What it says .... it's complete and apparently working okay. Code size is 722 bytes. Currently the source compiles to 725 bytes + some extra code after $400 ; this code allows me to put code in the assembly which is loaded on new - it's quicker than typing it in manually.

The < 768 bytes would actually matter ; ROMs in these days were often 256 x 8 bytes, so it's the difference between 3 and 4 of them.