Chip8
A CHIP-8 interpreter/emulator/decompiler written in Rust.
Chip8 has full implementation of the CHIP-8 spec opcodes with full test coverage (with TravisCI). It has an ncurses front-end to render the screen output and register values.
Chip8 also has a full decompiler to turn programs back into assembly:
$ cargo run -- decompile -i ZERO | head -n 20
0200: 60 0a MOV V0, #$A
0202: 65 05 MOV V5, #$5
0204: 66 0a MOV V6, #$A
0206: 67 0f MOV V7, #$F
0208: 68 14 MOV V8, #$14
020a: 61 01 MOV V1, #$1
020c: 62 01 MOV V2, #$1
020e: 63 01 MOV V3, #$1
0210: 64 01 MOV V4, #$1
0212: 60 0a MOV V0, #$A
0214: a2 78 SI $278
0216: d0 56 DRAW V0, V5, #$6
0218: 70 0a ADD V0, #$A
021a: a2 7e SI $27E
021c: d0 66 DRAW V0, V6, #$6
021e: 70 0a ADD V0, #$A
0220: a2 84 SI $284
0222: d0 76 DRAW V0, V7, #$6
0224: 70 0a ADD V0, #$A
0226: a2 8a SI $28A