cctalk Digest, Vol 18, Issue 1

From: CRC <technobug_at_comcast.net>
Date: Tue Feb 1 10:01:07 2005

In his missive dated Mon, 31 Jan 2005 15:25:54 -0800 (PST), "Eric
Smith" <eric_at_brouhaha.com> asked:
> Jim wrote:
>> Mentioning my old employer, Calera Recognition Systems, reminded me of
>> this ISA bus "hack."
>
> Very clever. Thanks for sharing the description; that's the kind of
> information that we'd probably never find anywhere else.
>
> The one-bit-at-a-time arbitration based on a node number or serial
> number has been used in many other arbitration protocols. I wonder
> where it was first invented.
>
> Eric

In the late 70's-early 80's I was working on a processor controller for
which we received three fairly fundamental patents, one of which
covered this technique (see US patent 4,660,141). Unfortunately, we
had to scrap most of what we came up with in order to get a product out
the door and pay the rent. All work was simulated on a VAX730...

        CRC
Received on Tue Feb 01 2005 - 10:01:07 GMT