Re: Replacing an AT power supply with a 3.3V rail

Posted on Yesterday, 19:56

by

by TheMobRules

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I have one of those P8, P9 and P10 adapters, basically the P10 takes 3 x 3.3V and 3 x grounds from the ATX power connector. I have a couple of boards with that type of connector, an Intel Batman's Revenge (Socket 4) and a Zeos Pantera. In the Intel board for example, that connector is there only to …

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Re: Any Socket 3 VLB SiS AMI CR2032 mainboards other than AOpen VI15G?

Posted on Yesterday, 19:33

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by TheMobRules

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

If you can track down the thread, please link to it - would like to know exactly how and where to change that register. https://www.vogons.org/viewtopic.php?p=788546#p788546 I have done the mod on both ASUS VL/I-486SV2GX4 and Gigabyte GA-486VS. Later today I can attach those modded BIOSes or some …

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Re: Any Socket 3 VLB SiS AMI CR2032 mainboards other than AOpen VI15G?

Posted on Yesterday, 16:53

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by TheMobRules

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

AFAIK Aopen board AMIBIOS has problem with setting up dirty bit for WB L2 cache properly. Yes, although to be fair SIS471 boards with Award BIOS have the same problem. But with Modbin the Award BIOS can be easily modded to fix the dirty bit issue by changing a register (there was a thread about …

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Re: Gigabyte GA-486am/s

Posted on Yesterday, 16:29

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by TheMobRules

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

First, make sure you have the latest BIOS (late 1995 if I remember correctly). I assume you have the manual for the basic jumper settings, for a 5x86 you need to set the following: JP5 3-4 & 5-6, RN2 & RN5 installed ("Intel, AMD") JP8 2-3 ("Intel S Series, AMD Enhance Series") JP9 Ope n ("AMD, UMC") …

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Re: Any Socket 3 VLB SiS AMI CR2032 mainboards other than AOpen VI15G?

Posted on Yesterday, 15:26

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by TheMobRules

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The Gigabyte GA-486VS (at least the revision 8A I have) has solder points for for a CR2032 battery, which can easily be installed as long as an SMD diode is removed to prevent it from being re-charged. It looks like factory-made when done. But as with the ASUS board, it also has an Award BIOS. Is …

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Re: Realibity of old WDC HDD

Posted on 2020-09-20, 17:04

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by TheMobRules

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I don't think one can say anything certain about HDD reliability unless they have tested large samples of the same model with known data of its power-on hours, which is the unit used by manufacturers to specify the HDD life expectancy. In particular, for old drives that do not support SMART there is …

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Re: Tell us about your 3DFX collection

Posted on 2020-09-18, 05:28

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by TheMobRules

in Marvin \ Video

in Marvin \ Video

1 x Diamond Monster 3D (Voodoo1 4MB) 1 x Diamond Monster 3D II (Voodoo2 12MB) 2 x STB V2-1000 (Voodoo2 12MB) 1 x Voodoo3 3000 AGP All of them working, though I haven't used the V3 in a while. The Monster 3D II is the same one I bought back in late 1998, it is difficult to describe to someone that …

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Re: Bought these (retro) hardware today

Posted on 2020-09-15, 07:30

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by TheMobRules

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Unfortunately I think you'll find that AT boards don't fit in mATX cases very well. On that little board however, only the top PCI slot would be inaccessible in an mATX case, and generally you won't use more than 1 or 2 PCI slots on a 486. But I believe some customizations will be required for the …

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Re: Are there any silent AT PSUs?

Posted on 2020-09-15, 00:58

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by TheMobRules

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The AT PSUs made by Startech until not long ago are pretty silent, but they use sleeve bearing fans which usually fail earlier than other types. I also have a couple of Antec units from back then with temperature-controlled fans, so they are really silent as the fan does not usually need to ramp up …

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Re: Newly made Gravis Ultrasound compatible cards ... what's the degree of interest?

