[rescue] Some days ....
alaric at caerllewys.net
Sun Jun 8 13:10:17 CDT 2003
On Sun, Jun 08, 2003 at 10:52:03AM -0400, Curtis H. Wilbar Jr. wrote:
> >From: Phil Stracchino <alaric at caerllewys.net>
> >To be fair, it hasn't been that bad in a looooooooong time .... and
> >even then, at least half of it was the dain-brammaged OS's fault.
> ummm... IMHO PC hardware is seriously lacking in IRQs and DMA channels....
Amen, brother. IBM really copped out by just daisychaining two
8-channel IRQ chips in the AT architecture. They should have built in a
single 32-channel (or better yet, 64-channel) chip, IMHO.
> I've also had an issue with motherboard with lots of built in goodies
> consuming so many IRQ resources that adding hardware was easiest by
> disabling onboard devices that I didn't need (second com port).
Yup. Older IBM Thinkpads were particularly bad about this ... they
shipped with so many integrated peripherals, and a BIOS so anal about
interrupt sharing, that it was impossible to simultaneously enable all
of them at once.
(To make matters worse, the application that configured the BIOS was a
Windows app, so if the BIOS settings got hosed and the machine wouldn't
boot, you were SOL.)
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