#SCSI Interface
2 messages in this thread
I am considering a purchase of a CD ROM that uses a SCSI Interface. My concern
is over available IRQ's on my PC. What IRQ's are available on a SCSI Interface,
and can it share an IRQ with another device ? I am currently looking at a Texel
3024 with a Trantor interface card.
As for my PC, all of my IRQ's are used up 'till IRQ 9.
Thomas,
I'm new at all of this, but have some of the info in front of me, so I can help
out a little.
I have a BusLogic SCSI adapter BT-445S. The book for it says I can select from
IRQs 9,10,11,12,14,or 15. The default is 11. I'd watch out for 9, as there is
something about IRQ 2 'leap-frogging' to 9.
It's my understanding that the 'traditional' IRQs we hear about most were
available on earlier PCs and XTs. Since ATs, more have been available, but
adapter manufacturers have stuck to the old ones to be sure and be compatible
with XTs. I think they're getting away from that now.
As far as sharing IRQs, I think the general feeling is that no one would
recommend it. A more reasonable response might be to try it. At least have an
up-to-date chart with interrypts and addresses of everything that's hitched to
your computer listed.
For instance, I have a MIDI port and LPT1 both sharing IRQ 7. And I'll be
darned, IRQ 3 is free! <g>
I hope you have good results. I got all my ducks in a row and plugged
everything together and the computer won't boot! 🙁
Dave McKeen