B&B Electronics ESCLP-100 - Manual - Manual (Page 19)

16550 UARTs or 921,600 bps for 16750 UARTs. Software may set these baud rates directly by
using the appropriate OS/2 function calls (IOCTl functions 0x43 and 0x63 for baud rates higher
than 57,600).
If a rate selector jumper is applied, the device driver will accept only baud rates up to
115,200 bps. The hardware will multiply the baud rate in accordance with the jumper setting
without the device driver's knowledge. For instance, if the "X2" jumper is applied and software
is set for 115,200 bps, the actual baud rate will be 230,400 bps.
Applying a rate select jumper to force higher baud rates can be useful if a particular
software program does not support the higher rates. Note that the jumper selection affects all
ports on the adapter.
3.6 PCMCIA "Hot-Swapping"
The QCOM.SYS driver is notified when a Quatech PCMCIA serial port card is inserted
or removed. OS/2 sessions will be updated with the new information immediately. DOS and
Windows sessions will not receive new PCMCIA port information (either insertions or
removals). DOS and Windows sessions started AFTER
the insertion or removal will have the new information.
Avoid removing PCMCIA cards while they are being accessed by a program! Doing so
can create undesirable results!
3.7 Hardware Manager
The device driver is fully compliant with the Resource Manager component in OS/2
Warp. All resources required by serial ports controlled by the driver are reported to the system.
The user can examine the resources used by installed serial ports by opening the Hardware
Manager object.
To open Hardware Manager, click the right mouse button on an open area of the desktop
and select System Setup. Alternatively, System Setup can be found in the OS/2 System folder.
Double-click on Hardware Manager.
Serial port icons in Hardware Manager have titles starting with "SERIAL". Quatech's
device driver enhances the display by adding the logical COM port name and an indication of
whether the port is contained on a Quatech PCI or ISA multiport adapter or is a standard legacy
port. The base address and IRQ values shown can be plugged into DOS and Windows software
to allow access to the serial ports from those programs.
PCMCIA serial ports do not benefit from the display enhancements. The reporting for
them is done by the PCMCIA subsystem of OS/2.
3.8 Quatech Micro Channel adapters
3.8.1 Block Addressing
In this mode, all serial ports on the adapter are addressed in a contiguous block in the I/O
space of the computer. For instance, a QS-1000 installed in block mode at address 300 hex
would have four ports addressed at 300 hex, 308 hex, 310 hex, and 318 hex.
Quatech Asynchronous Serial Device Driver for OS/2 16