On Thu, 20 Sep 2001, tres wrote:
> Linux dev MS dev IRQ Address
> /dev/ttyS0 COM1 4 0x3F8
> /dev/ttyS1 COM2 3 0x2F8
> /dev/ttyS2 COM3 5 0x3E8
> /dev/ttyS3 COM4 7 0x2E8
>
> /dev/lp0 LPT1 7
> /dev/lp1 LPT2 5
>
> Mark is correct as far as the book but this is the more common
> setup for devices with many serial devices. Avoid the printer
> conflicts listed above though. Network, sound, and specialized
> controlers can use almost any IRQ they want.
What Tres says reminds me of something. No matter what settings you put
your COM3 and COM4 in, by default the Linux will use IRQ4 and IRQ3,
respectively (unless your distribution is set otherwise). To set COM3 and
COM4 IRQs, you'll need to run `setserial <options>` each time you boot.
-Mark
--
Mark K. Kim
http://www.cbreak.org/mark/
PGP key available upon request.