Posted on 2020-09-14, 03:58

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by TheMobRules

in Marvin \ Sound

in Marvin \ Sound

This indicates that the mainboard probably is the source of the issue. It's an Asus VL/I-486SV2GX4. I've already tried to adapt the jumper settings from DX2/DX2SL to P24T (which the POD is identified as) sadly the machine hangs after post then. Changing BIOS versions didn't help at all. Currently …

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Re: Newly made Gravis Ultrasound compatible cards ... what's the degree of interest?

Posted on 2020-09-13, 05:15

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by TheMobRules

in Marvin \ Sound

in Marvin \ Sound

Sound issues with ROTT & Duke3D on my POD system also are present when using a GUS Classic (Max 1.8) Alright, I tested ROTT and Duke3D on the ARGUS using the following configuration: CPU: Pentium Overdrive @ 83MHz with L1 cache set to WB Motherboard: GA-486AM/S with 256KB L2 WB cache RAM: 16MB FPM …

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Re: Fake 486 Processor?

Posted on 2020-09-09, 15:31

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by TheMobRules

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

As mentioned above, there is already a thread about one of these chips not working. If the OP can test the one he bought that would shed some light on this. If that one doesn't work either, then almost certainly they are fake, otherwise the other person may have gotten a broken chip.

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Re: Newly made Gravis Ultrasound compatible cards ... what's the degree of interest?

Posted on 2020-09-08, 19:56

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by TheMobRules

in Marvin \ Sound

in Marvin \ Sound

On the other hand - I found a potential issue that might be worth investigating. Does anyone of you have an ARGUS or GUS PnP in a system with a Pentium Overdrive? I just recieved my PODP5V83 and installed it in my 486 system with my ARGUS - while most software works fine, all Apogee Software has …

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Re: Bought these (retro) hardware today

Posted on 2020-09-04, 15:53

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by TheMobRules

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

What's up with the duty fees and taxes in other countries? Is there some weird reason for price rape that high? As mentioned above, it's basically a scam by governments that cannot pass up the opportunity of making some free money off the hard work of their citizens. The usual excuse to do this is …

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Re: Gateway roadside rust bucket.

Posted on 2020-09-03, 05:34

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by TheMobRules

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Awesome! Very thorough job on both the power supply and the motherboard! Looking forward to the restoration of the case. I love these types of threads.

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Re: DTK bios for 386 PEM-3332D

Posted on 2020-09-02, 20:08

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by TheMobRules

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

You may find something in this thread.

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Re: Collecting rants

Posted on 2020-08-31, 17:16

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by TheMobRules

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

A while back I purchased an item from an international seller in eBay... not something terribly rare or expensive, but kind of uncommon and for a very good price. A few days after the purchase, the seller marked it as "shipped" but without any tracking number, which made me suspicious since the …

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Re: Should I invest in a UPS for my 486?

Posted on 2020-08-31, 16:22

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by TheMobRules

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I used to have a small APC UPS for my NAS until a blackout at around 4-5AM triggered it and started beeping so loud it almost gave me a heart attack as I suddenly woke up to the noise. Half-asleep, I then tried to gracefully shut down the NAS using a switch on its back but it was so dark I couldn't …

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Re: Types of capacitors to recap computer stuff (motherboard and PSU)

Posted on 2020-08-28, 16:51

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by TheMobRules

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yeah, for PSUs of the P4/XP era stuff like Nichicon UPW should be fine, low ESR but not "ultra-low". I have read about several instances of people attempting polymods on power supplies from that era and they usually have problems like canthearu said (due to the feedback loop being affected I believe …

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Re: Newly made Gravis Ultrasound compatible cards ... what's the degree of interest?

Posted on 2020-08-27, 21:06

by

by TheMobRules

in Marvin \ Sound

in Marvin \ Sound

Those brackets look fantastic Whiskey!

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