*[https://c74project.com/ C74-6502] [https://monster6502.com/ MOnSter 6502] Dis-integrated implementations of the 6502 microprocessor
*[https://hackaday.io/project/21496/logs FPGA NES] [https://floooh.github.io/visual2a03remix/ Visual2A03remix] [https://github.com/emu-russia/breaks/tree/master/BreakingNESWiki_DeepL Breaking NES wiki]
*[https://www.maizure.org/projects/decoded-bisqwit-nes-emulator/ Decoded: The Bisqwit NES emulator] [https://bugzmanov.github.io/nes_ebook/ Writing NES emulator in Rust] [https://emudev.de/ Emudev (gb-nes-c64-snes)]
*[https://floooh.github.io/2019/12/13/cycle-stepped-6502.html Cycle-stepped 6502 emulation how-to]
*[https://github.com/SingleStepTests Tom Harte's SingleStepTests]