costamauricio/6502-emulator

6502 CPU Emulator in Golang

6502 Emulator

Simple emulator of 6502 cpu in Golang.

Contents

Packages:

• cpu6502 -> 6502 CPU emulator
• bus -> Simple BUS to attach to the emulator to provide RAM addresses
• debugger -> SDL2 implementation to visualize the current CPU status

Dependencies

• go-sdl2 to run the debbugger

Running the debbuger

$ go mod tidy
$ make run

References

Based on the oneloanecoder series of NES emulator https://www.youtube.com/watch?v=nViZg02IMQo&list=PLrOv9FMX8xJHqMvSGB_9G9nZZ_4IgteYf

• Datasheet -> http://archive.6502.org/datasheets/rockwell_r650x_r651x.pdf
• More detailed datasheet with instruction descriptions -> https://www.princeton.edu/~mae412/HANDOUTS/Datasheets/6502.pdf
• Instruction set and Address modes details explained -> https://www.masswerk.at/6502/6502_instruction_set.html
• Vflag (overflow) explanation article -> http://www.6502.org/tutorials/vflag.html