
Amiga also shared IRQs
The IRQ number was related to the priority of the interrupt. I recall that the serial port operated on 2 IRQs - the higher priority IRQ was for receiving, the lower one for sending.
Darrell Spice, Jr.
[link|http://home.houston.rr.com/spiceware/|SpiceWare] - We don't do Windows, it's too much of a chore