== Chip Variants ==
The [[GBZ80]] (Sharp SM83) that powers the original [[Nintendo GameBoy]] is an in-between the [[Intel 8080]] and Z80. [https://gbdev.io/pandocs/CPU_Comparison_with_Z80.html Source] [[Media:GBCPUman.pdf|Game Boy CPU Manual]] [https://gekkio.fi/files/gb-docs/gbctr.pdf Game Boy complete technical reference] [https://youtu.be/GBYwjch6oEE Reverse engineering the Game Boy hardware] [https://youtu.be/HyzD8pNlpwI The Ultimate Game Boy Talk] [https://github.com/c-sp/game-boy-test-roms Game Boy test roms]
However, the Sega Master System and Game Gear use a standard Z80 CPU. [https://segaretro.org/images/d/d6/SoftwareReferenceManualForSegaMarkIIIEU.pdf Reference manual for Sega MarkIII] [https://segaretro.org/images/1/16/Sega_Game_Gear_Hardware_Reference_Manual.pdf Reference manual for Game Gear]