Application Examples
System Configuration
The following example assumes that a ZT 8809A and a ZT 8840 are
present in the STD bus card cage. All jumpers are assigned in the
factory default configuration except the following:
1.
ZT 8809A - No jumper changes required.
2.
ZT 8840 - Remove jumpers W1 - W3 to assign the board to I/O
address E0h.
Software Outline
INIT_PIC_8809A Routine
BEGIN
Initialize the 8809A Interrupt Controller
Send ICW1 - Edge triggered, Cascade, ICW4 needed
Send ICW2 - Vector addresses 8 - 15
Send ICW3 - Slave interrupt controller on IR2
Send ICW4 - SFNM, Buffered Master, Normal EOI, 8088
Send OCW1 - Unmask all interrupts
END
INIT_PIC_8840 Routine
BEGIN
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