Quoting "Alan B. Pearce" : >> My other major concern is its ability to deliver stepper >> pulses at over 1MHz to each of a few steppers >> simultaneously at different speeds, > > Sheesh --- what sort of stepper motors are you using that can accept 1MHz > stepper pulses .... > That was a mistake, which I corrected in another email. Forgot to divide by 60, that was 1 million pulses per *minute*. :( Cheers, -Neil. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist