Command Line Options; Configuring With "System Assigned" Resources - Quatech QSP-200/300 User Manual

5.1 Command Line Options

The QSP-200/300 Client Driver for OS/2 supports two methods of configuration: using "system
assigned" resources and using "user assigned" resources. Both options provide full PCMCIA
compliance and functionality (including "Hot-swapping") but each has some advantages and
disadvantages as discussed in the following sections.

5.1.1 Configuring With "System Assigned" Resources

Allowing the OS/2 Plug-and-Play system to assign the hardware resources to the QSP-200/300 is
the ideal choice when only OS/2 programs will access the serial ports. When configuring the
hardware, the user simply specifies a list of COM port numbers. When a QSP-200/300 is
inserted into a PCMCIA socket, the client driver will configure the card as a series of COM
ports, starting with the lowest available port number in the list.
Configuring a QSP-200/300 with system assigned resources can be a problem, however, if DOS
and/or Windows applications will be accessing the serial ports. This is because most DOS
applications write directly to the communications hardware and the Windows' Control Panel also
wants to know the hardware configuration of the serial ports. In these cases, the user may want
to configure the QSP-200/300 with "user assigned" resources.
Example 1
DEVICE=C:\QSP-200\QSP200.SYS COM3
In example 1, the Client Driver will attempt to configure the QSP-200/300 as COM3 through
COM6. If COM3, 4, 5, or 6 already exists in the system, the QSP-200/300 will not be
configured. Furthermore, only one QSP-200/300 can be installed in this system.
Example 2
DEVICE=C:\QSP-200\QSP200.SYS COM7 COM3
In example 2, the Client Driver will attempt to configure the QSP-200/300 as COM3 through
COM6. If COM3, 4, 5, or 6 already exists in the system, the Client Driver will attempt to
configure the QSP-200/300 as COM7 through COM10. If COM7, 8, 9, or 10 already exist in the
system, the QSP-200/300 will not be configured. Up to two QSP-200/300s can be installed in
this system.
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