NEC PowerMate CT manual Serial Interface, Parallel Port Addresses, Starting I/O Address Port

Parallel Port Addresses

Starting I/O Address	Port
378	LPT1
278	LPT1
3BC	LPT1
378	LPT2
278	LPT2
3BC	LPT2

Parallel interface signals are output through the system board’s 25-pin, D-subconnector. The connector is located at the back of the system unit.

Serial Interface

The system has two 16C550 UART compatible serial ports (COM1 and COM2) integrated on the I/O controller. The serial ports support the standard RS-232C interface. The buffered high- speed serial ports support transfer rates up to 115.2 KB. The ports allow the installation of high- speed serial devices for faster data transfer rates.

Sets of I/O addresses for the channels are given in the following table (see Section 2, “System Configuration,” for interrupt levels). Soft-selectable base addresses are 3F8h, 2F8h, 3E8h, and 2E8h.

Serial Port 1 and Serial Port 2 I/O Addresses

Starting I/O Address	Port
3F8	COM1
2F8	COM2
3E8	COM3
2E8	COM4
3F8	COM1
2F8	COM2
3E8	COM3
2E8	COM4

See Section 2, “System Configuration,” for information on resetting the port through the BIOS Setup Utility. See Section 9, “Specifications,” for the serial interface specifications.

Serial interface signals are output through the system board’s 9-pin, D-subconnector. The connector is located at the back of the system unit.

System Board 4-11