AMERICAN MEGATRENDS 286 motherboard missing BIOS chips

Posted on 2023-08-18, 11:04

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by vmr_

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Recently I came across an AMERICAN MEGATRENDS 286 motherboard, but unfortunately it is missing the BIOS chips. Wondering if members of the Vogons forum have this motherboard in working condition to get a copy of the BIOS chips images and the chips model to be used for BIOS - to restore this …

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Re: IBM PS/1 2121 restore

Posted on 2022-07-19, 16:32

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by vmr_

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

now, did a bit of digging - looks like the ROM chip used in PS/1 2121 is an AMD AM27C1024-150DC UV EPROM (still have to check if this is the exact ROM chip in my machine [cannot do for now, as it is in storage], but the above is based on similar machine I found the details about on the web). Not …

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Re: IBM PS/1 2121 restore

Posted on 2022-07-15, 11:41

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by vmr_

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thanks quicknick Does it happen to have any spare RAM upgrade module? :) I will see if I have around a molex 5V splitter connected to HDD power connector (as that is standard) - to see if it powers both FDD and HDD also paying attention to the the power passed through the PS/1 FDD cable :) https:// …

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IBM PS/1 2121 restore

Posted on 2022-07-13, 12:11

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by vmr_

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Got a while back a nice IBM PS/1 2121 386SX 16MHz 2MB RAM 40MB HDD machine, in excellent working condition, but missing all the software apart of the ROM one (getting to the quad icons split screen, but that's it). It sat in its box for last year, but now looking to restore this machine, hence …

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Re: Best (Super) Socket 7 motherboard?

Posted on 2021-11-04, 13:51

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by vmr_

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Adding Freeway FW-TI5VGF mobo 😁, to be tested soon

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Re: Bought these (retro) hardware today

Posted on 2021-11-04, 13:10

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by vmr_

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

imi wrote on 2021-11-04, 13:04: vmr_ wrote on 2021-11-04, 12:58: Arguably the best SS7 motherboard without ISA slot? ....arguable indeed 😁 Heh, as one of the late SS7 mobos, guess ISA slots were seen obsolete already Which brings the question: anyone knows which was the last SS7 mainboard launched? …

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Re: Bought these (retro) hardware today

Posted on 2021-11-04, 12:59

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by vmr_

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

A bit of a glutton for dual-chip VGA / GPUs - no matter how much they struggled at the time. There’s something haphazard and inelegant about a dual-chip ‘solution’. Needless to say, I must have these quirky, cantankerous beasts. ATI Rage Fury Maxx. Now to find a stable driver release for both Win98 …

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Re: Bought these (retro) hardware today

Posted on 2021-11-04, 12:58

by

by vmr_

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

In the unicorns an leprechauns section: Arguably the best SS7 motherboard - will put it to the test at some stage 😁 Got the Ultra+ version as well, comparing the specs

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Re: Bought these (retro) hardware today

Posted on 2021-10-08, 11:44

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by vmr_

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Is it rare because it's 133 marked as 150+ ?? Coz I've seen plenty of 150+ 2x60 and plenty of 2x66 marked 166+ For this model of cyrix 6x86MX (with MMX and EMMI instructions plus better compatibility with pentium) version, it is. Plenty of earlier models 6x86 and 6x86L (low power version) at pr150, …

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Re: Bought these (retro) hardware today

Posted on 2021-10-07, 17:02

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by vmr_

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Another super elusive specimen 😁 Guess this one was plagued by limited production quantities and pressure for Cyrix to move to higher frequency / PR ratings to attempt competing with Intel and AMD back in 97. Will put it to the test soon.

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Re: What game are you playing now?

Posted on 2021-09-05, 18:52

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by vmr_

in Milliways

in Milliways

on K6-2+ 550 (oc) with voodoo 3 2000 AGP - finished Dune (1992) few weeks ago, great craic. Also did Blade Runner (1997). Think System Shock 2 is next 😀

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Re: AMD K6 3DMARK, aiming for stars.

Posted on 2021-08-23, 14:56

by

by vmr_

in Marvin \ Video

in Marvin \ Video

Yes this is the idea I had, you also saying it gives me hope. The end goal is 5.5X133 for 733MHz :D This looks like a nice challenge. Have a bunch of SS7 boards pending benchmarking, including AOpen AX59PRO (possibly a 2MB version as well), Asus P5A 1.04 and P5A-B, Gigabyte ga-5ax and (soon, …

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Re: Rarest CPUs?

Posted on 2021-08-03, 14:22

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by vmr_

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

mt777 wrote on 2021-07-04, 00:50: I have P120 but doesn't boot 😒 What was purpose of these cpus (120/133)? NxVL has jumpers for max P110? I think only the PCI version of Alaris Nexgen mobo supports P120. I can test it for you 😀

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Re: The "Driver CD" for motherboards thread

Posted on 2021-08-03, 11:52

by

by vmr_

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

SETBLASTER wrote on 2021-06-20, 18:39: vmr_ wrote on 2021-05-24, 16:30: I think I have somewhere the original CD for Gigabyte ga-5ax, possibly Asus P5a as well. Have to dig it out from storage 😀 Not sure about AOpen ax59pro, have to check did you find anything? yes, I am away and will create the …

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Re: The "Driver CD" for motherboards thread

Posted on 2021-05-24, 16:30

by

by vmr_

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I think I have somewhere the original CD for Gigabyte ga-5ax, possibly Asus P5a as well. Have to dig it out from storage 😀 Not sure about AOpen ax59pro, have to check

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Re: Bought these (retro) hardware today

Posted on 2021-04-21, 21:28

by

by vmr_

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

mtgmackid wrote on 2021-04-20, 09:13: 486 tower with ASUS ISA-486SV2 + DX2, Genoa VLB, VLB I/O card- paid $30 for this https://i.imgur.com/ge3BQq9.jpg […] Show full quote 486 tower with ASUS ISA-486SV2 + DX2, Genoa VLB, VLB I/O card- paid $30 for this Love this case, have a 386 build in the attic …

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

Posted on 2021-04-20, 16:32

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by vmr_

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Finally I got the time to 'clone' a 540MB Maxtor 7540AV HDD with DOS 6.22 and Win 3.1 on a 4GB CF card. Tried first CloneZilla Live CD- but it failed with strange errors - both on Socket 5 and Slot 1 motherboards. Maybe latest version is not supporting 1996-1998 motherboards, so not spending more …

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

Posted on 2021-04-15, 15:14

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by vmr_

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Finaly managed to do the POST test for my Intel Batman motherboard, looks promising so far Re: Bought these (retro) hardware today dosbench tests also work nicely, will compile a list of results soon

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Re: Bought these (retro) hardware today

Posted on 2021-04-15, 12:28

by

by vmr_

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The super elusive Intel Batman motherboard (the real one), working Batman benchmarks soon 😀

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Re: VRM for Shuttle HOT-541 motherboard?

Posted on 2021-03-31, 21:27

by

by vmr_

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

finaly, light at the end of the tunnel... and HOT-541 is ALIVE!!!! with EEPROM replacement and BIOS chip programmer, as hot flashing failed. the long story : 1. when I got the motherboard, it turns out it had the wrong BIOS version (and I didn't know it back then), so at boot time it did show a BIOS …

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