cctalk Digest, Vol 3, Issue 28

From: stevew <stevew_at_ka6s.com>
Date: Fri Nov 14 09:57:51 2003

> On a more serious note, many state-of-the-art processors do sort of
> implement "branch both ways" in the sense that they do speculative
> execution of both paths then discard the results on one path once the
> condition is resolved. A limited form of speculative execution was
> used by the IBM 7030 Data Processing System (AKA "Stretch"), introduced
> in 1961. I'm not aware of any other production systems with speculative
> execution that are on-charter for this list (e.g., introduced before
> 12-nov-1993).
>
> Eric

Eric,

If I'm not mistaken - this approach was used in later Burroughs hardware, like
the B6800, B6900, B4900 series machines (late 70's early 80's.) I would
imagine the IBM 360/91 also did this.

Steve Wilson
(Burroughs Alum)
Received on Fri Nov 14 2003 - 09:57:51 GMT

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