Re: UMC chipset PCI 486 mobo. AMD P90 CPU options?

Posted on 2011-01-06, 14:22

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by retro games 100

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Quick update. I set the mobo's bus jumper to 40 MHz, and the P75 chip now runs at 160 MHz. I tried another video card, this time a 1MB Number 9 Virge 325 card. Doom = 2134 / 1388, quake = 17.1, 3dbench = 0.00, 3dbench v1.0c = 93.9

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Re: UMC chipset PCI 486 mobo. AMD P90 CPU options?

Posted on 2011-01-06, 13:18

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by retro games 100

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thanks a lot for the info, people. I haven't got a W95 HDD at the moment, but I have got W98 and also Wme. I'll try them as soon as possble. Also, I will try to find some undocumented bus speed settings. I'll see if I can get all of this done today. I've already increased the RAM from 16MB to 32MB, …

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Re: 386DX40 build

Posted on 2011-01-06, 12:32

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by retro games 100

in Marvin \ System Specs

in Marvin \ System Specs

My oscis have arrived. Look at the box it was shipped in! :shocked: It's the long one. The other huge box contains just 2 sound cards. The oscis can be seen in the 2nd photo. They are 2x 50 and 2x 66 MHz. My 386 board has not arrived yet, but it's on its way... http://lh3.ggpht.com/_Dop-eDMechk/ …

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Re: UMC chipset PCI 486 mobo. AMD P90 CPU options?

Posted on 2011-01-05, 21:00

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by retro games 100

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I ran Doom shareware 1.9s, and set the screen to full size. I then ran doom -timedemo demo3, and I get 2134 / 1667. I ran Quake shareware 1.06, and set the screen to default, which is "2 notches" below full size. I then ran quake timedemo at the command console, and I get 14.2 FPS. I wonder if my …

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Re: UMC chipset PCI 486 mobo. AMD P90 CPU options?

Posted on 2011-01-05, 20:25

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by retro games 100

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I have got this mobo working well. Tweaking its BIOS settings to the max, I get 83.3 in 3DBench, using a 1MB PCI Trio64V+ card. That's using a 5x86 P75 chip, running at its native speed of 133 MHz. I'm using 1 stick of 16MB EDO RAM.

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Re: 3DBENCH CPU Benchmark Database

Posted on 2011-01-05, 20:22

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by retro games 100

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Oh yes! :happy: I have just managed to equal BasterMike's top score in 3DBench of 83.3! I used a PCI based Biostar MB-8433UUD-A mobo, PCB revision 3.1. I talked about this mobo here . The funny thing is, I can't remember where I got it from. AMD-5x86-33-4-133-Biostar-MB_8433UUD_A-UMC8881-256kB-PCI- …

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Re: UMC chipset PCI 486 mobo. AMD P90 CPU options?

Posted on 2011-01-05, 19:06

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by retro games 100

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Before buying a dallas chip, why don't you try to hack yours? I've done it twice, and both chips worked fine. Here's the RTC chip I fixed yesterday on a 386 motherboard, which was useless before. http://img696.imageshack.us/img696/990/291xy.th.jpg Uploaded with ImageShack.us Nice! :happyhappy: …

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Re: UMC chipset PCI 486 mobo. AMD P90 CPU options?

Posted on 2011-01-05, 17:15

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by retro games 100

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

OK thanks a lot! I'll get one or two, and then continue my testing on this board... I had a look at the BIOS options, and there is something called "Host clock / PCI clock". Is that something which is useful? The mobo's BIOS datestamp on the BIOS POST screen says March '96, so it's quite "modern". : …

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Re: UMC chipset PCI 486 mobo. AMD P90 CPU options?

Posted on 2011-01-05, 16:44

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by retro games 100

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

This is unfortunate - I can't successfully boot up the mobo, because the CMOS battery inside the Odin RTC block is dead. When the mobo displays its BIOS POST messages, it says that the CMOS battery is dead. I did a search for OEC12C887A (seen on the RTC in the photo) on ebay, and I can find one …

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Re: UMC chipset PCI 486 mobo. AMD P90 CPU options?

