Parker ACR2000, Hardware Manual

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Chapter 1, ACR2000 Motherboard Hardware Set-Up 15
ACR2000 MOTHERBOARD JUMPERS
Interrupt Select Jumper (J13)
The ACR2000 can be instructed to interrupt a PC host through the parallel bus by issuing
a SET 112 command in immediate mode or from within a program. Interrupt driven
software at the host level is an advanced topic and should only be attempted by someone
with a thorough knowledge of interrupt driven code.
In order for the PC to see the interrupt, the proper jumper selection from the following
table must be made. IRQ5 is usually a good choice since printer code seldom uses
interrupts and use of the secondary printer port (LPT2) is even rarer.
Level J13 Common Function
Disabled 1-3* Not Applicable
IRQ3 1-2 Secondary Serial (COM2)
IRQ4 3-4 Primary Serial (COM1)
IRQ5 5-6 Secondary Parallel (LPT2)
IRQ7 7-8 Primary Parallel (LPT1)
IRQ10 9-10 Reserved (unused)
IRQ11 11-12 Reserved (unused)
IRQ12 13-14 Reserved (unused)
IRQ15 15-16 Reserved (unused)
Table 1.8 ACR2000 PC BUS Interrupt Select Jumpers
Refer to Figure 1 for jumper location.
IMPORTANT NOTE:
When the ACR2000 is used in a Pentium

processor based PCI motherboard, the
selected interrupt must be configured in the PCI motherboard BIOS as a Legacy ISA
interrupt (or Used By ISA in some BIOS’), since the ACR2000 is an ISA board.