>
>And you can reduce the number of your points to the half -- did you ever
>notice that the second half of your half sine wave is exactly the first half
>in reversed order? With half the points you go forth and back, then negative
>forth and back...
>
I tried that at first, but the PIC had to make too many decision that way
and I had trouble doing everything before the next update pulse.(50us)  And
I'm already running at 20 Mhz!

The main time-eater is the fact that I half to keep track of and load three
different DAC's for three different phases of the motor. (0, 120, 240)