On 11-12-07 02:25, H. Peter Anvin wrote:
David Newall wrote:Where did the 8us delay come from? The documentation and source is careful not to say how long the delay is. Would changing it to, say 1us, be technically wrong? Is code that requires 8us correct?
I think a single ISA bus transaction is 1 µs, so two of them back to back should be 2 µs, not 8 µs...
Sigh. And now where do these _two_ transactions come from? (and yes, see Alan's folowups, a transaction on a spec bus is 1 us).