ACT apricot - Description; General

INTERRUPT CONTROLLER
DESCRIPTION
General
The device connections to the interrupt request lines of
the PIC are illustrated on the block diagram on Figure land
expanded in more detail below. An active interrupt request
is
indicated by a logichigh state on the appropriate request
line.
8089 Interrupt from Input/Output Channell of the
SINTRl 8089 Input Output Processor (lOP).
8089
Interrupt from Input/Output Channel 2 of the
SINTR2 8089 Input Output Processor.
INT2 Interrupt control line wired to both Expansion
Slots.
INT3 Interrupt control line wired to both Expansion
Slots.
FDC
INT Interrupt from the Floppy Disk C'ontroller.
SIO INT Interrupt from the SIO of the Serial Interface.
TMR
OUTO
Output from Counter 0 of the Programmable
Interval Timer (TMR). .
8087
INT Interrupt from the Numeric Data Processor
(NDP)