CompuServe Messages

As Mike mentioned, you may be thinking of the 6800 as being more related to the 68000, altho the 6502 is also related because of HUMAN parentage… The Motorola 6800 came out in 1974. Part of the 6800 design team left to join MOS Technology, which then brought out the 6501/2 in 1975. Because of this human factor, the 6502 bore more than a passing resemblance to the 6800. In any case, the 68000 design team wasn't out to make a better 6800 (The 6809 design team, working independently, was. If the 68000 hadn't panned out, the original intention was to eventually extend the 6809 into a 32-bit cpu by stages)… the 68000 guys were to start from scratch. To quote Motorola, "earlier designs were to be used as examples, not models". Even so, the basic command set ended up looking similar to the 6800's (and by the above-explained parentage, the 6502). But the addressing mode philosophy (PIC/reentrant/orthagonal) paralleled the 6809 in many ways because of common basic Motorola research in that area. So I'd say the 6502 was a bastard cousin to the 68000, at most ;-).