26 bit A68 compiler

ALGOL-68 subset!

A68S

This almost works on my Pi2, fails in the assembler. :-(

No source included. :-(

No source included. :-(

Possibilities for investigation of the extent of work required:
https://armclub.org.uk/free/ – specifically Armalyser which will pop out an analysis with the number of offending non-32bit elements and a disassembly ready for recompile after editing.

OK, any helpful labels and comments don’t exist, but it’s a start.

If you have the DDE then the included utility !SID will do a disassembly with certain bits replaced by Macros. Which can be even more helpful.

Armalyser shows 1 or 2 non-32bit opcodes per binary, but fixing those would only get the compiler working, not generating 32bit code itself.

That said, the guy (a retired professor) says on his website that he’d be interested in ports to newer hardware. If asked nicely he might cough up sources.

Unfortunately I don’t know ARM assembly yet, esp not well enough to deal with a compiler’s code generator. If A68 has to wait on me I’m afraid it will have a long wait. :-(