In the effort to build an AC power inverter
I was passed the crazy suggestion to store 
sine wave pwm data directly into a ROM for
'playback' to the power circuit. This is my
implementation of it. There is an array of
counters, most of the bits are fed to the 
EEPROM, the remaining bits select which bit
of the ROM goes to the output. 
Its a basic test of the idea and it was successfull
Keep in mind that this is just half the wave, the
next MSB would select which side of the transformer
was driven, turning this rectified signal into a full 
wave.
Multiple channels could be stored on the ROM
, in particular, 0, 90, 120, and 240 degrees
out of phase.