Specifications

Application Examples
Software Outline
INITPIC Routine
BEGIN
Initialize the Interrupt Controller
Send ICW1 - Edge triggered, Single, ICW4 needed
Send ICW2 - Vector addresses 8 - 15
Send ICW3 - No slave interrupt controllers
Send ICW4 - SFNM, Buffered Master, Normal EOI,
8088
Send OCW1 - Unmask all interrupts for STD DOS use
END
Initialization of the Interrupt Vector
BEGIN
Initialize low memory with a pointer to the interrupt service
routine (ISR)
Write offset of ISR to lower word
Write code segment to next higher word
(This sequence would repeat for more than one ISR)
END
4-4