Re: Memory simm for my PS/2 286

Posted on 2023-10-26, 17:52

by

by AlessandroB

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

pentiumspeed wrote on 2023-10-26, 16:13: Supports up to 4MB on board. But being IBM as usual used non-standard modules, you can use 3 chip or 9 chip 1MB modules but have to modify them. Success! Convert regular SIMMs into IBM PS/2 proprietary SIMMs but mine are ibm branded!

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Re: Math compro on a 286

Posted on 2023-10-26, 09:03

by

by AlessandroB

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

ok i will try soon as i can and i report ere... thanks for now.

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Re: Math compro on a 286

Posted on 2023-10-26, 08:51

by

by AlessandroB

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

so, i have a chance that my copro work correctly?

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Re: Math compro on a 286

Posted on 2023-10-26, 08:24

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by AlessandroB

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

this is my board: However, I tried to install the coprocessor and the configuration utility on the PS/2 floppy disk detects it, but I don't know if it works or not and at what frequency it works.

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Re: Math compro on a 286

Posted on 2023-10-26, 06:04

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by AlessandroB

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I read that the 287 may operate asynchronously, but at a different speed would depend on the motherboard. AMD's 287 is not capable of running asynchronously, it will always run at 2/3rd of the CPU clock. Any attempt to use an oscillator to control the frequency will cause instabilities, even when …

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Re: Memory simm for my PS/2 286

Posted on 2023-10-26, 04:52

by

by AlessandroB

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Is a Model 30-286.

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Re: Video card for a Pentium 60

Posted on 2023-10-25, 19:44

by

by AlessandroB

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

these

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Re: Math compro on a 286

Posted on 2023-10-25, 19:38

by

by AlessandroB

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

You confirm that must be same freq as the cpu. i like to have all my collection with no socket empty

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Math compro on a 286

Posted on 2023-10-25, 19:27

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by AlessandroB

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Time to upgrade my ps/2 286, apart for the non workin ram i have also this math copro in my collection, 286 is 10Mhz version, 287 you see in photo seems 6, it can work or i mist search for a 10Mhz version? tnks

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Memory simm for my PS/2 286

Posted on 2023-10-25, 19:18

by

by AlessandroB

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

i have 1Mb originally using the sim with 9 chip. i have also 4 simm with 3 chip seen in photo but when i install i only receive this error… someone know why?

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Re: Video card for a Pentium 60

Posted on 2023-10-25, 19:10

by

by AlessandroB

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I have these arrows to my bow, what do you think? do you see a suitable one?

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Re: Video card for a Pentium 60

Posted on 2023-10-25, 12:30

by

by AlessandroB

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

AMD K5 @117MHz (PR166 no MMX) managed to work well with some early 3D, like MotoRacer (smooth as butter), still its newer cpu than intel pentium 60, also Voodoo1 was working well for K5, still better to use faster AMD K6-2/3 or Intel Pentium MMX/PII cpu for early 3D stuff. At the same MHz speed AMD …

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Re: Video card for a Pentium 60

Posted on 2023-10-25, 12:27

by

by AlessandroB

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

ticket to ride is a series or a specific chip? because i see on ebay some s3 with this name and i note thet the Number 9 use the blu IBM chip, whats the function? tnks

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Re: Video card for a Pentium 60

Posted on 2023-10-25, 08:40

by

by AlessandroB

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Another one for the list: Nvidia TNT m64 PCI Note this is a terrible choice of you want to be period correct but it has compatibility, speed and even directX support. Drivers for Dos/W3.1x/W9x are no problem at all. I know this card is designed for agp and in a Pentium 3 it is considered a real dud …

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Re: Video card for a Pentium 60

Posted on 2023-10-25, 05:57

by

by AlessandroB

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

ok thanks, i stay with the s3, nothing very interesting for spend money. tnks

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Re: Video card for a Pentium 60

Posted on 2023-10-24, 22:07

by

by AlessandroB

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The S3 chip is already a decent 2D performer but if you want to try a more "exotic" hardware, then check Matrox whose cards have consistently higher quality components albeit at the expense of some DOS compatibility. I was also thinking about Matrox, maybe a Matrox Millennium, I read about it in …

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Video card for a Pentium 60

Posted on 2023-10-24, 21:36

by

by AlessandroB

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

my Pentium60 has an S3 integrated on the motherboard which creates artifacts (probably a faulty RAM chip. I have thus installed an S3 on the PCI slot which works perfectly, given that the machine will be used mainly as a DOS, but perhaps also to experiment with Win95 , nt4 os2... which graphics card …

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Re: Upgrade for a 386sx25

Posted on 2023-10-21, 11:45

by

by AlessandroB

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thank you for your always extremely technical and competent answers, mine is more of a request for "field" use of a 386sx25. I'll give you an example, I already knew, but you confirmed to me, that having a 386dx40 and a 486sx25 is very similar as a 360 degree result in the game. so having a 386dx40 …

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Re: Upgrade for a 386sx25

Posted on 2023-10-21, 11:07

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by AlessandroB

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I didn't specify but considering that I also collect these IBM computers I don't want to modify them in any way by desoldering the CPU or the oscillator. I was thinking of something like a chip-on-chip with something like a 386sx40mhz but without installing a 486lc or anything like that, I would …

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Re: Upgrade for a 386sx25

Posted on 2023-10-21, 09:38

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by AlessandroB

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

First, 386-40 is not that far from your 486sx in terms of performance, there is of course variance depending on the cache, graphics card etc., but although 486SX-25 is faster, the difference isn't most likely huge. 386SX-25 is or should be roughly double as fast as your 286, so there is already …

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