This was my first try, code that does nothing:

Then I compiled it to see in what size it comes out:

What? That’s hughmungus! That can’t be it.

The basic disassembly told me nothing what caused that giantic blob.

Adding the size optimization flag didn’t do much. 31 bytes saved. If I would add a little functionality that would kill the 1024 bytes.

ObjCopy it into Intel Hex will result in a minimalistic 30 bytes, that’s impressive for hex in text.

But extracting it into binary is even better!

2 bytes is more my league!

Taking a look at the hex output:

On which 08 95 is the return oft he main function. So I guess it works.

The next steps were a little bit more complicated, as I wanted Serial Communication for my Brainfck Interpreter. So I copied all relevant code and munched it together, resulting in a really small bunch of code.

(It works :)

After the Serial Communication was working, I went on to build the Brainfck Interpreter. But at first I wrote it for the x86 Architecture to have faster builds to test. I took a look at Wikipedia on how these ‚Opcodes‘ work. After a few minutes I came to the famous ‚while‘ opcode, which is a little more complicated. I used a stack for the while-calles, as I like the CPU-way of doing stuff (me, as a mostly low-level developer).

(Basic Example Debug Output for Testing)

After flashing my final results, I wanted to cry:

But after I remembered that there were a whole bunch of non-PROGMEM Debug String, I took them out and flashed it..

Yay, success! Done! :)