PCI 3 Port RS232
Software Configuration
Chapter 3 Page 23
Advanced Port Settings.
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When the Advanced button of Port Settings is selected the
following dialogue is displayed:
Settings available in this window are:
1. 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.
2. 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.
3. 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.
4. Defaults: when clicked this button restores the
advanced settings for the selected port to:
Use FIFO Buffers:
On (Checked)
Receive Buffer:
High (14)
Transmit Buffer:
High (14)
