Re: (SOLVED - defective FPU) How hot should an 8087 FPU be at idle? I'm getting 55-60 deg C... And other 8087 questions

Posted on 2021-02-24, 01:30

by

by Anonymous Coward

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

maxtherabbit wrote on 2021-02-23, 18:23: my 8087 is IBM marked, but I guess that's just an Intel part rebranded? Yes.

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Re: (SOLVED - defective FPU) How hot should an 8087 FPU be at idle? I'm getting 55-60 deg C... And other 8087 questions

Posted on 2021-02-23, 17:58

by

by Anonymous Coward

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Intel was the only manufacturer that produced the 8087 in any meaningful quantity. AMD and Cyrix were said the have developed clones, but they are so rare they might as well not even exist. There's also a very rare Soviet clone, which comes in unusual packaging. To the best of my knowledge, the …

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Re: Bought these (retro) hardware today

Posted on 2021-02-09, 07:52

by

by Anonymous Coward

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yeah the Cyrix was a 6x86 - i vividly remember reading PR133 and then seeing it also said 120mhz. I honestly thought it was a bit of a dodgy knockoff of a CPU because only Pentiums were spoke about at my school with no mention of a 686 (or 586 for that matter) and nobody I knew of heard of a cyrix. …

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Re: Tseng Labs ET4000/W32P PCI Rev. A - a good card for late dos gaming?

Posted on 2021-02-08, 02:03

by

by Anonymous Coward

in Marvin \ Video

in Marvin \ Video

I know I'm a bit late to the thread, but from what I remember reading the A and B revisions of the ET4000W32P had a buggy PCI interface. I've never owned one of these, so I don't know exactly how buggy, but they are said to be slower than the rev C and D. I don't believe VLB cards that use rev A and …

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Re: 3 (+3 more) retro battle stations

Posted on 2021-01-27, 14:50

by

by Anonymous Coward

in Marvin \ System Specs

in Marvin \ System Specs

I am a little familiar with your 5x86 problem. That chip changes its CPU id depending on how the multiplier is set. You can verify this in speedsys. When set to 3X mode, it reports itself as an am486, but when in 4X mode it becomes am5x86. My guess is that the BIOS doesn't support am5x86 and chokes. …

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Re: Best OS for a 286?

Posted on 2021-01-25, 13:42

by

by Anonymous Coward

in Milliways

in Milliways

I am somewhat confident that the Rampage AT does not work in 8-bit mode, because I own one and I am pretty certain I tried it many years ago. Besides, that card should be full height and might not even fit in a Tandy. You may be right about some of the later boards though. In any case, don't waste …

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Re: Which Vesa Local Bus graphics card?

Posted on 2021-01-24, 13:06

by

by Anonymous Coward

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

That is indeed pretty interesting, because they usually have "ticket to ride" stamped on the back.

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Re: Dell Dimension 466i Restoration/Build

Posted on 2021-01-24, 12:58

by

by Anonymous Coward

in Marvin \ System Specs

in Marvin \ System Specs

Personally I think removing the cutout was a mistake, especially since the CD-ROM drive is not grey. But if you must, a grey 5.25" floppy drive would look much better in there. Ideally you should use some kind of external CD-ROM drive with this system.

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Re: JUKO NEST XT board questions (manual attached)

Posted on 2021-01-24, 06:39

by

by Anonymous Coward

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Were the ST and the NEST produced side by side? And if so, does BIOS version on the ST correlate to the version number on the NEST? If so, and there were late BIOS releases for the ST but not for the NEST, it should be possible to split the ST ROM into even and odd banks for use on the NEST.

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Re: How about a MR-BIOS ROM file repository?

Posted on 2021-01-24, 06:34

by

by Anonymous Coward

in Marvin \ Software

in Marvin \ Software

I have a DTK motherboard that has a jumper that lets you handle the way the CPU oscillator is divided. Normally for 486s OSC should be twice the rated bus frequency of the CPU, but for some reason for the DX-50, this board lets you use a 50MHz oscillator if you change the jumper. Maybe your board …

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Re: 486 Multimedia dream build ( 1993/94 ).

Posted on 2021-01-21, 10:48

by

by Anonymous Coward

in Marvin \ System Specs

in Marvin \ System Specs

I haven't ran linux in a really long time...maybe 15 years or so. But what I remember was for a period, Gnome was a lot slower than KDE. That might not necessarily be the case now, and it probably also depends on how you have things configured. If you're just doing some generic install on a major …

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Re: 8-Bit Guy video's are becoming a chore!

Posted on 2021-01-21, 04:52

by

by Anonymous Coward

in Milliways

in Milliways

Less enthusiasm is easy to explain. 20 or 30 years ago, a lot of things were poorly documented, especially online....so it was exciting to uncover things and do stuff that had never been tried before. Just about every possible angle has now been exploited, and now every joe schmoe can easily find …

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Re: CCCyrix logo (clipart)

Posted on 2021-01-20, 23:31

by

by Anonymous Coward

in Milliways

in Milliways

Very nice. Thanks. I'll use that to create a more accurate rendition. That Fasmath box art is pretty classy. I like how in the ad it has warp engine trails like the 80's era star trek movies.

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Re: Dell Dimension 466i Restoration/Build

Posted on 2021-01-17, 00:52

by

by Anonymous Coward

in Marvin \ System Specs

in Marvin \ System Specs

I really liked the look of the Dell computers from the early 90s just before they started using the new logo.

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Re: FPU daughterboard

Posted on 2021-01-14, 23:59

by

by Anonymous Coward

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

That isn't an FPU board, though it is pretty interesting. It's a 10MHz CPU upgrade card with dedicated memory (almost an SBC), though it looks like it might be missing the cable that goes to the CPU socket. It's also unclear if it uses an 8086-1 or an 8088-1. (or maybe even an 80186, the picture is …

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Re: How about a MR-BIOS ROM file repository?

Posted on 2021-01-12, 04:17

by

by Anonymous Coward

in Marvin \ Software

in Marvin \ Software

Is that their EISA Pentium chipset?

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Re: Value in IBM AT vs a 386 for retro gaming?

Posted on 2021-01-11, 11:33

by

by Anonymous Coward

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I'd be okay with a clone 286 too. But, it has to be in a full sized desktop case. There were some pretty good clones. Everex was one of the best.

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Re: Mach64 PCI versions - ROM BIOS

Posted on 2021-01-10, 15:46

by

by Anonymous Coward

in Marvin \ Video

in Marvin \ Video

There should be a PC version of the GX that uses the IBM RAMDAC. I think it's called the Graphics Pro Turbo 1600.

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Re: Looking for BIOS image for ASUS ISA 386C

Posted on 2021-01-10, 15:34

by

by Anonymous Coward

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I experienced a similar problem with Mr. BIOS on my my SiS Rabbit board as well. It's a "CTI" brand that uses a very early revision rabbit chipset. Although MR BIOS claims to be compatible with the old revisions, it doesn't seem to work.

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Re: 8-Bit Guy video's are becoming a chore!

Posted on 2021-01-08, 14:31

by

by Anonymous Coward

in Milliways

in Milliways

I have seen some of the 8-bit guy videos, but generally only watch them if the topic looks interesting. He's a pretty awkward guy. The best way I can describe it is like watching a balder, nerdier version of myself. You've got to give him credit for having the balls to put his face on youtube. I'd …

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