4 ms·
"The biggest problem is that multibyte arithmetic has to be processed in LSB to MSB order, with the carry propagating from one byte to the next; but on the 6502
by colomon 8y ago
"The biggest problem is that multibyte arithmetic has to be processed in LSB to MSB order, with the carry propagating from one byte to the next; but on the 6502 it's so much easier to count down than it is to count up..."
Not that I've tried this (haven't programmed in 6502 assembly in 30+ years now) but doesn't that suggest he should order the bytes in the opposite direction? (ie, if I'm understanding correctly, he's using little-endian now but his comments make me wonder if big-endian might be more efficient on 6502.)