The DICT Development Group
1 definition found
for programmable interrupt controller
From The Free On-line Dictionary of Computing (30 December 2018) :
Programmable Interrupt Controller
PIC A special-purpose integrated
circuit that functions as an overall manager in an
interrupt driven system. It accepts requests from the
peripheral equipment, determines which of the incoming
requests is of the highest priority, ascertains whether the
incoming request has a higher priority value than the level
currently being serviced, and issues an interrupt to the CPU
based on this determination.
PICs typically have eight interrupt lines, and two PICs are
often cascaded to provide 15 available interrupt lines.
See also: Advanced Programmable Interrupt Controller.
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