Peter:

In a stepper motor system the step pulses control BOTH the distance AND the speed. The number of pulses per second determines the speed and the total number of pulses emitted determines the distance. A separate signal is sent for direction.

In the case I am working on, it is required that I be able to send out variable voltages based on these step and direction signals as I am interfacing with existing hardware that requires this +/- 10 volt signal to control the speed of the motor. I will also need to read a quadrature incremental encoder as well to keep track of the position.

It would seem my best bet is to use the J.R. Kerr PIC based devices already designed for this particular application. I was just hoping to be able to use the 8052 since I am already familiar with it.

Thanks,
Randy