curse the 6800 the 6802,6803 were much easier to play with. Onboard clock generators for phase1 and phase2, I simply had to provide a ttl compatible signal as clock input or rig up a crystal
does anyone have a clean/simple clock generator logic for the 6800 thats meets its requirements (non overlapping edges etc).
Just curious thats all
Geez, I did that 30+ years ago.
I recall using a couple of 74S gates and some RCs to produce the basic non-overlap timing, and a couple of PNP transistors to boost things in the pullup direction.
Nowadays a simple HC or maybe AC logic circuit should do it, good hard pullup and pulldown drives. A couple of RC delays can do the anti-overlap.
The 6800 was a mild nuisance to program. You couldn't push the index, or something like that, and that was annoying. I actually wrote an RTOS for it, with a reentrant floating-point package, but it was tedious.
John
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