Re: EDO or SDRAM? Pentium 233MMX + Socket 7

Posted on 2022-02-17, 15:06

by

by alvaro84

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

idan182 wrote on 2022-02-17, 14:41: Does EMS needs set up? or that would be automatically if I use EDO RAM? The presence of EMS doesn't depend on the used memory type at all. It indeed needs a driver, either EMM386 or the like under DOS or given by Win98 to its DOS tasks.

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Re: The World's Fastest 486

Posted on 2021-04-03, 18:33

by

by alvaro84

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

My new video is online and I did beat your scores. :) https://youtu.be/qPRSHI4JoWI Damn. I tried to reach the same heights with my M919 but my cache module just didn't want to play nice. It isn't completely stable at 3-1-3 and at 2-1-2 it completely gives up. The highest score I could get in …

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Re: Abit AB-PB4 twin paradox

Posted on 2021-04-03, 06:27

by

by alvaro84

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Shared info about one of these boards here . It is a fast one. Fast as in it can do 100+ fps 3dbench (it seems so...) and 30k+ in Vspeed or Landmark video? If so, I see no hope of telling the chips apart as your M1489 is "SE" not "SC" like my faster one. I hope I can lay my hands on more of these …

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Re: Abit AB-PB4 twin paradox

Posted on 2021-04-03, 04:25

by

by alvaro84

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Well, it took me more than a month (making the program itself took 20 minutes with a break in the middle...), but finally I could sit down with these PB4s and check everything. The results are not very surprising but bewildering nonetheless. Fast control register space: 00: FF 0D 0D C5 FF FF FF FF …

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Re: Why I do this

Posted on 2021-03-31, 19:17

by

by alvaro84

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

flupke11 wrote on 2021-03-31, 18:38: sort of escapism that's fairly harmless (unlike other habits to relieve stress). Spot on.

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Re: 80386 BIOS image collection

Posted on 2021-03-15, 04:54

by

by alvaro84

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

And another one I couldn't identify, at least it's "new": #92 Board ID : Unknown 386DX/486DLC (again, feel free to id, please) Chipset : UM82C481/482 BIOS : MR 386DX/86DLC BIOS V.1.44 (still in Los Gatos) BIOS ID string: n/a Filename UMC.jpg File size 1.26 MiB Views 381 views Filename UM82481M.zip …

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Re: 80386 BIOS image collection

Posted on 2021-03-15, 04:49

by

by alvaro84

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

And an old debt of mine. It's not even the board I was asked to upload a BIOS dump from because that very piece died on me almost instantly. But I found another one so it's here: #91 Board ID : Unknown 486SLC-33 (feel free to id it which I'd appreciate) Chipset : ALI M1217-40 BIOS : MR 386SX/86SLC …

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Re: 80386 BIOS image collection

Posted on 2021-03-15, 04:42

by

by alvaro84

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Board ID : 303N1 V1.1 Chipset : ALI M1217-40 BIOS : MR BIOS MR001-SX V.1.41 BIOS ID string: n/a I seem to have the same board but the BIOS originates from somewhere else - unfortunately I don't remember the seriously damaged board I removed it from just to have MR BIOS for another board I may find …

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Re: Help with Neat N286-5 Motherboard

Posted on 2021-03-15, 00:38

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by alvaro84

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I think it's entirely possible that turbo switches between 10 and 20MHz. My permanent 286 toggles between 8 and 20, my 286 test board between 6 and 12. I'd probably be bold enough to experiment with anything that looks like a jumper header. On the fly, running a real time benchmark like topbench or …

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Re: Abit AB-PB4 twin paradox

Posted on 2021-02-15, 16:08

by

by alvaro84

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

... Thanks, it'll be quite a project! But, you gave me a lead. I'll be really curious as soon as I'm capable of feeling curiosity. After my first workday, I just can't... Edit. And talking about debug... Well, if that's the string that I saw in the first two blocks of the C000:0000 dump then the …

