> OF_call_method takes an ihandle but I want to call a global word (not
> associated with any device).  I used 0 but that might not work.
> 
> My FIND functions don't work either but I wanted to get DEPTH and DROP
> working first.
> 
> And the local university library has short hours (it's between quarters)
> so I can't go look at the standard until Monday.  Grr.  Maybe the public
> library has it, though.


You want 6.3.2.6 User Interface; ``inerpret''.

The interpret call takes:

	IN: [string] cmd, stack-arg1, ..., stack-argP
	OUT: catch-result, stack-result1, ..., stack-resultQ

P == NARGS - 1
Q == NRETURNS - 1

It pushes those arguments onto the stack and then interprets CMD from 
within a ``catch''.  At the end, it pops the stack items returning them 
as results.

Looking in openfirm.c, something like:

        static struct {
                char *name;
                int nargs;
                int nreturns;
                char *expr;
                int ans;
        } args = {
                "interpret",
                1,
                1,
        };


	args.expr = "1 2 +"; // but in firmware space - careful
	// see bug I've submitted about NBSD using space outside
	// of OpenFirmware address space.

	openfirmware(&args);

	....

or wait until Monday.

enjoy,
Andrew