Posted on 2011-01-05, 16:26

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by retro games 100

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Markk wrote: I like the onboard ps/2 mouse input! So do I. 😀

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UMC chipset PCI 486 mobo. AMD P90 CPU options?

Posted on 2011-01-05, 14:36

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by retro games 100

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I looked up this mobo (MB-8433UUD-A) on the stason website, and it says that it will support the AMD P90 CPU. I googled for this CPU, and found a German wiki webpage that says that this chip was not released on the market. It also said that the P75+ chip, which apparently this board will accept, is …

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Re: 3DBENCH CPU Benchmark Database

Posted on 2011-01-05, 14:11

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by retro games 100

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Following on from the 62.5 score I got in my previous post above, I removed the PCI video card, and replaced it with a Cirrus Logic VLB GD5428 card. I reran 3DBench, and got a score of 12.3, which is a huge frame rate drop. http://lh6.ggpht.com/_Dop-eDMechk/TSR7hGlFfXI/AAAAAAAAAmk/R0Hpj-P1bSo/s800/ …

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Re: 3DBENCH CPU Benchmark Database

Posted on 2011-01-05, 13:54

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by retro games 100

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I can't see an AMD DX4-100 in the 3DBench database table, so here's one! AMD-486DX4-33-3-100-Soyo-4SA2-SIS 496/497-256kB-PCI-S3 Trio 64V+-1MB-retro games 100-62.5

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Re: Old 486 Project Box

Posted on 2011-01-04, 12:35

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by retro games 100

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

BTW, @retro, If you can, take a look at your PCChips m919. I just noticed that on mine, there's no visible leads coming from the outer-most pins on the CPU socket and that there's visible metal in all but the outer-most pin holes. While I did get mine to post with the Pentium Overdrive chip which …

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Re: 386DX40 build

Posted on 2011-01-04, 12:28

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by retro games 100

in Marvin \ System Specs

in Marvin \ System Specs

I've ordered a couple of 14 pin 5V oscillators; 66mhz and 50mhz. I got them from rs-online.com. They seem to have a global presence, and so perhaps other people can get them where they are located. I also ordered a 3x AA battery holder. Hopefully, I can begin testing this 386 mobo in a couple of …

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Re: Opti 82C929A - DOS driver anyone please?

Posted on 2011-01-04, 12:16

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by retro games 100

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

... I just found another version of my Opti 929 card. It's the image below, and it's identical to the image in my original post, except for one vital difference. Ace, you'll be able to spot this difference in approximately half a nanosecond! :wink: I must admit that I find this very interesting, …

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Re: 386DX40 build

Posted on 2011-01-03, 22:55

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by retro games 100

in Marvin \ System Specs

in Marvin \ System Specs

I've found another website, who do stock 66 mhz 14 pin oscis. The webpage is here - http://ly.rsdelivers.com/product/iqd/spxo003232/crystal-oscillator-module-66mhz-dil14/2262272.aspx (14 pin 66mhz oscillator) It says that this osci is 5v. Is that voltage OK, for a 386 mobo? Thanks a lot for any …

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Re: 386DX40 build

Posted on 2011-01-03, 22:47

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by retro games 100

in Marvin \ System Specs

in Marvin \ System Specs

Ah thanks! :happy: Looking at the mobo photo in DK's original post, I think the board's osci is the one about an inch north of the mobo's cache chips. The one with the plastic tie around it, and it looks rectangular. I will buy a 14 pin osci from this website! Thanks. Edit: Oops. They either don't …

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Re: 386DX40 build

Posted on 2011-01-03, 22:28

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by retro games 100

in Marvin \ System Specs

in Marvin \ System Specs

Regarding the crystal oscillator on the 386 mobo. Does anyone happen to know what pin size it is? I notice that the website amigakit sells both 8 and 14 pin 66MHz oscillators. I wonder if either of those would work? http://amigakit.leamancomputing.com/catalog/product_info.php?products_id=167 (8 pin, …

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Re: 386DX40 build

Posted on 2011-01-03, 21:54

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by retro games 100

in Marvin \ System Specs

in Marvin \ System Specs

Regarding a Tseng 4000 ISA video card, I am waiting for this card to arrive -

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