Brought in the m-pulse.asm demo from the web site. updated it to use the
16bits.inc file rather than math.inc. Adds util.asm/util.inc (i know
lousy naming) which are utility routines mostly for the LAB-X3. The
m-pulse.asm file was derived from my experiments on LCD so its a bit
less polished than one would hope. Although at this point 10 years
later I'm not particularly motivated to clean it up :-)