Re: Concertlina II: Full Circle

John Savard wrote:

On Tue, 18 Jun 2024 10:01:20 -0600, John Savard
<quadibloc@servername.invalid> wrote:

On Mon, 17 Jun 2024 23:17:27 +0000, mitchalsup@aol.com (MitchAlsup1)
wrote:
>

No, it is not a memref--it is a return ! using the register from the VEC  instruction.

>
As should not surprise you, I was referring to the end-of-loop
instruction in my current Concertina II, not the one in your MY 66000.
>
I try to avoid stacks, and reserving extra registers, as much as I
can.

Also, this looping instruction is strictly a way to directly encode
the FORTRAN DO loop. It does not attempt any vectorization.

The semantics of instructions in a loop are subtly altered such
that they can be vectorized and to execute multi-lane style.

At one point, in the original Concertina, I did have a sort of
loop/vectorize instruction with a functionality that may be somewhat
similar to your VVM. I am definitely going to look at adding that to
Concertina II, as this will perhaps clarify the discussion.

John Savard