We are we still stuck with only interrupts 00-15.
Theoretically, up to four PCI slots/motherboard PCI devices can share a single interrupt…
What causes this restriction?
Poor design and implementation of Plug and Play. Plug ‘n Prey simply doesn’t work for most loaded computers. Many average computers have problems as well. I have spent many many man-days solving the problems.
It seems that if I have 3 open slots, I should be able to install something and not have these kinds of problems.
I certainly agree, but the reality it that you probably will have problems.
What has to happen to change it?
A new standard/design that works. An "uprising"/demand large enough to gain the attention of the hardware and software bigshots. Larry