Bitfields for AMD-645 ISA Bus Control register:
Bit(s)	Description	)
 7	extra delay on ISA commands (default is disabled)
 6	enable extended ISA bus ready (default is disabled)
 5	ISA slave wait states (0=4 wait states [default], 1=5 wait states)
 4	chipset I/O wait states (0=2 wait states [default], 1=4 wait states)
 3	I/O recovery time enabled
 2	enable extended ALE
 1	no ROM wait states (default is clear, 1 wait state)
 0	enable ROM writes
SeeAlso: #01011