Here I used the basic robotic code and added a little EEPROM table
driven driver for a stepper motor. The table is set up to do half steps. There
is no monitor for this program. The code is looking for some switch inputs
to step forward/backward, etc.

Main.asm   Main Loop and initialization
cpu.asm   CPU Hardware init code
Switch.asm   Input debounce and command logic
Step.asm   Step logic
s1200def.INC   My version of this ATMEL file