Hi! First post here.

Due to a mistake I accidentally corrupted the original ROM for my motherboard, model PAT48PG rev 0.30. I have been trying to flash it with versions I have found but only with none or partial success. The socket supports dip 28 and the ROMs i have available are 64 KB ones, 27C512.

I have tried these below, no success.

With these the motherboard can not post at all, my post card does not alter between codes here at all. I think there are actually for the rev 2 of this motherboard, but I can not verify that.
https://theretroweb.com/motherboards/s/tmc-my … at48pg-ver-0-30

With the AMI version from here I have partial success but not enough to boot into a working system. It complains about the keyboard controller and I can enter the bios but the keyboard works only partially. It is also slow to get to the bios boot screen.
https://mycomp-tmc.com/b486.htm

Does anyone have other versions that I can test? Or other solutions? I have the option to erase and program myself, but if there are any recommended settings to use in this situation im happy to test. I have a TL866II plus.