AVR-Chat

John Samperi wrote:

>At 01:25 PM 11/01/2006, you wrote:
>  
>
>>  Quite simple:  I have potential applicaitonsd whre a 20 Mhz processor
>>simply isn't fast enough.
>>Is it a hardware or software limitation? Can you rewrite part
>>(or all??) of the application in assembler perhaps? I understand
>>the case of a PWM scenario where you could be limited by the
>>PWM frequency. In other words I would NOT consider over clocking
>>a processor in a production unit, but that's just me, I like
>>things to run WELL within their specs.
>>
>>    
>>
  In this case, it is a software issue.   Sinmply not enough time to 
execute all the necessarty instrucitonsd at a measly 20 Mhz.  (OK, I 
admit it, I've been spoit by 100 Mhz, 600 Mhz, 3.8 Ghz Intel Crapiums)  
But seriously, the primary project I have in mind would require at 
*LEAST* an 800 MIPs (hopefully that would mean an 800 Mhz) processor, 
which is **WAY** outside what we're ever going to see in an AVR.  An 
ARM9 ( or that new ARM processor, that will supposedly sclae to at least 
1 Ghz, and which, oddly enough, QualComm, of all companies, has 
licensed), or maybe from the new AVR32 line (to which I alluded in an 
eariler post), but not bloody likely in an 8 bit AVR, even though, aside 
from the speed issue, my app doesn't really need any more than an 8 bit 
processor. *sigh*  (a 32 bit 100 Mhz logic analyzer, in case you're 
wondering, with up to 16 Mbytes of logging capacity) [of course, doiing 
it with a 32 bit processor would considerably simnplify certain aspects 
of the design and software]

  Mostly, I was just not quite "idly" curious.


tom