Xycom XVME-956 Series Manual page 46

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Implement your interrupt selections by configuring the appropriate jumper group, according to
Table 3-9.
Within a given jumper group, shorting a particular jumper pin pair assigns a corresponding interrupt,
as shown in Table 3-10.
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PAIR
SHORTED
INTERRUPT
You are not required to assign an interrupt to a port, however, you will assign interrupts to ports that
have incoming data. T h e parallel port does not usually need to have an interrupt if it is used solely as
an output port, such as a printer port. To assign an interrupt to a port, short the corresponding pins on
the jumper group for that port. B e sure to short pins 13/14 which will connect a pull-down resistor to
the interrupt line.
If COM1 (Port 3F8) or COM2 (Port 2F8) is selected for use on the XVME-956/400, check the BIOS
set-up menu on the XVME PC/AT. Type < C T R L > < A LT > S to get into set-up. Then disable the
internal COM port by setting it to off.
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Table 3-9. Interrupt Jumper Groups
CONNECTOR
J1 RS232C serial port COMA
J2 Optional serial port COMB
J3 Parallel port
Table 3-10. Interrupt Selection Jumper Pins
1/2 3/4
IRQ2 IRQ3
PORT
5/6 7/8 9/10
IRQ4 IRQ5 IRQ6 _ I R Q 7
956 Manual
August 1994
JUMPER
GROUP
W4
W5
W6
11/12 13/14
Pull Down
3-7