box. So I deyellowed my Packard Bell's P60 front case. It works fantastic. Photo below shows clearly a comparison of before and after. 7A732A46-6D11-45D0-928A-02C072BFAA62. …

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

Posted on 2021-01-04, 20:53

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by seleryba

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Tested the self-soldered ISA slot in my Asus CUBX I worked on here and it works perfectly. (OPL3-SAX is the ISA sound card) Filename cubx.jpg File size 620.35 KiB Views 1857 views

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

Posted on 2021-01-03, 15:39

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by seleryba

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I've soldered in an ISA slot to the Asus CUBX motherboard. There were pads on the board but my version doesn't had the slot. Removing the solder from pads with a solder wick was the most time consuming part. I need to compare it with photos from the versions with ISA factory mounted, to check if I …

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Re: Bought these (retro) hardware today

Posted on 2020-10-27, 19:45

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by seleryba

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Some highlights from the last weeks: Filename F574EBB9-9F1A-4E9D-A8FE-03B1D555239F.jpeg File size 1.11 MiB Views 1898 views Filename 71AA728F-A735-4B60-8931-92DF35B82B51.jpeg File size 1.19 MiB Views 1898 views Filename 4B12D3CA-788D-405C-AB1C-4E2555FA4FCB.jpeg File size 1.17 MiB Views 1898 views …

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Re: Bought these (retro) hardware today

Posted on 2020-07-03, 20:49

by

by seleryba

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

https://www.vogons.org/thumbs/42095_62a9a1ac616a25975c299bacdb507f17/vog4.jpeg Inspired by LGR, I've bought full-metal aluminium case. I'll build a Tualatin PC on it. Can't wait for the package! Ah shit. The package arrived and it comes out that front panel is made of plastic. Seller said in the …

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

Posted on 2020-07-01, 22:58

by

by seleryba

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

chrismeyer6 wrote on 2020-07-01, 22:40: That sounds like a great setup you have. Where did you find that awesome kvm ? From the local auction site. It was sold as untested. Probably from some recycling company. The price was around 20 dollars.

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

Posted on 2020-07-01, 22:13

by

by seleryba

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

https://i.imgur.com/nRDoEnH.jpg https://youtu.be/nE1xQYu1DaA This week I started connecting PCs I have to my KVM and network switch. Today I ended up with connected all the builds I wanted. The KVM is Adder Smartview 4xPro. I can connect up to 16 sets of VGA + PS/2 mouse + PS/2 keyboard. On the …

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Re: Bought these (retro) hardware today

Posted on 2020-06-30, 16:33

by

by seleryba

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

IBM PS/2 Model 70. PSU works but computer doesn't show anything on the screen. Few elements on the PCB are quite warm - I need to check the motherboard. Fingers crossed it's some capacitor/regulator issue... It also contains ESDI HDD, it spins up - with a bit of luck maybe it will work. I think I …

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Re: Bought these (retro) hardware today

Posted on 2020-06-29, 22:24

by

by seleryba

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Recently I've got (seller photos): vog1.jpeg IBM PS/2 Model 70. PSU works but computer doesn't show anything on the screen. Few elements on the PCB are quite warm - I need to check the motherboard. Fingers crossed it's some capacitor/regulator issue... It also contains ESDI HDD, it spins up - with a …

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Re: Bought these (retro) hardware today

Posted on 2020-06-18, 10:25

by

by seleryba

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Bought two CPUs: AMD 5x86-P75 and UMC Green CPU SUPER40 Filename zz1.jpg File size 1.19 MiB Views 1618 views also some glue items, rather nothing interesting but when you need it you start to remember them 😁 Filename zz2.jpg File size 1.6 MiB Views 1618 views plus one Teac 1,2MB disk drive Filename …

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Re: Bought these (retro) hardware today

Posted on 2020-06-15, 21:12

by

by seleryba

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Bought an AST Bravo LP 4/33. Filename 9026DEA7-B5A9-40DB-9C30-0B037E0EC7A9.jpeg File size 135.69 KiB Views 1289 views Filename C9C5634E-B9DF-442C-841F-5C9EC9B5ACA1.jpeg File size 132.87 KiB Views 1289 views

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

Posted on 2020-06-14, 17:47

by

by seleryba

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thanks, but to be honest the process was rather simple and straight forward. Good for you! This board looks like the maximum what can be get from this platform. Hopefully games will work well. @TechieDude thanks for soldering tips. About pr0n: I have sent PM for @OldCat, if anyone is intrested too, …

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

Posted on 2020-06-14, 12:23

by

by seleryba

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Follow up on my dual king ISA slot project … SUCCESS 😮 Wow, congrats! Not the easiest thing to solder in, especially when the tin is not the easiest to remove from holes (even with desoldering wire). You needed to just solder in the ISA slot and it worked or you needed to solder some other …

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Re: Slot1 mobo not detecting IDE disks

Posted on 2020-06-14, 12:13

by

by seleryba

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yep. The downside is this is done in software so makes the system slower and recovering files from it when there's something wrong with the partition can be an absolute nightmare. Totally agree with recovering nightmare, but I'm not sure about the performance. I use the overlay on my three 486/ …

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