Using More Than One Pc Ieee Board; Figure 2-7. The Irq Jumper Block - Brainboxes IE-340 User Manual

PC IEEE Reference
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Figure 2-7. The IRQ Jumper Block.

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Select the IRQ line required by placing the jumper across
the appropriate pins.
If in doubt leave in the jumper in the factory set condition.
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Using More Than One PC IEEE Board.

Since each PC IEEE card can control up to 14 separate
IEEE devices it is not generally necessary to have more than one
PC IEEE board installed in the PC at any one time. However, it
is possible to control multiple IEEE buses from one Personal
Computer by installing several PC IEEE cards each controlling
its own IEEE bus.
The golden rules to follow to allow this are:-
i.) Ensure that each PC IEEE card is set to a different i/o
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________________________ NORMAL USE OF INTERRUPT.
FACTORY SET POSITION. NO IRQ.
IRQ2 E.G.A. GRAPHICS CARD.
IRQ7 PARALLEL PRINTER PORT.
IRQ5 HARD DISK.
IRQ4 RS232C SERIAL PORT NUMBER 1.
IRQ3 RS232C SERIAL PORT NUMBER 2-8.
Installation Guide.
Chapter 2