From: mw@rrz.Uni-Koeln.DE (Markus Wischerath)
Subject: Re: Soundblaster IRQ and Port settings
Organization: Reg. Computing Center, University of Cologne
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In article <pdb059-210493145738@kilimanjaro.jpl.nasa.gov>, pdb059@ipl.jpl.nasa.gov (Paul Bartholomew) writes:

|> > When two or more devices in an ISA bus PC share an interrupt, it's
|> > because they're implemented by a single card.
|> 
|> Interesting.  Would you care to explain to me then, how my SoundBlaster
|> Pro card and my printer card are sharing IRQ 7 successfully?  I assure
|> you that they are both set to IRQ 7 and that I have no problem.  My
|> computer is a DTK 286-12 IBM clone.
|> 
|> Paul Bartholomew
|> pdb059@ipl.jpl.nasa.gov
|> 
You can configure devices for the same IRQ as long as you don't use them
*simultaneously*, under Dos at least. Both LPT1: and SB just sit there until
you tell them to do something. You can't configure a SoundBlaster for IRQ7
if you got an Ethernet Card which hits that IRQ a thousand times or so per 
second.

Markus