VOGONS


First post, by Intel486dx33

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These PCI/ISA slot, socket 3 motherboards were very abundant back in 1995/96
They were manufactured when Win95 was released.
Prices for components was still very high.
1mb of ram costs $100
1mb of harddrive space costs $1
CPU’s were still very expensive.
The 1st gen. Pentium had just been released and was selling for about $200 and up.
The 486 CPU’s were no longer in high demand so computer stores were selling them for cheap.
AMD and Intel released these Budget friendly high end 486 and 586 CPU’s
Also Cyrix and IBM, Texas Instruments, UMC, and ITS.

So if you were on a tight budget and wanted to build a Win95 computer this is what you had available to you at the time.

Computer stores would sell these Motherboard / CPU combo’s for about $100

The components I used worked out of the box. ( Plug-N-Play ).
Windows 95b install CD discovered all the components and installed the correct drivers.
Everything worked fine.

Specs :
Motherboard - PM486PU-S3 PCI / ISA
* Manual link - https://www.elhvb.com/webhq/models/486pci/pm486pu.txt.html
CPU - ( Intel 486dx4-100 ) and ( AMD 486dx4-100 ) and ( AMD 486dx2-66 ).
Cache - 256kb.
RAM - 32mb. ( 8 or 16mb might have been more common in 1995 )
Hard drive - 300 to 425mb. IDE
CDROM Drive - Mitsumi 4x IDE
Sound Card - Sound Blaster 16, Turtle Beach Monte Carlo, Media Vision PAS16, Edison Gold ( ESS-688 ).
Video Card - S3 trio64 ( an inexpensive S3 or Trident would have been more common in 1995 )
Floppy drives - 3.5 and 5.25
Network card - 3com 3c509b ( Inexpensive 3com 3c509tx or Netgear FA310tx was very popular with home networks. )
PSU - 300 watt.
AT Case - Beige Mini tower.

OS - DOS 6.22 / Win95.

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Last edited by Intel486dx33 on 2022-01-20, 06:32. Edited 17 times in total.

Reply 1 of 47, by Intel486dx33

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More photos:

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Reply 3 of 47, by Intel486dx33

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More Photos:

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Reply 4 of 47, by Intel486dx33

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More 1995 photo stuff :

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Reply 6 of 47, by Intel486dx33

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Some more photos:

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Reply 7 of 47, by melbar

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You have shown here several sound cards for this built. Which one(s) you actually want to use?

About your Edison 16 Gold: Have you already tested it - all the functions?
I had an old post here, several years ago :
KWX-SC1616

It's actually the same card.

There are 4 CDROM interfaces :
Sony, Mitsumi, Panasonic and IDE.

But for CD-Audio-In, there i can see ports for Mitsumi, Panasonic and Sony only.
Then you can see 3 further 4-Pin headers behind the connection ports 'Line-In, Micro and Speakers'

I think the Sony CD-in connection is working to IDE drive's also, or not ?

K6-2/500 [VIA MVP3]
Athlon1200 [VIA KT133]
Celeron1000A [i815EP]

Reply 8 of 47, by OSkar000

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I'm getting a bit confused about this build. A typical 486dx4/100 from the middle/end of 1995 would have about 4-8mb ram, the cheapest grapics card you could find and a 540-850mb harddrive.

You have lots of ram, a really small harddrive and a very expensive grapics card (s3 968 based) that someone buying a high end pentium would chose.

I had to check some prices from 1995 after reading this post. This is from a Swedish supplier in july 1995.

Complete 486 system with 14" svga.
13000 SEK ( about 1500 USD without VAT)

540mb harddrive
2000 SEK or 225 USD without VAT

4mb 72pin fpm
1600SEK or 180 USD without VAT

Reply 9 of 47, by Intel486dx33

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melbar wrote on 2022-01-09, 19:41:
You have shown here several sound cards for this built. Which one(s) you actually want to use? […]
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You have shown here several sound cards for this built. Which one(s) you actually want to use?

About your Edison 16 Gold: Have you already tested it - all the functions?
I had an old post here, several years ago :
KWX-SC1616

It's actually the same card.

There are 4 CDROM interfaces :
Sony, Mitsumi, Panasonic and IDE.

But for CD-Audio-In, there i can see ports for Mitsumi, Panasonic and Sony only.
Then you can see 3 further 4-Pin headers behind the connection ports 'Line-In, Micro and Speakers'

I think the Sony CD-in connection is working to IDE drive's also, or not ?

Yes, I tried to use Plug-N-Play sound cards from or before 1995 or that would work good with Win95.
This motherboard bios actually does not support Plug-N-play but Win95 handles it fine anyways.

Sound cards I have tried that work well with Win95b default drivers are:
1) Sound Blaster 16
2) Media Vision PAS16
3) Edison Gold 16
4) Turtle beach Monte Carlo ( Also known as “K2Y-Pro16” ).

