Quote Originally Posted by VASkO
tictac,

would you be so kind and tell something more about this? i would like to build my custom isa option rom and include it into the bios image, but i have a few questions. Which utility to program in do you use to build these option roms? I need to change the Bypass Max, located at offset 0x93h, bit 1-3 to 111 (or 7x) and the max async latency located at offset 0x94h bit 0-3 set to 1000 (8ns). I need that to include into BIOS cause else i can't run 7-3-3-2.5 timings on TCCD. If I use A64tweaker and set that at startup together with reconfiguration of timings from 8-4-4-3 to 7-3-3-2.5, it freezes. It doesn't freeze if i first set those two parameters and then edit the timings, but i must do that every time windows boots up, so I guess it would be a solution, to set those two in the isa option rom (i could set agressive timings in BIOS then too i think).

please answer tictac, i was searching the net for how to program isa option rom but i didn't find anything.
Compile it with Masm

Code:
@echo off
ml /AT %1.asm /Fe %1.bin /link /TINY