Register Description For The Interrupt Control Registers - National Instruments PC-DIO-96 User Manual

Chapter 4 Register-Level Programming

Register Description for the Interrupt Control Registers

There are two interrupt control registers on the PC-DIO-96. One of these registers has individual
enable bits for the two interrupt lines from each of the 82C55A devices. The other register has a
master interrupt enable bit and two bits for the timed interrupt circuitry. Of the latter two bits,
one bit enables counter interrupts, while the other selects counter 0 or counter 1. The bit maps
and signal definitions are listed as follows.
© National Instruments Corporation 4-5 PC-DIO-96 User Manual