4 ms·
Well I always wondered why 6502 had BCD. What was the point? I guess it was sorta fashionable back then.
by lstodd 3y ago
Well 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.