[net.micro.pc] Microsoft mouse and two comm ports

sdyer@bbncc5.UUCP (Steve Dyer) (10/15/85)

I thought by purchasing a bus version of the Microsoft Mouse, I would be
able to continue using both COM1 and COM2.  Turns out that the recommended
interrupt level for the mouse when installed on the PC/AT is the same as
COM2, thus (I think) preventing simultaneous use of the mouse and COM2.  I
have an IBM serial/parallel card as COM1, and an AST Advantage with a
disabled COM2.  Is anyone familiar enough with the AT's interrupt levels
and its complement of available hardware to suggest another interrupt line
which I could use safely with the Microsoft Mouse?
-- 
/Steve Dyer
{harvard,seismo}!bbnccv!bbncc5!sdyer
sdyer@bbncc5.ARPA

langet@ecn-pc.UUCP (Timothy Lange) (10/18/85)

You should be able to use the mouse by setting the jumper on the
mouse board to use interrupt 2 (IRQ2).  I don't know of anything
on the AT that will interfere.  If you have more than two comm
ports then they will try to use interrupts 5 and 2, 5 is usually
used for a hard disk adapter, so 2 is the only free one.

On another note, there are comm boards that support multiple
ports on one interrupt, I don't know the brands.
-- 
Tim Lange		Engineering Business Offices
317-494-5338		Rm 120 Engineering Administration Bldg.
Purdue University 	West Lafayette, IN  47907
{decvax|harpo|ihnp4|inuxc|seismo|ucbvax}!pur-ee!langet