If you want try use this NES emulator, clone this repository, please.
cargo run gdebug # display debugging information in GUI, abbreviation: gdb, g
cargo run cdebug # display debugging information in CUI, abbreviation: cdb, c
cargo run gdb cdb # You can use both at the same time
By default, a cassette named sample1.nes
directly under /roms
is read in. It should be printed as "Hello World" on the screen, but it's in the middle of production now, so it doesn't show anything.