Specifications

CARROLL TOUCH Appendix D - CTKERN Function Reference
Touch System Programmer’s Guide D-27
Note
Multiple invalid parameter status codes may be returned
in the CX (Status) register. For example, if both the baud
rate and parity parameters were invalid, 18H would be
returned in register CX. This is equivalent to the “Invalid
Baud Rate” and “Invalid Parity” status codes or’ed
together. The application should interpret these codes on
a bitwise basis.
Notes
This function is very similar to GetCommunicationParameters (22),
except that register BL does not contain a value representing the
RS-232 communication port being used.
Sending this function causes CTKERN to modify the communication
parameters and then reset the touch system, just as if Reset (0) was
called. For any touch system other than an RS-232-based touch system
using autobaud/autoparity, the communication parameters of the touch
system must be changed to the new parameters before this function is
called. For RS-232-based touch systems that use autobaud/autoparity,
the touch system is simply reset using the new baud rate and parity.