Re: Linux Post codes during runtime, possibly OT
H. Peter Anvin (firstname.lastname@example.org)
Sun, 28 Jan 2001 02:18:19 -0800
Rogier Wolff wrote:
> Ok. I've thought about it some more, but I don't care enough about
> this issue to do the painstaking legwork: I don't have one of those
> POST-code indicators on port 0x80.
> I've made the "pause" in outb_p just a few (*) ns slower, because it
> now loads a variable before outputting the value to port 0x80. As the
> whole idea about this is "pausing", making it a bit slower shouldn't
> matter too much. I've tested it: It compiles, it boots.
> I'm not too familar with the syntax of the "asm" statement. So I may
> illegally be modifying the AX register. I don't care enough about this
> to figure it out right now.
It is; you'd have to specify "eax" as a clobber value, and that is
And you're still overwriting the POST value written by the BIOS.
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