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2.10.2 COM2 RS-232/422/485 selection (CN3)
This secondary port between CN2 and CN4 consists of a 14-pin, dual-in-
line, male header, and can be configured, via JP2 (q.v.), to operate in RS-
232, RS-422, or RS-485 mode.
The IRQs and address ranges for the COM ports are fixed. However, if
you wish to disable a port or change these parameters later, you can do
this in the system BIOS setup.
2.10.3 COM1 RS-232 port (CN4)
This serial port connector is the 9-pin D-SUB connector toward the left
side.
2.10.4 Share IRQ
The IRQ and the address range for COM1, 2, 3, 4 default are fixed. How-
ever, if you wish to disable the port or change these parameters later, you
can do this in the system BIOS setup. The table below shows the settings
for the PCM-9340's serial ports.
Table 2.8: Serial port default settings
Port
COM1
COM2
COM3
COM4
COM1-4 can share one IRQ that can be selected in BIOS setup under
Windows 98 and Windows NT. Choices are: IRQ3, IRQ4, IRQ5 or
IRQ10.
2.11 PC/104 connectors (CN5)
The PCM-9340 is equipped with a 16-bit ISA signal PC/104 connector
for future expansion. See Appendix B for details.
2.12 Ethernet Connections (CN6, LED1, LED2)
The PCM-9340 is equipped with a high performance 32-bit PCI Ethernet
interface which is fully compliant with IEEE 802.3u 10/100 Mbps
CSMA/CD standards. It is supported by all major network operating sys-
tems.
The Ethernet medium can be configured via the RSET8139.EXE program
included on the utility disk. (See Chapter 5 for detailed information.)
PCM-9340 User's Manual
Address range
3F8 ~ 3FF
2F8~2FF
3E8~3EF
2E8~2EF
Interrupt
IRQ4
IRQ3
IRQ10
IRQ5
16
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