System Resources and Maps
EPM-14 Reference Manual
38
Interrupt Configuration
The EPM-14 has the standard complement of PC type interrupts. Four non-shared interrupts are
routed to the PC/104 bus, and up to four IRQ lines can be allocated as needed to PCI devices. The
following tables show the default and allowed interrupt settings. There are no interrupt
configuration jumpers. All configuration is handled through CMOS Setup. If your design needs
to use interrupt lines on the PC/104 bus, IRQ5 and IRQ10 are recommended. (IRQ3 and IRQ4 are
normally used by COM ports on the main board.)
Table 18: EPM-14 IRQ Settings
z
= default setting
|
= allowed setting
IRQ
Source
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Timer 0
z
Keyboard
z
Slave PIC
z
COM1
|
z
{
{
|
|
COM2
z
|
|
|
|
|
COM3
|
|
|
|
|
|
RTC
z
Mouse
z
Math Chip
z
IDE PATA
z
IDE SATA
z
ISA IRQ10
|
ISA IRQ3
|
ISA IRQ4
|
ISA IRQ5
|
ISA
IRQ6
|
ISA IRQ7
|
ISA IRQ9
|
PCI
INTA#
|
|
|
z
|
PCI
INTB#
|
|
|
z
|
PCI
INTC#
|
|
|
z
|
PCI
INTD#
|
z
|
|
|
Table 19: PCI Interrupt Settings
z
= default setting
|
= allowed setting
PCI Interrupt
Source
INTA#
INTB#
INTC#
INTD#
Video
z
USB 2.0
z
USB 1.1
z
Ethernet 0
z
Ethernet 1
z