Table 2-5 lists the jumper settings to set the hard disk controller IRQ’s. Leave
the PCI IDE controller set to IRQ14 unless you are using a SCSI controller
and need to free up an unnecessary IRQ, or if you want to use the ISA IDE
controller as the primary IDE controller.
Jumper
Function
Setting
W13
Primary IDE uses IRQ14 (default)
Primary IDE uses IRQ15
1-2
2-3
J19
Secondary IDE uses IRQ15 (default)
Secondary IDE uses IRQ14
2-3
1-2
Table 2-5 PCI IDE IRQ Selection
Table 2-6 lists the jumper settings to select the parallel port DMA channel for
ECP mode.
DMA Channel
Jumper
None
(default)
DMA1
DMA3
W6
open
1-2
2-3
W7
open
1-2
2-3
Table 2-6 Parallel Port DMA Channel Selection
Table 2-7 lists the jumper settings to select the parallel port IRQ settings for
ECP mode.
Jumper
Function
Setting
W8
Parallel port does not use IRQ (default)
Parallel port uses IRQ5
Parallel port uses IRQ7
open
2-3
1-2
J76
Parallel port in Non-ECP mode (default)
Parallel port in ECP mode
open
close
Table 2-7 Parallel Port IRQ Selection
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Micronics M4Pi System Board Manual
