gil wrote:
> How can a modular operating system be written so that a user can write and
> install system functions (from core, tertiary, whatever), in a manner that
> any software including the kernel may call it.

Dynamic linking. Basically, memory can be allocated for text/data where
module files are loaded from disk and then they export their symbol table.
Any modern Unix does this. Windows does this.

> Via this knowledge I wish to both take my knowledge up one step and maybe
> add this capability to ELKS. **The important info which I lack is how to
> build the calling routines to the installed (compiled) code**

It sounds like you want something beyond dynamic linking. Can you explain
further what it is you need?

> Thanks go out to dennis brown for his earlier response on general operating
> system resources... and to you for reading the message.
> Any help is appreciated.

Of course. =)

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