Tyan Trinity 400 S1854 CPU upgrade

[pjr]

I have a 667EB Slot 1 CPU on a Trinity 400 S1854 with a stamp of 9990YA near the power supply. I've never flashed the bios on the board, purchased it in December 1999. Does this stamp mean I'm limited on the Slot 1 upgrade I can do for the processor? It appears according to the Tyan compatibility charts, 733 is the max. Is there any way around that? Perhaps with a BIOS flash to 1.07.
Speaking of the BIOS flash, how difficult is it to flash to
1.07? The instructions on the Tyan site are a little confusing.
It appears you use a startup disk to boot, put the bios and the
flash utility on a separate disk and run a command line with a
number of switches, including clear CMOS. Here's the line I
found:

flashv73 1854v107.bin /py/sn/f/cc/r

At least that's what I found on one page at the site. Do you
know if this means you do not have to mess with the jumpers for
clearing CMOS, since cc is a clear CMOS command. Also, once you
flash the BIOS do you have to reset everything in CMOS when you
first boot up again.

Thanks,
pjr

 

[blackhawk]

Its been awhile and I'm vague on the details but no one else has come up with an answer. I recall a site in england with a lot of useful info from users. I suggest you do a search back a year and it should come up. I flashed mine and dont remember any of that hassle, just the standard bootable floppy with the bios loaded on it as well. Start in dos and type required command and everything happens for you. Be sure to print out the instructions on paper before hand and dont do it unless you're clear.

It was a nice board but not an overclocker friendly one. Took a while to sell it too and its probably chugging along, stable as hell with that celeron 500 today.

Good luck and do the search for the mb.