PCI LPT & RS232
Software Guide
Chapter 3 Page 20
6. Advanced - clicking on this will display the following
window:
Settings available in this window are:
•
Use FIFO Buffers - turns the selected ports FIFO buffer
on or off. It is strongly recommended that the FIFO for
both ports is left enabled.
•
Receive Buffer - These settings allow the selection of a
receiver FIFO trigger setting. Selecting a low value will
allow the interrupt to be serviced quicker, which is good
for slow machines. If you have a fast machine, setting a
high value will give you more time for multi-tasking
operations.
•
Transmit Buffer - These settings allow the selection of
a transmitter FIFO trigger setting. Selecting a low value
will send fewer data-bytes per interrupt, and this is
recommended if you are communicating to a slower
machine. Selecting a high value will send more data-
bytes per interrupt, and will give more time for multi-
tasking operations.
