Re: MPC850 Development Board - with SDRAM

Dan Malek wrote:

Dan Dickey wrote:

quoted

yes - I have an RPX Lite sitting right next to me.
But, apparently Embedded Planet doesn't have any
development boards with SDRAM on them.

Embedded Planet does not build development boards, they
build production boards for OEMs to integrate into products
to reduce development cost and risk.

Sorry - didn't mean to imply that.  I'm aware of what they
advertise on their web page (http://www.embeddedplanet.com/)
and how some of it is used.  I'm not sure that any "smaller"
companies actually make powerpc development systems - instead,
I can only find them at Motorola and IBM, and ???.

  There is always
a debate about EDO versus SDRAM.  Their design started wtih
EDO, and since it continues to be available with both
competitive cost and performance there isn't a reason to
change the design.

Products that wish to use SDRAM do so by placing it on their
boards that connect to the Embedded Planet board.  This allows
the flexibility to add the necessary amount of memory for
the product requirements.  You can use the UPMB signals from
the RPX-Lite processor bus connector in your design if you
require SDRAM.

        -- Dan

Yes, I've become a little more aware of this situation since
claiming the above.  Here's a message I received from
Robert Applebaum (who works for Embedded Planet I believe).
He gave permission to repost this to the list.

Robert Applebaum wrote:

Dan, we use EDO on CPU boards, but have PC100 SDRAM on new IO cards such as
the VEXC which use the UPM B (the EDO on UPM A are used as a single Heap)

all our new products have SDRAM

I haven't responded back to Robert yet; but I'm intrigued by the
last line - is there a system in the works that has SDRAM on it?
(And no EDO).  Time will tell.

And yes - I'm aware that Embedded Planet isn't in the
development system market - but you do have to admit, their
boards also fulfill that requirement pretty well.  :)
	-Dan

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