Thanks for the suggestion.

I've looked at the 'C' source, but ... (1) it's not really suited for use as a line-by-line assembler as one might want in a debug monitor, and (2) it's part of a 'C' program, meaning its resources are scattered throughout the program and that makes its use objectionalbly cumbersome for the very limited capability that's needed.

There's no need for a symbol table, nor is there any need for an extensive parser, since symbols are not variable. The only symbols it needs to use are the instruction names and the few symbols used to designate the addressing modes.

Those functions are pretty simple by comparison with what's supported in the file-system supported assembler written in 'C'.

Dick