The Edison Gold 16 actually uses the ESS688 audio chip and Yamaha OPL3
Win95 install CD installed the default drivers and it is work fine.
I did not check all the connections or functions of the card.

Last edited by Intel486dx33 on 2022-01-17, 14:41. Edited 2 times in total.

Reply 10 of 47, by Intel486dx33

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OSkar000 wrote on 2022-01-09, 20:28:
I'm getting a bit confused about this build. A typical 486dx4/100 from the middle/end of 1995 would have about 4-8mb ram, the ch […]
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I'm getting a bit confused about this build. A typical 486dx4/100 from the middle/end of 1995 would have about 4-8mb ram, the cheapest grapics card you could find and a 540-850mb harddrive.

You have lots of ram, a really small harddrive and a very expensive grapics card (s3 968 based) that someone buying a high end pentium would chose.

I had to check some prices from 1995 after reading this post. This is from a Swedish supplier in july 1995.

Complete 486 system with 14" svga.
13000 SEK ( about 1500 USD without VAT)

540mb harddrive
2000 SEK or 225 USD without VAT

4mb 72pin fpm
1600SEK or 180 USD without VAT

Yes, I wanted to replicate a 486dx4-100 budget build of 1995/96.
But I wanted to use Plug-N-Play cards.

The motherboard I am using actually does not support Plug-N-Play but Win95 discovers all plug—n-play cards anyways.
Win95 discovered and installed drivers for the video card S3-trio64, NIC 3com 3c509b, and Edison gold 16.

Yes, components were expensive still in 1995/96
So yes, 8mb and 16mb of ram was more common.
I remember working for a computer internet portal company back in 1997 and we had an HP PC with 32mb of ram
And I thought that was allot of RAM back then.
I just used 32mb of RAM because I had it on hand and wanted to eliminate any bottle necks
In the OS performance.
But, I also swapped out the 4x CDROM with a 32x CDROM because that 4x CDROM drive was painfully slow.
I had a 2x Sony CDROM drive back in 1993 and that thing was really slow when I upgraded to Win95 so I remember
I ended up swapping that out for a 4x Mitsumi.

Other than that it performs okay for a 486 CPU.
The only real bottle neck was the 4x CDROM drive.

I selected components dated 1995. Except for the CDROM drive.
I might change the memory size to 8mb or 16mb.

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Reply 11 of 47, by Intel486dx33

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I ran some benchmark programs and this build is running SLOW.
It should be posting a topbench score of about 220
But it is only posting 165 ?

Other than that everything is working fine.

Any ideas ?
See my bios settings do they look okay ?

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Reply 12 of 47, by Disruptor

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Your BIOS settings are very poor.
Try to change and test up to each of the settings:
L1 Cache Update Scheme: Wr-Back.
L2 Cache Update Scheme Wr-Back.
-> Test Floppy Read & Sound Card digital sounds.
L2 Cache Wait States: Should be good for 2-1-1-1, if not 3-1-1-1
DRAM Read/Write Wait States: Both may be set to 0
Early Cache Write Mode: Enabled (? I am not sure)
Slow Refresh: May be set to 1

System / Video BIOS Cacheable: Yes
Gate A20 Option: Fast

Reply 13 of 47, by buckeye

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Curious as to what model LCD you're using for this particular build? How does it look with DOS games?

Reason I'm asking is because I about given up on trying to find CRT's in decent shape and on the look out
for LCD's that look decent as far as dos games go.

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Reply 14 of 47, by Intel486dx33

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Okay, I was able to get this to run faster with a topbench score of 198.
Ideally, I would like to get up to 220 at least.
Maybe I can tweak the bios a little more.

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Reply 16 of 47, by Intel486dx33

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Here are the bios settings I am using.

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Reply 18 of 47, by Disruptor

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Intel486dx33 wrote on 2022-01-10, 22:10:

Here are the bios settings I am using.

Please disable Auto-Config.
Ah you still use the 3-2-2-2 L2 timing and the 2 / 2 DRAM waitstates 🙁
This still expalins the snail performance.

Reply 19 of 47, by Intel486dx33

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Disruptor wrote on 2022-01-11, 02:51:
Please disable Auto-Config. Ah you still use the 3-2-2-2 L2 timing and the 2 / 2 DRAM waitstates :( This still expalins the snai […]
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Intel486dx33 wrote on 2022-01-10, 22:10:

Here are the bios settings I am using.

Please disable Auto-Config.
Ah you still use the 3-2-2-2 L2 timing and the 2 / 2 DRAM waitstates 🙁
This still expalins the snail performance.

I have able to score 199 on topbench but thats it.
Even if change those settings the benchmark score remains the same.
I am using 32mb of FPM -60ns RAM.