Re: NEC Proserva V Plus (dual socket 7 system) (have a lead on multiple of these)

Posted on 2020-01-23, 14:35

by

by SSTV2

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I've waited several minutes, but it doesn't find a hard drive. I've tried disconnecting the hard drive, but it still hangs here. The problem now is that I cannot boot from a floppy disk to get the original v14 BIOS back on because the system must pass up the AIC-7880 firmware before it will boot …

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Re: NEC Proserva V Plus (dual socket 7 system) (have a lead on multiple of these)

Posted on 2020-01-19, 13:16

by

by SSTV2

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

SSTV2, thanks a lot for your clever solution. As Horun has two of these boards, he will probably be the first one to test out your modified BIOS. While the 4 mbit BIOS on the Proserva board is in the same package as the EEPROM we did for the Pentium Pro board last year, the location is a lot more …

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Re: NEC Proserva V Plus (dual socket 7 system) (have a lead on multiple of these)

Posted on 2020-01-18, 20:12

by

by SSTV2

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Replying to feipoa's PM. Predator99's idea of using a separate card to load a SCSI option ROM seems possible, if you'll manage to properly execute it from a NIC, then it'd be the safest method of BIOS "patch". Horun is right about the location of the AIC-7880's option ROM image , except it starts …

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Re: Can't get L2 cache work in UM486V motherboard when am5x86 CPU is inserted

Posted on 2020-01-17, 00:08

by

by SSTV2

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hi, both motherboards were tested thoroughly (UM486V and GA-486VM), but neither could detect L2 cache with a 5x86 CPU inserted. I had tried all possible BIOS settings and jumper configurations, related to L2 cache, but nothing could make it work, even tried various BIOS images from chipset- …

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Re: Voodoo graphics mod 4 to 8mb

Posted on 2019-12-08, 18:53

by

by SSTV2

in Marvin \ Video

in Marvin \ Video

Try to downclock Voodoo 2 to 50Mhz and you will see how miserably it struggles to run many games at 800x600. While it's unknown how much Voodoo 2 is better on clock-for-clock basis (without multitexturing), it's safe to assume that Voodoo 1 would be at least slightly worse. Agreed. In my opinion, …

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Re: Voodoo graphics mod 4 to 8mb

Posted on 2019-12-08, 15:51

by

by SSTV2

in Marvin \ Video

in Marvin \ Video

I wouldn't bother modding a Voodoo for the same reasons, that derSammler mentioned. You could directly swap 256K DRAM ICs with 512K DRAM, only on one condition: both FBI and TMU should be able to address more than 2 megs per bank (TMU might comply with such req., not sure about the FBI). Higher …

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Re: Will this MB support lower voltage Celerons?

Posted on 2019-12-01, 17:39

by

by SSTV2

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Oh, that and his signature text explains alot then 😀 Thank you for your support derSammler.

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Re: Will this MB support lower voltage Celerons?

Posted on 2019-12-01, 17:21

by

by SSTV2

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

This is the first time I see someone claiming that there were early revisions of 440BX chips, that did not support PIII CPUs at all. All he has claimed so far was something no one ever heared before. But hey, he fixed thousands of mainboards, so he must have lots of knowledge. :lol: Seriously, he's …

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Re: Will this MB support lower voltage Celerons?

Posted on 2019-12-01, 15:40

by

by SSTV2

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I don't care, it's B1 stepping and if you can't tell the difference between IC's stepping and revision, that's just not my problem, I won't bother explaining that to you, because you'd still find some childlish excuse for my arguments no matter what. You got the visual proof of a motherboard, that …

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Re: Will this MB support lower voltage Celerons?

