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Chapter 3 - SSP Installation (XVME-956/400)
PC/AT
PORT
SSP
PORT
I/O
ADDRESS
PINS SHORTED
1/2
3/4
5/6
7/8
9/10
11/12
13/14
COM3
COMA
3E8
short
COM4
COMB
2E8
short
short
LPT 2
Parallel
278
short
short
PORT
INTERRUPT
LPT1
LPT2
COM1
COM2
COM3
COM4
IRQ7
IRQ5
IRQ4
IRQ3
IRQ4
IRQ3
Table 3-7. Xycom Recommended I/O Address Selections
3.3.2 I n t e r r u p t Selection
Each port can be assigned to an interrupt in the range IRQ2 - IRQ7. Within this range, there are no
restrictions on the choice of interrupts, and the interrupt assignments must be unique.
Table 3-8 lists some commonly used I/O port interrupts.
Table 3-8. Common
I/O
Port Interrupts
3-6
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