Re: Can you identify this Baby AT Motherboard?

Posted on 2021-08-09, 06:30

by

by kaputnik

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Can you boot the board? It might be too old - got very limited experience in anything older than S7 boards myself - but if if it was a thing back then too, it might show a BIOS manufacturer code during POST, that can be very helpful when trying to identify it. https://www.wimsbios.com/aminumbers. …

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Re: P3B-F and Coppermine in slotket troubles

Posted on 2021-08-08, 09:11

by

by kaputnik

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

@kaputnik, you made my day. Even though I have blisters on my fingers now. Using your technique and making a mess with WD40 eventually brought all my 370 CPUs to life on the P3B-F. Even the Cyrix III 600, which never worked in any of my boards and thus I thought was dead, runs fine not only in that …

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Re: P3B-F and Coppermine in slotket troubles

Posted on 2021-08-06, 09:52

by

by kaputnik

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Got a very similar slotket, that works just fine with Coppermine. IIRC the socket connections had some waxy residue on them though, perhaps flux, or some kind of electronics grease that had dried up. Mine was new in box. Rubbed the residue off and got it working by installing a CPU in the socket, …

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Re: Preferred IDE and Floppy cables?

Posted on 2021-02-13, 11:19

by

by kaputnik

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Also crimping my own cables. Got my hands on a roll of round ribbon cable a few years ago, and connectors cost next to nothing. So nice to be able to do custom lengths. All you need is a crimp or vice, some ribbon cables, and the IDC connectors. 34 pins for floppy, 40 for IDE. That sounds …

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Re: ATX I/O shield models for 3D printing

Posted on 2021-02-04, 21:23

by

by kaputnik

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I hope you don't mind kaputnik, but I made some minor changes to your design to add a few more optional ports. AT IO shield 0.5.png I added a second PS/2 port for motherboards that have the PS/2 port soldered on. Like this: 20210117_205654.jpg Additionally, I added the option to replace either a …

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Re: ATX I/O shield models for 3D printing

Posted on 2021-01-11, 19:04

by

by kaputnik

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I don't mean to derail, but does anyone have the measurements where the 5 pin din keyboard connector would be on the plate? I have a bunch of blanks and just drilling out the holes would be easier for me. Here are the measurements I used for the AT I/O shield. Using the case aperture as reference: …

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Re: ATX I/O shield models for 3D printing

Posted on 2021-01-11, 08:11

by

by kaputnik

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Check the third post in this thread, isn't that more or less exactly what you're describing? Or am I misunderstanding you somehow? :) Only the DIN connector hole is premade, and there are cutting guides in case you want to install mouse or com/LPT ports. The third pic shows what it looks like fresh …

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Re: Socket 370 with ISA best motherboard

Posted on 2020-12-15, 11:07

by

by kaputnik

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Just buy some nice BX motherboard (like Asus P3B-F, P2B later revisions, similar ones from Abit, Gigabyte etc) and modify a slocket to use Tualatin, will run nicely at 133MHz FSB too, only thing is that AGP will be at 89 MHz which is no problem on 99% nVidia cards and 3DFx cards. Most ATI cards do …

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Re: Spots on a retro laptop display.

Posted on 2020-11-10, 10:45

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by kaputnik

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Seen similar spots caused by foreign particles that's found their way into the panel, pushing on and deforming the backlighting reflective layer. Usually, it's not all that hard to disassemble or put together old panels as long as you're careful, could be worth the trouble to open it and have a look …

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Re: What are people doing for cheap cases these days...

Posted on 2020-11-06, 10:16

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by kaputnik

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

My personal favorite for ATX retro builds is the Cooler Master Elite 361 . Looks like it too has gone out of production, but that can't have been long ago, perhaps there are still vendors having them in stock? It's very compact to be a full ATX case, mostly due to the somewhat odd PSU placement. The …

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Re: Put a Pentium MMX 233mhz CPU in my DOS machine, still reads as Pentium-S 120mhz. What am I missing?

