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From my experimenting so far, I do not think a pda strictly based

>From my experimenting so far, I do not think a pda strictly based 
on gate arrays would work  well. When I was experimenting with the openrisc, 
I never was able to synthesize beyond 25Mhz.

To me a better solution would be to use a dedicated cpu and 
put the FPGA on the bus and be accessible by DMA. 
Basically allow the dedicated cpu to do what it does best 
and use the FPGA to do what it does best. 

At 06:10 PM 12/10/2003 +0100, you wrote:
>I think the same thing.
>
>If you look at all the PDAs on th market, they are value-less without 
>third party support.
>
>It would seem silly to base the PDA around some fixed processor 
>architect that will always run into some limitation with some specific 
>application.
>
>What about a PDA based around a low cost high density CPLD.
>
>I already have a basic hardware design finished---was curious though to 
>see the interest since cutting a board would be expensive for what 
>might be an experiment. Most sizeable CPLD/FPGAs only come in BGA 
>footprints, which means board development might be around a 
>thousand. However I for that money I could get a handful of boards built.
>
>If theres willingness to share the cost I'd be interested in pursuing this 
>further.
>
>The idea would be to come up with the VHDL code of a processor core 
>with an LCD controller (routed out of the CPLD to an actual LCD), a 
>touchscreen and button interface, and some extras like speakers/jack, a 
>mic, and maybe a IRDA pair.
>
>What do you think?
>
>Ed 
>
>
>----- Original Message ----- 
>From: Ingo Maindorfer <ingo@l... > 
>To: openrisc@o...  
>Date: Thu, 9 Jan 2003 13:47:55 +0100 
>Subject: [openrisc] Open PDA 
>
>> 
>> 
>> Hello, 
>> 
>> I'm working with a Compaq IPAQ 3850 to develop complimentary a 
>> application for 
>> a german emergency medical services in Linux. But the IPAQ isn't 
>> robust 
>> enough for the daily work in that ambiance. The market does'nt 
>> provide that 
>> thing I seek with is washable and bigger and better display. 
>> I looked by Intel and AMD for some nice SoC's but they are close 
>> hardware.... 
>> 
>> What do you think about a Open PDA? 
>> 
>> Best regards, 
>> 
>> Ingo 
>> 
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