Re: 50mb HDD, no scandisk errors but errors during operations

Posted on Yesterday, 03:52

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Single Master implies IDE for me. Probably a ProDrive LPS 52AT from about 1991... Since IDE controllers are basically just buffers to the ISA bus even if you use a later (post 1994) IDE controller capable of handling that faster ISA bus that old 50Mb drive onboard controller can not, but will try 🤣 …

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

Posted on Yesterday, 03:20

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yes many soc 423 are odd IMHO 😁 ...Good find on the GF3 !

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Re: 386 board CMOS problem

Posted on Yesterday, 03:18

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I do not see a post code for C0 for any 1990-1994 AMI bios in my archives. Where did you get that info ? Generally a rtc failure does not halt a boot but KB controller error <0C code in AMI> can (and is near the old battery) The video glitch is probably from the ISA vid card and what ever monitor …

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Re: 50mb HDD, no scandisk errors but errors during operations

Posted on Yesterday, 01:08

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

why is your ISA 15Mhz and not 8Mhz ? If using an ISA HDD adapter that is most likely why it errors.....

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Re: Bought these (retro) hardware today

Posted on 2024-04-23, 22:43

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

You still need a special cable to connect it to VGA, it's a stupid connector competitor to DVI that didn't catch on. This one specifically works for Voodoo 3 3500: https://www.ebay.ch/itm/282632475628 See https://www.vogonswiki.com/index.php/Voodoo_3_3500_VGA Its not a standard 3500 but rather a …

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Re: Bought these (retro) hardware today

Posted on 2024-04-23, 03:29

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Did not buy yet but inquired on a voodoo 3 3000 agp 16mb video card for $50 plus postal shipping, sold semi locally. That is according to their description. no picture. So not sure what exactly it is yet, they are sending the 3dfx part # back in email tomorrow... or so they say....might be worth it …

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Re: Asus K7V Slot A hi-lo-hi-lo beeps

Posted on 2024-04-23, 03:21

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Curious what PSU you are using .... if it is too new the board may not like it. Have a few older slot 1 etc that anything newer than ATX 12v 2.03 won't work, fans spins and plays dead. Most newer psu are ATX 12v spec 2.3 or higher iirc. Just a thought.

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Re: Compra Presario 5226 Diagram

Posted on 2024-04-23, 03:09

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Sorry never seen a schematic for any of those Compaq "all-in-one" but would guess it is the PSU, which most likely is a dual type for the motherboard and the crt. Probably the capacitors and would be easy to spot the bad ones. Problem: the PSU could be a dual type for both motherboard and crt which …

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Re: 386 board CMOS problem

Posted on 2024-04-23, 02:08

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

With the CR2032 I'm getting 2.5V at the IC. When I connect a 3.6V battery to the external header I'm getting 2.8V at the IC, PSU getting 4.3V at pin 24 (I'm getting a good 5V elsewhere on the board), so somewhere along the line I'm losing power. Could I connect the positive from the external header …

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Re: I recently found this hardware, AKA the Dumpster find thread.

Posted on 2024-04-22, 03:56

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yes that "choose your OS" was a bit common during certain years with workstation class machines. Certain mid 2000's Dell Vostro's were that way, either XP or Win2k3 iirc..

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Re: Bought these (retro) hardware today

Posted on 2024-04-22, 03:27

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Did not buy yet but inquired on a voodoo 3 3000 agp 16mb video card for $50 plus postal shipping, sold semi locally. That is according to their description. no picture. So not sure what exactly it is yet, they are sending the 3dfx part # back in email tomorrow... or so they say....might be worth it …

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Re: Whats the best 5.25inch drive installation configuration in a XT class machine.

Posted on 2024-04-22, 00:04

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

So the 3.5 inch 1.44 MB drive just cant work on a single drive cable in the middle before the twist comes? Does these 3.5 inch 1.44MB drives also have termination and should it be possible to disable that? Most 3.5" newer floppy drives are locked at second ID for "A" after the twist, some have …

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Re: How hard is it to find retro/vintage computer hardware where you live?

Posted on 2024-04-21, 21:17

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Only thing I found in the last few weeks was an unopened/sealed Belkin F5D5005 v2.000 PCI network card for $4 at a goodwill. They go for about $15 on ebay.

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Re: 386 board CMOS problem

Posted on 2024-04-21, 20:49

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Did you try 4.5v on the external battery header ? Most Varta are 3.7v, CR2032 are 3.2v and with a diode drops to about 2.6-2.8v and too low to fully function the 5818 cmos (needs 3.0+ volts). Check VDD pin 24 of the 5818 ic with power off (on battery only) and see if you have 3.0v, then check with …

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Re: Pentium PRO?

Posted on 2024-04-21, 19:14

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Those are good ! The caps appear to be 20mm (TI UCC3882 datasheet) so you need nearly an inch from vrm socket slot to heatsink if orientation is toward the cpu.....

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Re: AT Ppower Supply with lost caps

Posted on 2024-04-21, 02:35

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

AYE ! Agree with you rasz_pl ! Makes good sense. My only concern on this PSU is a few missing caps on secondary side..in top picture..wondering why... added: Did I miss their were already removed ?

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Re: Whats the best 5.25inch drive installation configuration in a XT class machine.

Posted on 2024-04-21, 01:35

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I would use the 3.5" floppy as A drive, then add the 5.25". Why: My XT/3 has a 720k as A and the 360k as B so I can easily from any computer with a 1.44Mb 3.5" make bootable or other disks for it if needed. If you use the 360k as A then you need another with good 360k drive AND good 5.25" floppies …

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Re: Pentium PRO?

Posted on 2024-04-20, 17:16

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Here is a picture of my rare engineering sample given me by an intel engineer back in late 1990's (1997 iirc). Yes have had it in my possession that long..... It only works on a genuine Intel board like the VS440 AFAIK, note the lack of printing. It is an ES 528 version, the only other picture I …

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Re: Find English bios for unknown “Super 286-Z” motherboard

Posted on 2024-04-20, 01:29

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

thecheese2022 wrote on 2024-04-19, 20:52: BurntOutElectronics wrote on 2023-07-23, 06:36: Here are the photos in question. Indeed they’re both a 27C256 not 512. Could you dump the KOMPAN bios? Unfortunately he has not been back since 2023-08-29 according to his profile...

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Re: Is the core 2 extreme qx 6700 considered a collectable/rare cpu?

Posted on 2024-04-19, 03:22

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

^^ Good points VivienM !

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