lkml.org 
[lkml]   [2008]   [Jan]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] x86: provide a DMI based port 0x80 I/O delay override.
> How do you find out the speed of the ISA bus?  AFAIK there is no
> standardized way to do that. On the Geode SC2200 the ISA bus speed is

It is per chipset magic registers. Fun fun fun

> usually the PCI clock divided by 4 giving 33MHz/4=8.3MHz or
> 30/4=7.5MHz, but with no external ISA devices it's possible to
> overclock the ISA bus to /3 to run it at 11MHz or so. But without

12MHz is valid for ISA although not a good idea - even IBM issued some
systems with 12MHz ISA before discovering many vendors had assumed 8 was
it.


\
 
 \ /
  Last update: 2008-01-01 22:25    [W:0.421 / U:0.748 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site