STM8 is a fairly new design although with some similarities to the 6502 and 6800. It does have multiply and divide instructions. It also has a plethora of addre

STM8 is a fairly new design although with some similarities to the 6502 and 6800. It does have multiply and divide instructions. It also has a plethora of addressing modes: ld a, #42 ; immediate. C constants ld a, var ; direct. C globals and statics ld a, (sp, 4) ; sp relative. C locals and arguments ld a, (x) ; indirect. C *ptr (ptr in register) ld a, (x, 42) ; indexed indirect. C ptr->foo (ptr in register) ld a, [ptr] ; memory indirect. C *ptr (ptr in memory) ld a, ([ptr],x) ; indexed memory indirect. C ptr->foo (ptr in memory) There are more, but mainly variations in width and PC relative jumps.