Re: IO delay, port 0x80, and BIOS POST codes

Alan Cox (alan@lxorguk.ukuu.org.uk)
Thu, 14 Mar 2002 22:56:46 +0000 (GMT)

> Yeh? Then "how do it know?". It doesn't. I/O instructions are ordered,
> however, that's all. There is no bus-interface state machine that exists

How about because
o The intel docs say out is synchronizing
o HPA works for an x86 clone manufacturer

Alan
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