DeadMan274 wrote on 2022-11-17, 16:16:
I have a pentium MMX 166 and 233 and they both work on this motherboard with 1997s bios. I have two shops / services that deal with programming bios. I will order a chip with a new bios, hope it works. And the old one will be a backup copy.
Hey, let us know how your story finishes.
I just bought two old systems yesterday, and when I was going to look inside I found a nice surprise! I have another one PC Chips M537DMA v.5.2A motherboard!!!
Exactly the same one of this thread! The same version, the same bios! I take a photo about the boot page and I can assure you that I have the exact bios!
Anyway I'm quite surprised, cause in this newer system that I have just bought, a Pentium 200MMX was running fine, overclocked to 225MHZ. Mine one can't boot with MMX processors, neither the AMD K6 200.
So first try I did is to swap the famous bios chip, to see if my "old" board was able to boot with the Pentium 200MMX. No. No boot.
I am thinking that my motherboard isn't fully ok, and as one user said here, probably it could have voltage problems. It's strange infact that to run a P133 I have to set the jumper to p55C processors, instead of setting it to P54C processors.
I can try to flash the bios that wasn't able to flash it through the new motherboard that I caught yesterday? Or the chip wasn't simply flashable?
I attach you the photo of the two boot screens.
Give me more ideas, thanks. And deadmen, let me know how's going with your card. I'm interested.
Computer lover since 1992.
Love retro-computing, retro-gaming, high-end systems and all about computer-tech.
Love beer, too.