That's a cool looking board - if I was into dual-CPU boards, I'd be all over it.

Sometimes Socket 5 boards have undocumented jumpers for 2x and 3x Multipliers, so look for something like that. Because it's a Socket 5 board, I'd rule out P55C Pentiums (w/MMX) unless the board supports split voltages for the CPUs. However, P54C Pentiums (w/o MMX) should be fine.

And regarding memory, have you tried 8 sticks of 64MBs?

For memory, it might be you need both CPUs to use all 4 banks? The manual doesn't state so, so it might not be the case.

Check the APIC jumper. For only 1 CPU it should be set to 'off' to adequately disable SMP.

Also, from what I could find, the motherboard uses the VLSI Wildcat chipset. If you find Socket5-Socket7 adapters, you might be able to drop some K6-2s or K6-IIIs in there. 😁

j^aws wrote:

That's a cool looking board - if I was into dual-CPU boards, I'd be all over it.

Sometimes Socket 5 boards have undocumented jumpers for 2x and 3x Multipliers, so look for something like that. Because it's a Socket 5 board, I'd rule out P55C Pentiums (w/MMX) unless the board supports split voltages for the CPUs. However, P54C Pentiums (w/o MMX) should be fine.

And regarding memory, have you tried 8 sticks of 64MBs?

So far it sees non MMX 200 when I put MMX in there it still displays standard.

Maeslin wrote:

For memory, it might be you need both CPUs to use all 4 banks? The manual doesn't state so, so it might not be the case.

Check the APIC jumper. For only 1 CPU it should be set to 'off' to adequately disable SMP.

Also, from what I could find, the motherboard uses the VLSI Wildcat chipset. If you find Socket5-Socket7 adapters, you might be able to drop some K6-2s or K6-IIIs in there. 😁

I tried it with 1 and 2 CPUs it still does the same thing.

Turboman wrote:

Maeslin wrote:

For memory, it might be you need both CPUs to use all 4 banks? The manual doesn't state so, so it might not be the case.

Check the APIC jumper. For only 1 CPU it should be set to 'off' to adequately disable SMP.

Also, from what I could find, the motherboard uses the VLSI Wildcat chipset. If you find Socket5-Socket7 adapters, you might be able to drop some K6-2s or K6-IIIs in there. 😁

I tried it with 1 and 2 CPUs it still does the same thing.

Turboman wrote:

j^aws wrote:

That's a cool looking board - if I was into dual-CPU boards, I'd be all over it.

Sometimes Socket 5 boards have undocumented jumpers for 2x and 3x Multipliers, so look for something like that. Because it's a Socket 5 board, I'd rule out P55C Pentiums (w/MMX) unless the board supports split voltages for the CPUs. However, P54C Pentiums (w/o MMX) should be fine.

And regarding memory, have you tried 8 sticks of 64MBs?

I tried it just won't post for some reason it will not accept 64mb being in bank 0 and 1 only bank 0 and 2, I also tried 64 in bank 0 and 128x2 in bank 2 and it still displays 256mb. It seems to be caped for some reason unless a component on the board is bad. So far it sees non MMX 200 when I put MMX in there it still displays standard.

Maybe you need to update the BIOS to handle 512MB of RAM. I'm not sure why you'd want that much because on page 24 of the PDF manual, it mentions 0-256MB cacheable RAM using 1MB of cache.

Also check if you've mixed 32bit and 36bit sticks of Parity/non-Parity RAM, and mixed single and double-density RAM. Maybe this board is really picky. And of course check the BIOS settings for appropriate memory settings like Parity checks and whatnot. Not sure what else to suggest besides making sure the sticks are all identical and working on another board...

yea id stay at or below the ram cachable amount, ive noticed on many systems preformance drops when you go over that magic number.

I don't know if a bios update is possible since I couldn't find one.

rev A:
https://www.ultimateretro.net/en/motherboards/1777
rev C and newer:
https://www.ultimateretro.net/en/motherboards/1778

board pictures (front/back) and a dump of the current bios would be welcome.