
System Board 4-13
Parallel Port Addresses
Starting I/O Address
Port
378
LPT1
278
LPT2
228
LPT3
378
LPT1
278
LPT2
228
LPT3
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 one 16C550 UART compatible serial port (COM1) integrated
on the I/O controller. The serial port supports the standard RS-232C interface.
The buffered high-speed serial port supports transfer rates up to 115.2 KB. The
port allows the installation of high-speed serial devices for faster data transfer
rates.
The I/O addresses for the channel 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 I/O Addresses
Starting I/O Address
Port
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.
Содержание POWERMATE 2000
Страница 14: ...1 System Overview Configuration Features Components ...
Страница 100: ...4 System Board Connectors Jumpers Sockets Components ...
Страница 114: ...5 Illustrated Parts Breakdown Ordering Parts Field Replaceable Unit List Illustrated Parts Breakdown ...
Страница 118: ...6 Preventive Maintenance System Cleaning Keyboard Cleaning Mouse Cleaning ...
Страница 121: ...7 Troubleshooting Checklist Diagnostics ...
Страница 131: ...8 NECC Information Services Service Telephone Numbers Technical Support Product Information ...
Страница 147: ...A Release Notes Applications System Configuration Display Capabilities Fix OS Restore Option ...
Страница 183: ...NEC Computers Inc 15 Business Park Way Sacramento CA 95828 www nec computers com 456 00130 000SRV 03 2000 ...