Posted on 2020-11-05, 23:06

by

by kaputnik

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

This what I'd need? https://www.amazon.com/20-Pin-Power-Supply-Adapter-Cable/dp/B01EDGS0KI Yep, that will work. If you don't mind waiting a while, you can get them on eBay from China for $3.25 a piece though. https://www.ebay.com/itm/18AWG-20Pin-ATX-to-2X-6Pin-AT-PSU-Converter-Power-Cable-Cord-for- …

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Re: Put a Pentium MMX 233mhz CPU in my DOS machine, still reads as Pentium-S 120mhz. What am I missing?

Posted on 2020-11-05, 08:56

by

by kaputnik

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

233MMX is a special case cpu, it reuses 1,5x speed as 3,5x in capable motherboards. But i have never heard that 1,5x speed will in turn change to 2,0x speed. This is new. Not all OLD boards actually use multipliers the same way. At one point in time board manufacturers could float or ground a …

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Re: Bodge wire - type and gauge?

Posted on 2020-10-09, 09:47

by

by kaputnik

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Mostly using 30AWG Kynar insulated wire for that kind of jobs, got this 100m roll I never used up during my console modding days. It's usually a good choice for repairing signal traces. For the few cases where it's too coarse, I simply use a strand from some other wire. For power distribution traces …

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Re: VIA C3 CPU Support

Posted on 2020-10-03, 23:17

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by kaputnik

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Not the most impressive statistical basis perhaps, but successfully ran a C3 Ezra in both 440BX Slot 1 boards I've tried it with. One is an Abit BH7, the other a MSI MS-6119. My impression is that at least 440BX boards will work as long as the VRM can supply whatever voltage the CPU needs. I'm sure …

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Re: Bios hunt for MSI board

Posted on 2020-09-30, 21:56

by

by kaputnik

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Got one of those 440BX MSI boards that comes with either AMI or Award BIOS aswell, MS-6119 to be specific. Mine was the AMI version. Since I prefer Award, and the latest available version was far newer than the AMI one, I decided to try "cross flashing". Worked like a charm, no problems at all :) …

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Re: Where to buy AT io shields for ATX cases?

Posted on 2020-09-29, 16:07

by

by kaputnik

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Maybe we could re-design the backplates like the ones I altered here ? They have a taller edge area so that even PLA is able to flex sufficiently with it, the grips are reduced a bit too. Printing up the backplates in PETG would be great though as that solves the flexibility issue. The thickness …

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Re: ATX I/O shield models for 3D printing

Posted on 2020-09-29, 16:04

by

by kaputnik

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

At Thermalwrong's suggestion , I raised the edges of the AT I/O plate a millimeter, to make them more flexible and hopefully work better with PLA. I did not make the grips smaller though, since there's some I/O plate hole size variance between cases. It's easy enough to sand them down if necessary. …

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Re: ATX I/O shield models for 3D printing

Posted on 2020-09-29, 09:08

by

by kaputnik

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Well, didn't plan to go commercial, but as mentioned earlier, could of course print a few shields here and there for fellow vogoners at self cost + shipping from Sweden to wherever you are :) If you see this and are still willing to print some at cost plus shipping, I could use 5 for AT boards with …

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Re: Where to buy AT io shields for ATX cases?

Posted on 2020-09-29, 08:39

by

by kaputnik

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I had no idea I could get one printed. Following @aha2940's comments, is there a preferred type of plastic I should aim for that most printers should have? I know nothing about 3D printers :) I'll try to find the post you mentioned. Cool to see there's still interest in those models :) Amongst the …

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Re: Need help finding childhood Super 7 mobo w/ big Dragonfly on box (ALI Aladdin chipset)

Posted on 2020-09-27, 18:43

by

by kaputnik

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Lets play Devils advocate here. You never saw the motherboard ever, you only saw the box. You will never find this box even if you knew what it was. Your nostoalgia is based on specs and a box. So what difference does it make what board you get as long as it has the same specs. Since you never saw …

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