Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern AMD64 with MCP51 laptops

Andi Kleen
2007-12-07T14:54:41Z

> My machine in question, for example, needs no waiting within CMOS_READs
> at all. And I doubt any other chip/device needs waiting that isn't

I don't know about CMOS, but there were definitely some not too ancient
systems (let's say not more than 10 years) who required IO delays in the
floppy driver and the 8253/8259. But on those the jumps are already
far too fast.

-Andi