[Coco] C and BASIC09

[Robert Gault]

Mannequin* wrote:
> I know everyone is in Chicago by now, but the few of you who are left
> can probably help me out here. :)
> 
> I know that there is a way to run C functions through a BASIC09 program,
> but I was wondering if there was a way to run BASIC09 procedures through
> a C program and receive an integer value back?
> 
> Thanks!
> -M.
> 

The only way you can do that is to use Basic09 to create an executable 
procedure with PACK. That will give you a new command in your command 
directory which runs under RunB.

Just as you must follow certain procedures when using C within a Basic09 
program, you must do similar when going the opposite way. Your Basic09 
procedure may need to accept parameters and output data in a form that 
the C program can accept. The simplest method would be to transfer data 
via the OS-9 path structure. Study the OS-9 Fork and Chain commands and 
how these are used within a C program.

If you want more details, please be very specific about what you want to 
do. You may find that invoking Basic09 is not the best choice.