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12 CPC-2400 User's Manual
2.10 Serial ports (CN13: COM1/RS-232; CN14:
COM2/RS-232)
The CPC-2400 offers two serial ports: COM1 in RS-232 and COM2
(CN13: RS-232, CN14:RS-232). These ports let you connect to serial
devices (a mouse, printers, etc.) or a communication network.
You can select the address for each port (for example, 3F8H [COM1],
2F8H [COM2]) or disable each port..
The development board mounting bracket holds the serial port
connector for the one port. The DB-9 connector on the bottom of the
bracket is the first RS-232 port, COM1. The 10 -pin header is the
second serial port, COM2.
2.10.1 RS-232 connection (COM1-CN13)
Different devices implement the RS-232 standard in different ways. If
you are having problems with a serial device, be sure to check the pin
assignments for the connector.
2.10.2 RS-232 connection (COM2-CN14)
COM2 is an RS-232 serial port. The IRQ and address range for both
ports are fixed. However, 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 CPC-2400 board's ports:
Table 2-2: CPC-2400 serial port default settings
Port Address Interrupt Default
COM1 3F8, 3E8 IRQ4 3F8
COM2 2F8, 2E8 IRQ3 2F8
2.11 Power connector (CN18)
The CPC-2400's 4-pin power connector is fully compatible with PC's
AT power connector. User can easily purchase AT power supply from
the market.