Re: Evergreen 5x86 Question

Posted on 2023-07-06, 00:24

by

by Jackal1983

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Photo Jul 05 2023, 5 11 42 PM.jpg Mine has a 3 pin header near C22, but the fan only takes two of the three pins. It has a 1998 date on the bottom. Maybe you could get out the multimeter and see if one of those pinless vias labeled "R5" goes to +5 and the other to ground? Ok, so got a better …

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Evergreen 5x86 Question

Posted on 2023-07-05, 19:28

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by Jackal1983

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

So I got one of these things for a screaming deal (assuming it works) and I was wondering if anyone was familiar with this variant of the interposer. I know some of them had unpopulated solder points for a 5 volt fan, but I don't see anything obvious on this one. Any ideas?

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Voodoo Rush with Macronix 2D Chip

Posted on 2023-02-01, 09:03

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by Jackal1983

in Marvin \ Video

in Marvin \ Video

Ok, so I'd like a bit more info on this. According to Gona's DOS compatibility matrix (https://gona.mactar.hu/DOS_TESTS/) of the 2D chips that come with the Voodoo Rush, the Macronix chip seems to be more compatible with DOS games compared to the Alliance chips. However I've also heard that its …

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Re: Need STB Velocity 128 PCI Bios

Posted on 2022-12-22, 13:37

by

by Jackal1983

in Marvin \ Video

in Marvin \ Video

I just checked and I have a card with that exact BIOS. What is the easiest way to get the BIOS from this without pulling the chip and reading it? I remember there was a program that did that but I can't remember which one it was. Actually I had a copy stashed on my HDD from back when I first got my …

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Re: Need STB Velocity 128 PCI Bios

Posted on 2022-12-22, 02:18

by

by Jackal1983

in Marvin \ Video

in Marvin \ Video

Was wondering if someone could point me towards it considering I've basically confirmed the bios chip is borked (flashed a Diamond Riva 128 bios to a EPROM and the card worked, it didn't give a signal with the stock chip) "Velocity 128 PCI NTSC 1.82" is what I need. I just checked and I have a card …

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Need STB Velocity 128 PCI Bios

Posted on 2022-12-21, 08:08

by

by Jackal1983

in Marvin \ Video

in Marvin \ Video

Was wondering if someone could point me towards it considering I've basically confirmed the bios chip is borked (flashed a Diamond Riva 128 bios to a EPROM and the card worked, it didn't give a signal with the stock chip) "Velocity 128 PCI NTSC 1.82" is what I need.

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Re: DH57JG Fan issues

Posted on 2022-12-15, 07:32

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by Jackal1983

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

majestyk wrote on 2022-12-15, 07:07: What´s the CPU temperature while they´re not spinning up? It got up into the high 80s (i was running memtest) and both fans were still idling. After that, I plugged a 3 pin fan header in line with the CPU as a stopgap. The case fan is still plugged directly into …

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DH57JG Fan issues

Posted on 2022-12-15, 06:32

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by Jackal1983

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Finishing up an ITX Win XP build and I'm having issues with the fans. Basically both stick to the lowest speed and don't ramp up any. Tried the handful of controls available in bios with no result (autodetect enabled guns them on boot then they go back to idle). I figure I may as well just control …

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Intel DH57JG Issue with Graphics Cards

Posted on 2022-10-14, 01:35

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by Jackal1983

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

So, because I had a bunch of XP compatible GPUs, a LGA1156 CPU, a mini ITX case and some DDR3 lying around, I figured I'd build me a nice XP based mITX rig. Bought a used Intel DH57JG board, plop my CPU in it and some DDR3 and it boots to bios fine. However it just does not see most PCI-E GPUS. It …

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Re: Tube Time: Announcing The Snark Barker, a 100% Compatible SB 1.0 Replica!

Posted on 2022-06-11, 20:40

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by Jackal1983

in Marvin \ Sound

in Marvin \ Sound

OK, so I'm looking at building one of these things but I'd like to know about some parts substitutions: 1.Substitution of most of the 74LS logic to 74F because they're actually available at Mouser and Digikey. -The U7, U8 (74LS138) and U17 (74LS139) appear to be available, so they'll stay as they …

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Re: PCI video card recommendation?

