Re: Looking for Abit AV4 BIOS image

Posted on 2020-03-30, 10:29

by

by Cyrix200+

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

- I notice on my POST card the reset line stays high. Not unexpected I think? I think this is the problem to be solved first. Take a working board, remove CPU, BIOS and Keyboard Controller. Reset is off on such board. Think you have some short or broken trace on your board... That is something I'm …

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Re: Looking for Abit AV4 BIOS image

Posted on 2020-03-30, 08:21

by

by Cyrix200+

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Those all look ok but maybe the PG and +12v as you said. The Power Good usually sits 3M-10Mohm but is board dependent. You can check it with the PSU connected and turned on (with CPU in) and see if it comes to near +5v after a second or two. The +12v should be close to the -12v in Mega ohms too. …

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Re: Looking for Abit AV4 BIOS image

Posted on 2020-03-29, 10:31

by

by Cyrix200+

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Have you checked for shorts? Pull cpu and ram, make sure it a bare board other than cache. Use a good DVM and check resistance from all AT PSU connections to ground using proper polarity (ground being black lead LOL). If any are less than 10Kohm make a note which ones. Is common for the +5v to be …

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Re: 80386 Soyo SY-016A/SY-019B repair / 74HCT vs 74FCT

Posted on 2020-03-27, 15:05

by

by Cyrix200+

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I had a similar board with a similar problem. This is my board's story: Looking for an ID/manual/jumpers and more info on this 386 AMD 40MHz board But you probably remember, you and Deunan helped me in that thread 😀

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Re: Looking for Abit AV4 BIOS image

Posted on 2020-03-27, 14:59

by

by Cyrix200+

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Since I worked from home today I could do some tinkering. - Changing the BIOS does not matter - I thoroughly checked all connections where any acid damage was visible. I de-soldered the keyboard connector to check underneath. Everything had continuity. Two vias are nasty though, they do connect from …

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Re: Looking for Abit AV4 BIOS image

Posted on 2020-03-27, 06:56

by

by Cyrix200+

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Would the lack of a BIOS battery prevent it from powering up? By the way, I see some green residue at where the battery has been. Are all traces intact? All traces look fine (visually), and I have checked continuity and I cannot find anything wrong. I tried powering on with an external battery pack …

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Re: Looking for Abit AV4 BIOS image

Posted on 2020-03-27, 04:50

by

by Cyrix200+

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thank you all! I can't wait to try. I will have to wait until tonight. I hope this will shed some light on what's wrong with the board.

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Re: Looking for Abit AV4 BIOS image

Posted on 2020-03-26, 19:24

by

by Cyrix200+

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The bios ID string in your file is 40-0101-001133-00101111-111192-SIS461. the 1133 relates to Micro Leader Enterprises. According to Wims BIOS it should be 1247 for Abit. It is possible it is the right bios as Abit did have some boards made by other manufactures, specially the older ones. There is …

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Looking for Abit AV4 BIOS image

Posted on 2020-03-26, 16:27

by

by Cyrix200+

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I have a motherboard that looks a lot like an Abit AV4 (http://www.uncreativelabs.de/th99/m/S-T/35060.htm). The board does not POST, does not beep and gives no POST codes . I have attached the image of the BIOS that came with the board, and I think it might be the wrong BIOS. Does anyone have an …

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Re: The XL-7 TURBO 8088 XT build

Posted on 2020-03-26, 09:28

by

by Cyrix200+

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

There is this, but it has some issues, including random lockups in text mode (never used it myself): http://aknamunka.uw.hu/mdah/1st.php

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Re: Games for Hercules monitor

Posted on 2020-03-24, 13:33

by

by Cyrix200+

in Marvin \ Software

in Marvin \ Software

I am tryibg to get a few games running on my commodore pc 10-2 which has a hercules monitor. Nothing seems to work. At best I get sound but no picture. I tried downloading a few games marked"Hercules" but still no succes. Added a screenshot of the monitor. Anyobe knows of anything that should run? …

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Re: Bought these (retro) hardware today

Posted on 2020-03-24, 07:03

by

by Cyrix200+

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

liqmat wrote on 2020-03-24, 00:46: EvieSigma wrote on 2020-03-23, 22:53: My favorites are the Texas Instruments chips that actually printed on a full color "Microsoft Windows Compatible" logo. Mine too. So bright and cheery. TI_486.gif Lovely 😀 This is mine: Filename IMG_20200222_150409.jpg File …

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Re: Sy-025J2 / unknown 486 ISA - Need help, Have questions

Posted on 2020-03-23, 19:18

by

by Cyrix200+

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thanks for looking :) II. unknown 486 ISA board The only marking i found is "4flud-1.1". I wasn't able to find it on stason. Anyone out there got some infos? WP_20180925_011.jpg At first glace it looked pretty good. On closer inspection not so. Lots of pins on the backside are bend over and i found …

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Re: Bought these (retro) hardware today

Posted on 2020-03-17, 08:31

by

by Cyrix200+

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Ok as I mentioned above. I went, looked and grabbed. Here are a few pics. The Laser XL/XT3 is near immaculate considering where, how it was stored, and it booted up but HD and PSU are dead. Will mess with the Packard Bell next in a few days. The HP monitor has 5 BNC and a special cable to DB15, …

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Re: What game are you playing now?

Posted on 2020-03-13, 10:30

by

by Cyrix200+

in Milliways

in Milliways

Pinball Fantasies (Stones 'N Bones) on my 386.

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Re: Retro Rig Photo Thread

Posted on 2020-03-13, 06:36

by

by Cyrix200+

in Marvin \ System Specs

in Marvin \ System Specs

Thanks to you guys for all of the help getting this thing running after these parts sat around for 15+ years! Here's my first hack at a 1997-2000 Franken-PC Pentium III Coppermine running at 550 (underclocked to reduce heat and wear, fan added temporarily by me) Asus P2B 512MB ECC RAM (only 256 is …

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

Posted on 2020-03-12, 13:43

by

by Cyrix200+

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Last night, I fixed one of my favourite monitors, a Samtron 14" VGA monitor. It has issues with a flickering image when the desk or monitor moved. As I expected, the VGA connector's solder joints were broken. Easy fix! I hope it shows on the picture when compressed a bit.

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Re: Bought these (retro) hardware today

Posted on 2020-03-11, 07:34

by

by Cyrix200+

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

SodaSuccubus wrote on 2020-03-10, 22:55: YYYYYESSSSS! […] Show full quote YYYYYESSSSS! I managed to get some help from a steady-handed relative and we managed to separate out the shorted legs just enough. Card seems to work fine now, just waiting for the SLI bridge 😁 (witness my cheap testbench. A …

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Re: Bought these (retro) hardware today

Posted on 2020-03-10, 19:22

by

by Cyrix200+

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Anyone got any advice on how to deal with these bends? Yeah, use a fine knife like people are telling you, but first go practice on some dead piece of electronics. Let your fingers learn how much pressing is enough, and how much will break things. Also, bend it just enough so they don't touch any …

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Re: Bought these (retro) hardware today

Posted on 2020-03-10, 09:49

by

by Cyrix200+

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Well, my second Diamond Monster 3D 2 (8mb) card came in today, and iv found out my 440bx board just refuses to POST when the new V2 is anywhere near it :( So now i gotta go through the long process of figuring out weather the card itself bit the dust or its something on my end, and if it is dead, …

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