I remember being thrilled to bits that indexed addressing offered automatic increment/decrement, obviating the need to follow your load or store with an explici

I remember being thrilled to bits that indexed addressing offered automatic increment/decrement, obviating the need to follow your load or store with an explicit INC or DEC, saving a byte (or 2? Idk, 40y ago) of memory, which was a big deal in a tiny little 64K address space. Better still, saving a clock cycle - considering this sort of thing was often inside a loop, and with clock frequencies in the 1-2 MHz range, also a big deal.