Maybe for convenience when looping through the string in 6502 machine code, initialising some register to the length (maybe Y), using the appropriate addressing mode with that register (LDA (string), Y), decrementing the register, looping again if zero was not reached. The code is going to be shorter and thus faster using this approach, even if it imposes a representational legacy.
Statistics: Posted by paulb — Mon Jun 02, 2025 10:37 pm