[mark-r]

+1 for the 6809. I've worked with both the Z80 and 6809, and while both were long enough ago that I don't remember the details the 6809 really impressed me. I wonder if there's ever been another 8-bit processor that surpassed it.

[Gibbon1]

I remember the 6809 it was really clean and capable and I think supported relocatable code. Very much unlike the funky instruction sets of any of the other 8 bit machines and not the horror show that was x86.

[mark-r]

I much preferred the 68000 to the 8086. The regularity of the instruction set made writing a disassembler trivial. Coupled with the single-step bit you could write a very capable monitor, which I did.

[jonsen]

Yes, the 6809 could jump and branch relative to the current location, program counter + offset. If all jumps where of that kind a program could be located anywhere in memory.