Brainboxes CC-662 Hardware Manual page 31

PCI Photon 8 Port RS232
Networking the selected baud rate is doubled, i.e. selecting
115,200 gives a real baud rate of 230,400.
Selecting the Serial Solutions tab of the selected port properties
Window will display:
Settings available in this window are:
1. FIFO settings.
Enable FIFO - turns the selected ports FIFO buffer on or
off. It is strongly recommended that the FIFO for all ports
is left enabled.
Extend FIFO – When the FIFO is enabled the default
FIFO size is 16 Bytes. The extended FIFO size is 128
Bytes.
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. The trigger options in the case of the Photon
Software Installation
Chapter 3 Page 31