lkml.org 
[lkml]   [2002]   [Mar]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: IO delay, port 0x80, and BIOS POST codes
Date
From
> Unfortunately we can't read this information because Linux uses
> port 80 as "dummy" port for delay operations. (outb_p and friends,
> actually there seem to be a more hard-coded references to port
> 0x80 in the code).

The dummy port needs to exist. By using 0x80 we have probably the only
port we can safely use in this way. We know it fouls old style POST
boards on odd occasions.

Alan

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:25    [from the cache]
©2003-2011 Jasper Spaans