Assembly Enigma

An Enigma Machine written in 6502 assembly

Read the blog post about this project here

Examples

Running

Step 1: Install xa

Install for Mac here https://formulae.brew.sh/formula/xa

More info here https://www.floodgap.com/retrotech/xa/

Step 2: Clone x6502 (6502 emulator)

git clone https://github.com/haldean/x6502

Step 3: Compile x6502

cd x6502
gcc -o x6502.bin -O3 -lpthread -Wall -lncurses -Werror -Wimplicit-function-declaration *.c

⚠️ You might get an error like debug.c:2:10: fatal error: 'debug-names.h' file not found. I solved it by commenting out the dump_cpu function in x6502/debug.c and line 2 with #include "debug-names.h". You don't need this stuff to run the program (who needs debug functionality?)

Step 4: Compile and run program

While being in ./x6502 run:

xa -w -Istdlib/ ../src/main.asm  && ./x6502 a.o65

Tip: ^C to exit program

Bonus program (Caesar Cihper)

If you want to look at a more easily comprehensible program, there is a file called caesar-cipher.asm in this repository.

xa -w -Istdlib/ ../caesar-cipher.asm  && ./x6502 a.o65

Tip: Type e (as the first thing) to choose encryption or d to choose decryption

License

This project is licensed under the MIT License - see the LICENSE file for details.