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Dual Pentium Pro Build Thread

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Reply 120 of 185, by red-ray

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Mentat-vvo wrote on 2020-05-24, 04:19:
red-ray wrote on 2020-05-23, 16:55:

My guess is that it's using a x2.5 multiplier and the FSB is about 100 MHz.

That's correct. 100x2.5. Asus P2B-F is unstable @ 103. Goin to repeat the same with Asus P3B-F.

Given CPUZ got the FSB wrong I am wondering how SIV will do, please will you run SIV32L V5.49 Beta-03 or later on Windows NT4/2K/XP/2003 and post the two Menu->File->Save Local files so I can check it's correct and it not fix it?

SIV32L will also run on Windows 9X, but will not do as well as it does on NT4/2K/XP/2003.

Last edited by red-ray on 2020-05-28, 20:08. Edited 2 times in total.

Reply 121 of 185, by Mentat-vvo

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It works. A file was generated, but a cheap flash usb drive was accidentally broken when I tried to pull it out. Will post a file tomorrow

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Dual Opteron285/4Gb/RadeonHD3850/Audigy
2x P3Xeon900-2M/1Gb/2xVoodoo2/Q-DCC/AWE32
2x PPro@250-1M /TyanS1834D /512Mb/VBanshee
K6III+400@624/5MVP3G2/256Mb/GF3ti200@500
Iskra 1031 Issue 2 - i8086 PC/XT Clone from USSR

Reply 122 of 185, by red-ray

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Mentat-vvo wrote on 2020-05-26, 09:17:

It works. A file was generated, but a cheap flash usb drive was accidentally broken when I tried to pull it out. Will post a file tomorrow

Thank you, in general SIV32L looks to have done OK and I was pleased to see SIV detected then reported the LM78 sensor chip, but I spotted a few funnies that I will look into when I get the two save files. Please include the .DMI file which is a binary dump of the raw BIOS data the [Machine] panel reports.

I was surprised SIV32L failed to display the Cyrillic, I wonder if the default codepage is 1252 (ANSI - Latin I) rather than 1251 (ANSI - Cyrillic), is it? It's a shame the system is not running Windows XP as SIV32X is a Unicode build so should not have this issue.

The GPU fan PWM being reported at 100% when there no clocks is unexpected and once I check Menu->Machine->GPU Info in the save file I suspect all will become clear.

Last edited by red-ray on 2020-05-26, 14:30. Edited 1 time in total.

Reply 123 of 185, by H3nrik V!

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red-ray wrote on 2020-05-19, 22:19:
luckybob wrote on 2020-05-19, 19:35:

I'd spend that much on that motherboard in a heartbeat. EXCEPT it doesn't appear to have the cpu support brackets. Something that can NOT be ignored with slot-2.

In years gone by I did and still have a boxed Supermicro S2QR6 4 x Slot 2 motherboard with all the VRMs + brackets + … sitting on the shelf waiting to be used. When I got it I was overly keen to have a four socket system, but as I now have HP DL580 G5 + G4 + Dell PowerEdge 6300/450 systems and suspect I will never use the S2QR6 , maybe it's time to put it on eBay.

Oh my, what a monster!

Please use the "quote" option if asking questions to what I write - it will really up the chances of me noticing 😀

Reply 124 of 185, by Mentat-vvo

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A Tyan mobo is about to accept dual PPros.

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This HP/Compaq monster, unfortunately, needs exact info on the correct ATX power plug pinout or the original power supply unit. The PS unit from Dual Slot2 mobo from HP/compaq did not do the trick.

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P.s.
A collection of PPro-capable BIOSes is extended by Asus P3B-F. If someone here have original Asus or other Slotket8, I can share the bios file. The P3B-F’s bios can even handle overvoltage up to 3.5v!

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Dual Opteron285/4Gb/RadeonHD3850/Audigy
2x P3Xeon900-2M/1Gb/2xVoodoo2/Q-DCC/AWE32
2x PPro@250-1M /TyanS1834D /512Mb/VBanshee
K6III+400@624/5MVP3G2/256Mb/GF3ti200@500
Iskra 1031 Issue 2 - i8086 PC/XT Clone from USSR

Reply 126 of 185, by Mentat-vvo

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chrismeyer6 wrote on 2020-07-20, 13:06:

That's going to be a fun system once it's done. What are you using for cpu cooling?

AMD coolers (thin ones should fit) AM2 and compatible. Original ones are also supported, but I do not have them.

My slotkets are designed to have holes for the backplate.

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Last edited by Mentat-vvo on 2020-08-04, 00:15. Edited 1 time in total.

Dual Opteron285/4Gb/RadeonHD3850/Audigy
2x P3Xeon900-2M/1Gb/2xVoodoo2/Q-DCC/AWE32
2x PPro@250-1M /TyanS1834D /512Mb/VBanshee
K6III+400@624/5MVP3G2/256Mb/GF3ti200@500
Iskra 1031 Issue 2 - i8086 PC/XT Clone from USSR

Reply 129 of 185, by PC Hoarder Patrol

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Mentat-vvo wrote on 2020-07-20, 13:00:

This HP/Compaq monster, unfortunately, needs exact info on the correct ATX power plug pinout or the original power supply unit. The PS unit from Dual Slot2 mobo from HP/compaq did not do the trick.

Isn't that the motherboard from a Compaq AP550 Professional Workstation (it's an OEM version of the Intel OR840) - you can find info on the PSU and pinouts in this thread Weird Compaq Motherboard

Reply 130 of 185, by chinny22

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So you'll have dual blacktops in the Asus board and dual goldtops in this.
You have a really nice dual dual PProp setup 😀

Reply 131 of 185, by gdjacobs

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chinny22 wrote on 2020-07-21, 08:52:

So you'll have dual blacktops in the Asus board and dual goldtops in this.
You have a really nice dual dual PProp setup 😀

Time to find a period copy of CATIA.