Posted on 2022-06-07, 15:40

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by Jackal1983

in Marvin \ Video

in Marvin \ Video

Don't rule out Quadros: the NVS 100 (I think) is roughly equivalent to a Geforce MX 420 (440 core clocks mated to 64 bit DDR ram, so memory bandwidth equivalent to an SDR equipped 128 bit MX 420). It's the same basic core as a Geforce 2 Pro (power wise a nice match for a 800mhz P3) with a better …

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Re: Need info about American Megatrends 286 Bios chips

Posted on 2022-05-19, 20:45

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by Jackal1983

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Ah, it's these files: ------------------------------------------------------- Headland Technologies HT12/12+, HT22/18C, HT320, HT340 ------------------------------------------------------- Filename Port Description - HT12/HT12+ -------- ------- …

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Re: Need info about American Megatrends 286 Bios chips

Posted on 2022-05-19, 20:04

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by Jackal1983

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I've used this, https://github.com/freem/romwak , program myself a few times. binary can be found under releases https://github.com/freem/romwak/releases/tag/0.3c I didn't know there was an Mr Bios for the ht-12. Interesting since I've got several boards with that chipset. I am a bit disappointed …

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Re: Need info about American Megatrends 286 Bios chips

Posted on 2022-05-19, 17:41

by

by Jackal1983

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Well, reading them like they are a 27c256 should work. Alright, thanks: I read it as a Am 27c256 and it worked after throwing a bad pin error on pin 1 (Vpp) which makes sense considering this is either a mask rom or a old school (fused) OTP ROM. I'd like to try the MR BIOS version for the HT-12, …

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Re: Need info about American Megatrends 286 Bios chips

Posted on 2022-05-19, 08:45

by

by Jackal1983

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

weedeewee wrote on 2022-05-19, 07:57: the info you are looking for should be underneath the stickers. generally, it's a 27C256 or compatible I think. There is no sticker, that's what is printed directly on the ceramic package

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Need info about American Megatrends 286 Bios chips

Posted on 2022-05-19, 07:16

by

by Jackal1983

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

My Headland HT-12A based 286 board has 2 American Megatrends branded bios chips in the standard Odd/Even configuration. I'd like to back them up using my TL866 but none of the numbers look like prom numbers: 1st Line is a date code and AMI 2nd Line: 286E-0 A 3rd Line: #C18864 4th Line: 764-117250- …

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Re: ESD and you

Posted on 2022-04-15, 21:58

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by Jackal1983

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Had the PSU off but it was hooked to the wall so..maybe it was grounded. I'm not sure. It was. There are no maybes with the ground. That connects first when you plug something in and it remains connected even if you turn the switch off. That's the most basic safety standard. First and foremost it's …

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Re: Any suggestions for a "It just works" Voodoo 3 build?

Posted on 2022-04-13, 01:26

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by Jackal1983

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Just as it should be able to handle any other socket A CPU with nothing more than a Voodoo3 and the usual clutter. Not really. Some time ago, I tested a Barton 3000+ on a KT880 motherboard + a GeForce 2 MX (4Watts), with two modern PSUs and one of them (Corsair VS450) didn’t even turn on. The other …

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Re: Any suggestions for a "It just works" Voodoo 3 build?

Posted on 2022-04-12, 19:29

by

by Jackal1983

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

AthlonXP-M and even moreso Geode will not work in most motherboards though. Maybe not officially, but my Geode has worked on the handful of mobos i've tried, namely a KM266 based asrock board and (I think) a KT400 based MSI board. Slightly higher voltage was the biggest issue, which to me was a …

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Re: Adding Wavetable header to ESS Solo-1 card (ES1938S)?

Posted on 2022-04-12, 18:15

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by Jackal1983

in Marvin \ Sound

in Marvin \ Sound

I have an ESS Solo-1 card and it has a spot for a wavetable header on the board, just with no actual connector installed. If a connector was installed, would this card work with a wavetable board? I have the exact same card. Once I added the wavetable header and plugged a board in Win98se …

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