com3 & com4 -> tty2 & tty3

[Doug Salot]

>> > >You can not use IRQ2 for anything under Unix - it is already used by the
>> > >system.
>> > 
>!  I would also like to hear why you can't!
>
>If you have a PC/AT style bus, IRQ2 is not even a valid bus signal!
>Thus, a guess, is that you are not using a true AT bus compatible machine
>or *your driver is polling* and not using the interrupt for a d*mn thing!

(I thought I already posted an explanation; guess it didn't go out.)

Look at the bus signals again.  IRQ 2 on the PC (or XT) is mapped to
IRQ 9 on the AT.   If you have a device that uses IRQ 2, simply tell
the driver to expect interrupts on IRQ 9.

The real AT IRQ 2 is used to cascade the second interrupt controller,
giving you 15 interrupt lines on an AT versus 8 on a PC.
-- 
doug at feedme.UUCP || ...{zardoz,dhw68k}!feedme!doug || doug%feedme at uunet.uu.net
Doug Salot,  The Poor Man's Renaissance Man  (I read *all* of the newsgroups.)