Timing measurements

Time from !RESET going low to address bus asserted to 0: 71.32us Time from !RESET going low to RD asserted to 0 for the first time: 72.55us

Time between address bus asserted to 0 and RD asserted to 0 the first time: 1.23us Time between RD going low and BIOS chip emitting the proper byte out: 40ns Time between two BIOS reads at boot time: ~550ns Time between two BIOS or PIO reads after bus timings being set: ~175ns