Posted on 2019-12-01, 09:05

by

by SSTV2

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

@SSTV2 I'm sorry that you've never encounter it. Your lack of experience is not my responsibility. I have expected at least a constructive argument from you @PCBONEZ about the incompatibility issue of early stepping 440BX chipsets with PIII CPUs, that you have claimed, but istead of receiving one, …

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Re: BIOS Hotflash questions

Posted on 2019-12-01, 00:54

by

by SSTV2

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Can you post whole pictures of motherboards with replaced resonators? Bios ROM Checksum error could mean that BIOS you are trying to flash is incompatible with motherboard (but it's compatible enough to display something).

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Re: Will this MB support lower voltage Celerons?

Posted on 2019-12-01, 00:45

by

by SSTV2

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

This is the first time I see someone claiming that there were early revisions of 440BX chips, that did not support PIII CPUs at all. Honestly, I had never enountered such case, where a PIII CPU wouldn't work in a 440BX based motherboard, that got me interested and I did a little research on this …

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Re: Will this MB support lower voltage Celerons?

Posted on 2019-11-30, 19:29

by

by SSTV2

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Will it support a CPU swap? Is there a way to tell externally? I wouldn't even pay attention what asus or cpu-upgrade sites have to say about this motherboard, all I can see is that it's based on i440BX chipset and has a wide range of FSB selection. If you wish to know whether this motherboard …

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Re: Crazy prices for some retro hardware stuff.

Posted on 2019-11-30, 18:54

by

by SSTV2

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

astronomical sums Yeah, speaking of those.... Your shop - mentioned in your signature - has them...Everywhere. Care to elaborate how you ended up with those prices? https://classiccomputershop.eu/hardware/systems/PC Holy guacemole, Batman. 200EUR+ for a Tecra/Satellite, any Tecra/Satellite, is just …

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Re: Packard Bell CRT Monitor Issues

Posted on 2019-11-18, 15:54

by

by SSTV2

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

the horizontal edges of the screen move back and forth a couple of millimeters or so, but the center stays solid. The top and bottom edges of the drawn screen also stay still; it's only the horizontal edges of the drawn image. I don't get it, does raster stretch out vertically or horizontally? What …

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Re: Extensive 486 Modification - Getting an IBM PC 350 Type 6581 motherboard into a Packard Bell Legend PB400 Case

Posted on 2019-11-18, 00:27

by

by SSTV2

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The mod looks pretty nice at the first glance, but you sure have more than just a couple things left to do in order for it to be finished properly and completely. OK, lets start from the beginning. 1. I would've discouraged you from cutting the riser board, but the deed has been done. Riser board …

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Re: Extensive 486 Modification - Getting an IBM PC 350 Type 6581 motherboard into a Packard Bell Legend PB400 Case

Posted on 2019-11-16, 17:36

by

by SSTV2

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Working on an old computer restoration at school? I wonder what sort of study program allows you to have so much fun at the place of educational institution. Personally, I'd just patch a missing piece on the front bezel or, at least, would try to find a similar IBM case for the transfer, if finding …

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Re: Bought these (retro) hardware today

Posted on 2019-11-16, 16:59

by

by SSTV2

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Skanque wrote: The hunt continues, this time the main focus have been on early 3D accelerators ... Were you successful at reviving the broken GF4 Ti?

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Re: my strange PentiumII / SS7 setup

Posted on 2019-11-14, 15:26

by

by SSTV2

in Marvin \ System Specs

in Marvin \ System Specs

I think that you should unlock its true power by modding the motherboard for a 100MHz FSB support, that poor BX chipset is crippled badly. A lot of people seem to care about unlocked Pentium IIs and I don't really get it. Why is this useful? I don't get that either, it makes absolutely no sense to …

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Re: Need pinout for IBM 79F3443/61G3410 power supply

Posted on 2019-11-14, 14:54

by

by SSTV2

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

They are, believe me. My first PC was an IBM 8590 XP , imagine having to deal with their technical issues with no prior experience with PCs. Nothing was compatible with the system: PSU, MCA bus, RAM (parity only), cache RAM for HDD (proprietary), floppy drive, hard drive was SCSI and you cound't …

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