CompuServe Messages

Thanks Gregg, you're right that the smallest TIMER interval is 1 msec but repetitive calls to TIMER have variable intervals. I need to run a sequence of timed com port handshaking, ie turn on RTS for a msec, turn it off for a msec, turn it on again, etc. The device on the other end of my serial comm port is weird. It doesn't use pins 2,3 for Rx/Tx instead it recognizes precise on/off sequences of RTS and DSR in a binary-like fashion. I guess it's coming down to building some dedicated hardware interface that would convert *normal* RS232 signals into the device dependent RTS/DSR sequences AND have the hardware interface do the precise timing loops for sending these sequences to my device. It just seems like if I can do it in Quickbasic without ANY problems then there should be a way of doing it in a Windows App. I'm still not sure if the problem rests with VB or if its some intrinsic problem Windows.