Just In case anyone is interested:
I've attached a tool chain that I used Claude to develop. (Just to see if it could do it)
It is for an editor, compiler, simulator, HEXgenerator, code formatter for the 8052 microprocessor.
The compiler was real hard work for Claude....it kept getting things wrong, produced crappy assembler output. It took about 6 weeks of continual corrections to get to the stage where the output is reasonably efficient. If you didn't know exactly what the output should be, before you start, then the project will be a failure.
The simulator was likewise difficult for it, and it took MANY iterations to get it working. Once again, you need to know EXACTLY what the workings of it should be. If you just trusted it, then you will have very buggy software. (I wouldn't recommend NASA use it)
The other utilities where a bit easier. Probably because optimizations where less important, and the programs are shorter, or well understood.
So instead of developing software yourself, your job becomes one of checking/testing what AI produces.
As others have probably discovered, you need to be very precise in spelling out what you want, as a more vague request will produce more side affects.
Is it a good tool ?
It took 2 months, to develop there utilities and the question is how long would it have taken without it. Probably far longer, but the code seemed to be band aids on top of band aids, so maintaining it could be challenging.
The fact that it could do it at all was impressive, but it may need a few more years before its trust worthy.
If anyone wants to use them, good luck, and I take no responsibility for any remaining bugs.