Extra Instructions Of The 65XX Series CPU (1996)
by embedding-shape on 12/6/2025, 12:38:50 AM
http://www.ffd2.com/fridge/docs/6502-NMOS.extra.opcodes
Comments
by: rossjudson
Some of those crazy instructions were used for copy protection, back in the day. Those mystery page boundary overflows were entertaining.
12/6/2025, 1:46:36 AM