Re: question about branching/returning

[Michael L Maraist]

The internal do-op-loop runs until it sees a return value of zero from any
op-codes.  The RETURN statement within basic_opcodes.ops is really a keyword
which gets parsed into an offset of the current PC counter based on the
internally calculated size of the instruction (known at Configure time from
opcode_table).  Of course, this is based off my reverse engineering of existing
code.  I'm sure any of this is subject to change.

As a note, another poster said that "end" is never executed which isn't currently
true.

-Michael

Dave Storrs wrote:

> Ok, that was pretty much what I thought.  But then what is the 'end'
> opcode for?  It does a 'RETURN 0', which would increment the PC by 0
> opcodes...which either counts as an infinite loop or a no-op, and we've
> already got a no-op op.
>