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System Board 4-11
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.
Summary of Contents for PowerMate CT
Page 13: ...1 System Overview Configurations Features Components...
Page 118: ...6 Preventive Maintenance System Cleaning Keyboard Cleaning Mouse Cleaning...
Page 121: ...7 Troubleshooting Checklist Diagnostics...
Page 130: ...8 NECC Information Services Service Telephone Numbers Technical Support...