Engineer’s Log, Labdate 0720.23. The Klingons wonder how we manage to stay combat-ready even if they prevent us from getting any sleep. I instructed McCoy to brew up some more of our secret weapon and to hand thermos out to the entire crew.
Yeah! After a slight hardware modification the HRE firmware can now display vertical lines that are aligned 
with CBM characters. Nothing to write home about but every little counts.
Vertical synchronisation will be next. Unfortunately I forgot to arrange for VSYNC detection. Oops! There is no pin with interrupt support left. Swapping PE0 / PD0 might help but that’s a task for tomorrow.
And I’ll hunt the jitter down … tomorrow.
Need some sleep badly…