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The WDC 65C816, sometimes abbreviated as 65816, is the main CPU used for the SNES, as part of its S-CPU chip.

See: 65c816 guides


  • 65C816 Opcodes - 6502.org article, reference for 65C816 relative to 6502.
  • 65816 Reference - Superfamicom.org wiki article, general reference for 65816 and instruction set.
  • 6502 Guide - Archived Obelisk 6502 guide, good primer for the CPU family.
  • W65C816S.PDF - Official datasheet for WDC 65C816 CPU.