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Reply 300 of 310, by feipoa

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Oh no. Is there any instruction you can send to the CPU that only an IBM 486BL3 will return a unique response?

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Reply 302 of 310, by Mumak

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It's a shame IBM did implement MSRs (which are standard P5 instructions), but didn't care to spend a few more transistors on CPUID as well.
In DOS it's no problem to re-route the interrupts and catch the fault (i.e. GPF, or as The Uncodumented PC says a Double-Found that can occur as well), but I don't have an idea how one could do this in 9x Kernel/VxD.
I just looked at NuMega VtoolsD and one file caught my attention - vfault.h. What do you think Franck?

The class library provides classes that facilitate hooking faults.

Reply 303 of 310, by repaxan

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There's a CPU-Z bug with listing the DIMM's supported frequency, this (slightly aggressive) video can explain it better than I can:

https://www.youtube.com/watch?v=SHLiZJZuDao

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Reply 304 of 310, by red-ray

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repaxan wrote on 2020-05-30, 04:13:

There's a CPU-Z bug with listing the DIMM's supported frequency, this (slightly aggressive) video can explain it better than I can:

I feel the video is misleading and suggest looking at what I posted about SPD speed reporting.

Reply 305 of 310, by RayeR

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BTW after 2 years I updated my small CPUID info tool for DOS/Win/Linux
http://www.rayer.g6.cz/programm/programe.htm#CPUID

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Reply 306 of 310, by Imperious

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Overclocked IBM/Cyrix MII PR166@200mhz, and stock AMD K6 266 (66X4). I am curious why cpuz has no problem detecting fsb and multipliers on
the 6x86 chips but can't on the AMD K6 on the same Motherboard which is a EPOX EP-MVP3G5. The K6 is not a k6-2

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Reply 307 of 310, by red-ray

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Imperious wrote on 2020-06-29, 12:45:

Overclocked IBM/Cyrix MII PR166@200mhz, and stock AMD K6 266 (66X4). I am curious why cpuz has no problem detecting fsb and multipliers on
the 6x86 chips but can't on the AMD K6 on the same Motherboard which is a EPOX EP-MVP3G5. The K6 is not a k6-2

On the MII the multiplier comes from the Cyrix DIR0 register and on a K6-2 from MSR C0000087, but I don't know if a K6 has MSR C0000087. Can you boot NT4, W2K of WXP? If so then check if SIV reports it on Menu->Hardware->CPUID->CPU-0. We can't sensibly check if MSR C0000087 exists using W9X as it does not support kernel mode structured exception handling.

file.php?id=87036

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    K6-2 has MSR C0000087
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Last edited by red-ray on 2020-06-29, 21:06. Edited 2 times in total.

Reply 309 of 310, by Imperious

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Thanks. I should have looked back a page, the same question was asked by Daniël Oosterhuis.
Too much hassle trying to install NT4, XP, or Win2000 on this computer but may try to boot xp off Hiren's boot cd and try Siv in that,
but the questions been answered.

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Reply 310 of 310, by red-ray

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Imperious wrote on 2020-06-30, 12:53:

may try to boot xp off Hiren's boot cd and try SIV in that

OK, SIV should run OK from MiniXP, but a GPU won't get reported, if not then no problem as temptation got the better of me 😀