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Re: Abit AB-PB4 twin paradox

Posted on 2021-02-14, 07:23

by

by alvaro84

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Can you take a picture of the chipset ? Maybe there's a different chipset revision on both causing this behaviour ? In case the silkscreens aren't enough: chipset_fast.jpg ("Fast" chipset) chipset_slow.jpg ("Slow" chipset) I also ran benchmarks at 4*33MHz, with a Diamond Virge/DX (I was lucky again …

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Re: Abit AB-PB4 twin paradox

Posted on 2021-02-13, 11:26

by

by alvaro84

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Cant help but will though my results in as have the same motherboard, same revision, same CPU and same bios settings. Thanks, I'll give 33 a try. I have a few Virges lying around, and eve the permanent build's VGA is a Miro Virge/DX. It's just one single jumper difference to get to 33MHz FSB. It …

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Abit AB-PB4 twin paradox

Posted on 2021-02-13, 05:51

by

by alvaro84

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

(Foreword - I feel the need to apologize for the lack of pictures - one of the boards is built into a permanent system and it wouldn't look too useful with all the cards and cables covering most of it.) I happen to have two, apparently identical AB-PB4 boards. For the tests I equipped both with an …

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Re: 486DX PC running really slow. Thoughts?

Posted on 2021-02-04, 13:18

by

by alvaro84

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

But I should give a "486DX-60" a try. 66...? I'm not sure. Because VLB and all . That's why he said PCI motherboards. Well, it took this long but finally I got a PCI/5x86@180 system working. It's the M912's PCI counterpart, the M919 but it performed even a tad worse than the M912. No problem, the …

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Re: Starting a project. Pentium Pro 200

Posted on 2021-02-04, 13:04

by

by alvaro84

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I tried a Ppro-200/256 under DOS and though my consequence about its performance was "it's nothing special compared to a similarly clocked PMMX " (despite being vastly different) I still think the Ppro is a cool looking and otherwise very interesting CPU so yeah, go ahead, you can't go wrong with it …

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Re: Register settings for various CPUs

Posted on 2021-01-31, 08:06

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by alvaro84

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I necropost the thread to thank you feipoa for figuring out these settings. And report that my Quake timedemo went up from 19.3 to 20.6 fps with your guidance. I don't even know what clock it's running at, though. It's a BGA 180MHz piece but BIOS insists the board drives it at 200MHz. And every …

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Re: Memory not working together but works individually

Posted on 2021-01-30, 04:12

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by alvaro84

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Have hou tried them with relaxed timings? I'm not sure of course, 133MHz isn't THAT much but one of my P3B-F boards can not do 150MHz wit 1 stick with tightest timings (140 is okah though) and the other is very picky about it, taking only a fes pairs of the many sticks I've tested at 150MHz. Along …

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Re: CPU collectors: do you collect each and every revision or just one?

Posted on 2021-01-22, 03:16

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by alvaro84

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Miphee wrote on 2021-01-16, 21:49: But people who only collect CPUs will always love the 775 package. I don't. They can't be stacked in the showcase because the stacks tend to fall apart thanks to the asymmetric SMD arrays on the bottom. I'd say 775 CPUs are unstable 😁

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Re: 486DX PC running really slow. Thoughts?

Posted on 2021-01-19, 18:14

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by alvaro84

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

rmay635703 wrote on 2021-01-19, 16:31: Sadly Intel insisted on this holy terror CF39475D-45CD-4568-B19A-39CB9AA5DF3E.png What a beautiful and pointless chip, definitely missing from my collection...

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Re: 486DX PC running really slow. Thoughts?

Posted on 2021-01-19, 12:35

by

by alvaro84

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

On some PCI boards, the Intel DX 50 can even run at 66 MHz. Admittedly, my sample size of one single DX 50 isn't very meaningful :) No problem, even one data point can prove that something's possible. It can't tell you how common it is, but it's certainly possible. Heck, I had to get 3 pcs of 300A …

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