Serial Port Writing with CDD 3 DOS 
Author Message
 Serial Port Writing with CDD 3 DOS

I have a Clarion Database Developer for DOS 3 application that
calls a C function that sends a BELL character to an external
cash drawer to pop it open.  The client who was using this
point-of-sale program upgraded their computer from a 486 to
a Pentium and now the cash drawer does not open.

Could it be that the UART on the Pentium serial port is too
fast for the cash drawer?  Could there be a software reason
for the failure?



Sat, 19 Dec 1998 03:00:00 GMT  
 
 [ 1 post ] 

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