Hi Frank,

  The idea for "microstepping" is to interpolate the current between two
phases.  If you put only current for one phase in each state you do a
"big step".  By giving, for instance a current i/3 for one coil and 2i/3
for the other you multiply by 3 the number of steps.  

  Remember you must have a motor suitable for microstepping and use
current-controlled drivers for doing this (not on-off switches). Its
linearity is essential.  I hope this short comment could help you. 
Sorry for my bad english.

best regards,

Rildo Pragana (rpragana@truenet.com.br)
>from Recife, Brasil

On Thu, 17 Jul 1997, Frank Vinnerlid wrote:

> I am rather new to PIC«s but is trying to learn the 16c84. What I need
> is some
> code in order to microstep a stepper motor . Does anyone know of this??