MPC850 Development Board - with SDRAM
Dan Dickey
ddickey at charter.net
Mon Jan 10 13:14:40 EST 2000
Dan Malek wrote:
>
> Dan Dickey wrote:
>
> > 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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