*[https://codebase64.org/doku.php?id=base:6510_instruction_timing 6510 Instruction Timing]
*[[Media:NoMoreSecrets-NMOS6510UnintendedOpcodes-20212412.pdf|No more secrets - NMOS 6510 Unintended Opcodes]]
*[https://www.masswerk.at/nowgobang/2021/6502-illegal-opcodes 6502 illegal opcodes demystified]
*[https://youtu.be/fWqBmmPQP40 Conference - Reverse Engineering the MOS 6502 CPU]
*[https://floooh.github.io/visual6502remix/ Visual6502remix] [https://www.nesdev.org/wiki/Visual6502wiki Visual6502wiki]