[comp.sys.ibm.pc.hardware] PIC, reading keyboard - help needed

mh2o+@andrew.cmu.edu (Michael Lorenz Holling) (03/16/91)

Does anyone have a description of how the programmable interrupt
controller is supposed to work?  I'm modifying a MIDI card so I need
more information on how to control hardware interrupts.  Specifically, a
theory of how the PIC handles incoming hardware interrupts, how to
program it, and what information is available from it.

Also, how can you read the keyboard if the keyboard service routine must
be disabled?

Please send all replies to mh2o@andrew.cmu.edu

Thanks,
- Mike