Perle Systems Adaptors - Manual (Page 45)

FAST Serial Adaptors User Guide
Installing under SCO OpenServer 5
Page 45
Chapter 2 Installing drivers and host cards
Note
A mouse or similar device (a few scanners and non-intelligent FAX modems) can be
confused by the extra buffering that the card provides. This buffering can be disabled on a
port by port basis using the mkdev comf command. The unbuffered ports use similar
names to those above with comf changed to com. e.g. com1a.
mkdev comf
The unbuffered ports will now work with a mouse or similar device but they are not
recommended for general use as they will present a higher load on the system and their
performance will be limited.