Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern AMD64with MCP51 laptops

[H. Peter Anvin]

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...

	-hpa
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