650X

The word you are looking for is SemiEpic

Microprocessor used by Atari, NES, Commodore 64.

Reference:

• 6502.org

• Wikibooks 6502 Assembly

• EMU-Docs CPU 65xx

• Super Nintendo Development Wiki

  • WLA DX assembler -

• Easy 6502

• visual6502

• The MOnSter 6502

• 8bitworkshop