3 ms·
This makes me wonder if there's any record of why Motorola thought that feature was worth implementing in the first place.
by mst 3y ago
This makes me wonder if there's any record of why Motorola thought that feature was worth implementing in the first place.
- lstodd 3y agoWell I always wondered why 6502 had BCD. What was the point? I guess it was sorta fashionable back then.
- hulitu 3y agoMaybe to drive LED alphanumeric display segments.
- wiml 3y agoBCD modes only take a few gates to implement; their biggest cost is probably the instruction encoding space they occupy. On a chip as small as the 6502 it makes sense that some users would want to avoid the expensive decimal/binary conversions and do arithmetic in decimal.