On Sat, Jul 18, 2015 at 6:26 PM, S Klammer wrote: > What clock rate are you running the > 68HC11 at? > > It's still a slow-poke running at the same 0.89 MHz as the MC-10. It may be possible to give it a double-speed poke like the CoCo 3, but I'm not sure how that would affect the synchronized timing with the 6847 VDG. - Darren