Com1 (03f8h) rs-232, Default: irq4, Com2 (02f8h) rs-232 – Lynx EPM-4 User Manual
Page 22: Default: irq3, Com3 (03e8h) rs-422/485, Default: disabled, Com4 (02e8h) rs-422/485, Gp timer 0, gp timer 1, watchdog timer, Pci interrupt a, b, c, and d, Default: irq11
CMOS Setup / Advanced Configuration
Configuration / Operation – 14
EPM-4 Reference Manual
COM1
(03F8
H
)
RS-232
Default: IRQ4
Allows you to disable or specify the IRQ used by internal UART1 on the ÉlanSC520
Microcontroller. When disabled, the IRQ and I/O space are freed.
COM2
(02F8
H
)
RS-232
Default: IRQ3
Allows you to disable or specify the IRQ used by internal UART2 on the ÉlanSC520
Microcontroller. When disabled, the IRQ and I/O space are freed.
COM3
(03E8
H
)
RS-422/485
Default: Disabled
Allows you to disable or specify the IRQ used by UART1 on the SMSC FDC37B727 Super I/O.
When disabled, the IRQ and I/O space are freed.
COM4
(02E8
H
)
RS-422/485
Default: Disabled
Allows you to disable or specify the IRQ used by UART2 on the SMSC FDC37B727 Super I/O.
When disabled, the IRQ and I/O space are freed.
GP
T
IMER
0,
GP
T
IMER
1,
W
ATCHDOG
T
IMER
Default: Disabled
These internal SC520 devices can be disabled or enabled by assigning an IRQ. Enabling these
devices only sets up the IRQ assignment; it is up to the user to set up device operation. Refer to
the ÉlanSC520 Microcontroller User's Manual for details.
PCI
I
NTERRUPT
A,
B,
C,
AND
D
Default: IRQ11
These options allow manual IRQ routing of PCI devices.
Note:
PCI devices can share an interrupt. In most cases, the cost of doing this is slightly decreased
system performance and slightly increased interrupt response time.