My non-expert googling suggests that there is indeed no multiply instruction for the 6502. https://www.masswerk.at/6502/6502_instruction_set.html https://www.m

My non-expert googling suggests that there is indeed no multiply instruction for the 6502. https://www.masswerk.at/6502/6502_instruction_set.html https://www.masswerk.at/6502/6502_instruction_set.html