The KimKlone impresses me quite a bit; was it just a case of a thought like: "oh, if I did this and this, I could extend the address space..." and then a burning desire to see it work, or did something else motivate this?
Also I'm a Forth fan, and when when I realized the counter/timer of a 6522 could be tricked into serving as IP for a 9-cycle machine-code NEXT instruction, the idea amused me immoderately (LMFAO) and I had to build the darn thing! :oD Previous HN thread here: https://news.ycombinator.com/item?id=3070169
It's very clever. Thank you.
Do you ever visit the forum at 6502.org? There's a smallish discussion about KK there... http://forum.6502.org/viewtopic.php?f=9&t=1487