berion wrote on 2024-06-22, 23:50:

Ok I'll buy a 100 MHz Coppermine as the one I tried before was a 133 Mhz 866.
We'll see what happens. Thank you for all your help and support.

So, I'm pretty sure that if you find the right combination of HW, the card will work.
I think you are using the wrong components, and even if they work, they hardly work in that MB, you can do all the tests you want, but the result will always be the same, i.e. it doesn't start and no post code.
That is a Mendocino or Katmai CPU board (or how are they spelled?), you can try all the Coppermines you want, but they are electrically incompatible with the S.370, vice versa, if it was a Coppermine board, the Mendocinos also work, mine advise?
Buy at least one Celeron Mendocino, you should find them for cheap, if you're lucky, and find someone who has several, you can get some for the price of a pair (or could you even give them away?).
Then when the card is working, you can see if it works with Coppermine, if you skip this step, you will never know if it works, and all subsequent attempts could give the same result, moreover I think that by finding the right combination of working HW, you will be able start doing something with it, I imagine you'll want to play DOOM for example or simply load Windows 98 on it, and for that a Celeron 366 or 500, it doesn't make much difference, actually a 300A you can easily make it work at 450, and it would work more or less like a PII 450.

PC@LIVE wrote on 2024-06-23, 07:06:

So, I'm pretty sure that if you find the right combination of HW, the card will work. I think you are using the wrong components […]
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berion wrote on 2024-06-22, 23:50:

Ok I'll buy a 100 MHz Coppermine as the one I tried before was a 133 Mhz 866.
We'll see what happens. Thank you for all your help and support.

So, I'm pretty sure that if you find the right combination of HW, the card will work.
I think you are using the wrong components, and even if they work, they hardly work in that MB, you can do all the tests you want, but the result will always be the same, i.e. it doesn't start and no post code.
That is a Mendocino or Katmai CPU board (or how are they spelled?), you can try all the Coppermines you want, but they are electrically incompatible with the S.370, vice versa, if it was a Coppermine board, the Mendocinos also work, mine advise?
Buy at least one Celeron Mendocino, you should find them for cheap, if you're lucky, and find someone who has several, you can get some for the price of a pair (or could you even give them away?).
Then when the card is working, you can see if it works with Coppermine, if you skip this step, you will never know if it works, and all subsequent attempts could give the same result, moreover I think that by finding the right combination of working HW, you will be able start doing something with it, I imagine you'll want to play DOOM for example or simply load Windows 98 on it, and for that a Celeron 366 or 500, it doesn't make much difference, actually a 300A you can easily make it work at 450, and it would work more or less like a PII 450.

Thank you! Per the boards manual, it supports Coppermine so I went on eBay and got a slower Coppermine and a Mendocino Cel per your advice. We'll see that happens when they get here.

Cheers!

Ok maybe with a little luck, one of the CPUs might work, and I think that's likely.
Greetings

Update: Mendocino Celeron 400 did not post either. No codes. The only other thing I’m gonna try is do a hot swap do the bio chip with another motherboard I have and try to reflash it. Maybe it’s corrupted.

berion wrote on 2024-07-02, 16:35:

Update: Mendocino Celeron 400 did not post either. No codes. The only other thing I’m gonna try is do a hot swap do the bio chip with another motherboard I have and try to reflash it. Maybe it’s corrupted.

Do you have a scope? Or at least a somewhat decent volt meter? You can check for activity on BIOS ROM pins. If you see some weird (not close to 0V, not close to 5V either) voltages it usually means there is a signal there and you are seeing the mean DC value of that. It would tell you that CPU is trying to execute something from the ROM so it must be running, and that most likely both mobo bridges are OK (at least not completly dead).

These mobos often store some PnP config data in the Flash and if the write goes wrong it (like a power-off or reset happens right at that moment) can erase part of the BIOS code. I've seen that in the past and I've just brought back such a mobo from the dead by reflashing the BIOS in external programmer a week or so ago.

Hey There! In these 2 weeks' time I was able to replace the BIOS chip with a freshly flashed one. Unfortunately, I'm still not getting POST and not getting any codes on the POST card. I am starting to think there's something seriously wrong with this board.