As for the Sharc DSP parts, they appear to be misidentified on the
schematic. I believe they are AD21065L, really, right? I've never heard of
an AD21D56L.
If so, the 21065 ran at a maximum of 66 MHz, while the next generation 21161
(for instance, just one member of the 2116x family) runs at a maximum speed
of 100 MHz. However, the 21161 has 2 floating point units, whereas the 21065
has only one... so in theory a 3x performance boost can be realized with the
newer part.
Here we've used the 21161 in recent products, but it's quite impractical to
touch the existing 21065 designs; there is nothing remotely close to a
drop-in upgrade possible because of the huge differences between Sharc
generations.
RC
-----Original Message-----
From: tentec-bounces@contesting.com
[mailto:tentec-bounces@contesting.com]On Behalf Of Bernard(wtrone)
Sent: Wednesday, March 16, 2005 9:27 PM
To: tentec@contesting.com
Subject: [TenTec] Orion Processing
I don't know if I have seen the numbers (operating speed, etc.) for the
Orion's processor and DSP chips/ units. Does anyone have them? Since this
design is probably going on 3 years old, what capabilities do the newer
processors and DSPs have? If you believe in Moore's law, then the speed
should be 2-4 times faster. I'm also wondering if the newer processors and
DSPs are pin for pin compatible with the current ones.
Why am I curious?
Well, there has been some discussion on this board about a complete
rewrite of the code, version 2.XXXXX. It could be that the new code will
run "better" with faster processors, or, maybe, need better processors.
And, a faster set of processors just may "solve" some of the problems with
the sweep, and add a little more capability elsewhere.
Just sort of thinking out loud.
73,
Bernard, WA4OEJ
_______________________________________________
TenTec mailing list
TenTec@contesting.com
http://lists.contesting.com/mailman/listinfo/tentec
_______________________________________________
TenTec mailing list
TenTec@contesting.com
http://lists.contesting.com/mailman/listinfo/tentec
|