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1. General Information
The Quatech, Inc. QS-100D provides four RS-232 asynchronous serial
communication interfaces for IBM-compatible personal computer systems using
the 16-bit ISA (Industry Standard Architecture) expansion bus.
The QS-100D is highly flexible with respect to addressing and interrupt level use.
The serial ports are addressed in a contiguous block that can be placed anywhere
within the range of 0000 hex to FFFF hex, and available interrupt levels include
IRQ2 to IRQ7, IRQ10 to IRQ12, IRQ14, or IRQ15. (Early versions of the
QS-100D are limited to IRQ2-7.)
All four ports on the QS-100D can share one interrupt level. A special interrupt
status register is provided to allow controlling software to manage the shared
interrupt level. The shared interrupt feature minimizes the system resources
consumed by the adapter.
In order to support the use of the shared interrupt feature of the QS-100D,
Quatech has developed device drivers for several popular operating systems and
environments. The sales department can be contacted for details on current
offerings.
Note: References to the QS-100D throughout this manual apply to the following
products.
yesyesQS-100IND750
yesnoQS-100D750
noyesQS-100IND
nonoQS-100DS
UART UPGRADEIND PACKAGEPRODUCT
Figure 1 --- QS-100D Product Series Summary
1.1 Explanation of Packages
The base four port RS-232 asynchronous communications adapter is the
QS-100DS. This product inplements each of its four communication channels
with a 16550 UART. Signal Transmission and Reception is accomplished using
standard line driver and receiver components.
For improved performance and reliability, Quatech offers the following board
upgrades:
QS-100D User's Manual 1-1