All hail the Great Capacitor Brand Finder

Reply 132 of 185, by donkom

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Mentat-vvo - I signed up for an account on Vogons just for this thread. I'd absolutely love to purchase some of your slotkets and pick your brain about some crazy build ideas. What is the most modern chipset you've been able to get the Pentium Pros to function with? Any possibility of a Socket 8 - Slot 2 adaptation? Keep up the great work!

Reply 133 of 185, by gbeirn

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Mentat-vvo wrote on 2020-07-20, 13:11:
AMD coolers (thin ones should fit) AM2 and compatible. Original ones are also supported, but I do not have them. […]
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chrismeyer6 wrote on 2020-07-20, 13:06:

That's going to be a fun system once it's done. What are you using for cpu cooling?

AMD coolers (thin ones should fit) AM2 and compatible. Original ones are also supported, but I do not have them.

My slotkets have holes for the backplate.
CE08CF45-452E-4A03-87DA-BD05419B0399.jpeg

Can you tell me a bit more about this? You reverse engineered a socket 8 slotket is that correct?

Do you have the gerber files available? Or the PCBs for sale?

I have dozens of NOS socket 8 sockets and would be interested in producing some of these.

Thanks!

Reply 135 of 185, by Mentat-vvo

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donkom wrote on 2020-08-02, 22:49:

Mentat-vvo - I signed up for an account on Vogons just for this thread. I'd absolutely love to purchase some of your slotkets and pick your brain about some crazy build ideas. What is the most modern chipset you've been able to get the Pentium Pros to function with? Any possibility of a Socket 8 - Slot 2 adaptation? Keep up the great work!

I believe Asus P3C-D is the most advanced mobo. Slot2 boards are so rare and are designed for the ideological successors of PPRos - P2 and P3 Xeons. No, I did not think about Slotket8S2. If one is interested in slotket8 - email me

sanastyuk@piboc.dvo.ru

Last edited by Mentat-vvo on 2020-08-03, 11:50. Edited 5 times in total.

Dual Opteron285/4Gb/RadeonHD3850/Audigy
2x P3Xeon900-2M/1Gb/2xVoodoo2/Q-DCC/AWE32
2x PPro@250-1M /TyanS1834D /512Mb/VBanshee
K6III+400@624/5MVP3G2/256Mb/GF3ti200@500
Iskra 1031 Issue 2 - i8086 PC/XT Clone from USSR

Reply 136 of 185, by Mentat-vvo

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maxtherabbit wrote on 2020-08-03, 04:32:

so did the tyan tiger with dual PPros work out?

Not yet, since I’ve found RED clone of ASUS P3V133 from Freeway. It is built on a VIA 694X chipset. Need to improve SuperPi result that Asus P3B-F could supply @ 2.5x100.

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The Red one

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Dual Opteron285/4Gb/RadeonHD3850/Audigy
2x P3Xeon900-2M/1Gb/2xVoodoo2/Q-DCC/AWE32
2x PPro@250-1M /TyanS1834D /512Mb/VBanshee
K6III+400@624/5MVP3G2/256Mb/GF3ti200@500
Iskra 1031 Issue 2 - i8086 PC/XT Clone from USSR

Reply 137 of 185, by Mentat-vvo

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gbeirn wrote on 2020-08-03, 03:46:
Can you tell me a bit more about this? You reverse engineered a socket 8 slotket is that correct? […]
Show full quote
Mentat-vvo wrote on 2020-07-20, 13:11:
AMD coolers (thin ones should fit) AM2 and compatible. Original ones are also supported, but I do not have them. […]
Show full quote
chrismeyer6 wrote on 2020-07-20, 13:06:

That's going to be a fun system once it's done. What are you using for cpu cooling?

AMD coolers (thin ones should fit) AM2 and compatible. Original ones are also supported, but I do not have them.

My slotkets have holes for the backplate.
CE08CF45-452E-4A03-87DA-BD05419B0399.jpeg

Can you tell me a bit more about this? You reverse engineered a socket 8 slotket is that correct?

Do you have the gerber files available? Or the PCBs for sale?

I have dozens of NOS socket 8 sockets and would be interested in producing some of these.

Thanks!

Yes, I have reverse-engineered Asus C-P6S1 and no, I’m not going to share the gerbers or unassembled slotkets. Slotket8 itself is only a half of the PPro Slot1 system. It also needs a support from the BIOS.

Dual Opteron285/4Gb/RadeonHD3850/Audigy
2x P3Xeon900-2M/1Gb/2xVoodoo2/Q-DCC/AWE32
2x PPro@250-1M /TyanS1834D /512Mb/VBanshee
K6III+400@624/5MVP3G2/256Mb/GF3ti200@500
Iskra 1031 Issue 2 - i8086 PC/XT Clone from USSR

Reply 138 of 185, by luckybob

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can confirm, he won't let me see the gerbers either!

^.^

That OR840 board would be SO COOL to run with ppro chips. but I personally would keep my expectations at the 440BX chipset level as I doubt newer boards have the voltage regulatiors for 3.3v

It is a mistake to think you can solve any major problems just with potatoes.

Reply 139 of 185, by pentiumspeed

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What's the reasons not disclosing the gerbers of this socket 8 slotkets? There are pretty good demand because people are still looking for all kinds of slotkets including high quality clone to make tualatin slokets without the issues of the previous low quality adapters?

Cheers,

Great Northern aka Canada.