Thanks! I figured it out and have both the 6800 and compupro working. Bill Vorländer wrote: >Bill Beech (NJ7P) wrote: > > >>I am trying to upgrade a swtp 6800 emulator I wrote in 2005. It appears >>there is another library required to be included to get the timer >>stuff. Which windows library is it? >> >> > >WinMM.lib > >HTH, > Martin > >