Xpantastic!

I wasn't very clear about my decompiler and what it does, etc, so I'll 
explain.

Example here:

    http://www.decompiler.org/zol.usub_4BE6.txt [original 6502 code]
    http://www.decompiler.org/zol.usub_4be6.code.txt [decompiled code]

The whole idea is to get rid of all register assignments, and also 
eliminate the use of the stack. Also, it deals with CPU flags.

It does this by having 3 kinds of variable:

    *LLocal (a register used as a loop counter)
    *BLocal (branch local; a register or stack is assigned in an If or 
If/Else block)
    *FLocal (a register or stack is the return value from a function)

Any Global variable, which in most CPUs is just RAM, is not filtered out.

Loops are found, as are any amount of nested If/Else's, and Goto's are 
eliminated. (except for jumps from inside a loop).

The point of my decompiler, then, is not to output code that would 
compile in a C compiler, but to make assembly code much easier to read - 
and much faster to understand. Then you modify the assembly code to do 
what you want.

As an example, I've decompiled a game and I could see what the function 
(which draws the game screen) did, and how it worked, very quickly.

Also, it can output annotated assembly language, and it can output 
addresses before each line of code, so you can load the decompiled code 
into a disassembler, and it shows you the code alongside the code in memory.

As for the 6809, I'll look into getting a disassembler for it and get to 
writing a module.

Cheers,

Jeremy.