- http://6502.org/
- https://www.masswerk.at/6502/6502_instruction_set.html#
- MCS6500 Microcomputer Family Programming Manual - 1976
- http://www.6502.org/tutorials/6502opcodes.html
- https://www.middle-engine.com/blog/posts/2020/06/23/programming-the-nes-the-6502-in-detail (Explicacion detallada)
- https://www.nesdev.org/wiki/CPU
- https://youtube.com/playlist?list=PLmTFn7gcxsfCz0Ze4zhm9jUi_-o6K-cdB (Videos de Ben Eater que explican la version moderna)
- https://www.youtube.com/playlist?list=PLLwK93hM93Z13TRzPx9JqTIn33feefl37 (Emulating 6502 CPP by Dave Poo)
- "Rockwell R650X and R651X Microprocessors (CPU)" (Datasheet)
- https://en.wikipedia.org/wiki/Interrupts_in_65xx_processors