Quatech DSP-100 User Manual download pdf (Page 50)

9. Unix Support

The DSP-100 and other Quatech asynchronous serial communications interface

products are supported in the UNIX operating system by Quatech’s UNIX Enhanced

Serial Device Driver. This driver is not included with the DSP-100, but may be

purchased separately.

9.1 UNIX Enhanced Serial Device Driver

The Enhanced Serial Device Driver provides a fully interrupt driven, buffered

input/output system for multiple RS-232 serial ports in an IBM or compatible

microcomputer using the SCO UNIX System V Operating System. The Enhanced

Serial Device Driver is a replacement for the serial driver that is provided with the SCO

UNIX operating system, and is one hundred percent SCO UNIX compatible. It

provides the same functions as the SCO UNIX (Release 3.2) serial device driver plus the

following features:

v Support for Quatech RS-232 Asynchronous Communication Adapters, as well as,

the system board serial port.

v A flexible configuration scheme which allows any I/O address or interrupt

request number that is supported by Quatech's Asynchronous Communication

Adapters.

v Support for the National Semiconductor NS16550A device, an enhanced version

of the industry standard NS16450 device. The NS16550A offers 16 character

transmit and receive buffers that greatly reduce interrupt overhead on the CPU.

v Support for up to 40 COM ports on multiple boards/IRQs.

v The Enhanced Serial Device Driver will support a total of 5 serial adapters.

v Written in C for maximum efficiency.

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Quatech DSP-100 User Manual Page 50