Re: gEDA-user: uClinux

[Hal2000 <carzrgr8@xxxxxxxxxxxxx>]

Dave McGuire wrote:

>   Is it *faster*, or does it just have a higher clock frequency?  
> (sorry, pet peeve of mine...but it is a valid question)

Yeah, tough and most excellent question - my MIP is better than your MIP 
:-)  .  The ARM runs roughly 1 instruction per clock tick - so does the 
Blackfin.  But, they are different architectures - pipelines are 
different, and so on.  Tough answer without some hard specs from 
independent comparisons - which I don't have.  Some of the ops on 
Blackfin take more than 1 tick - not sure if the ARM has any multi cycle 
instructions.  The ARM has a floating point coprocessor while the 
Blackfin has built-in MAC for DSP stuff (not sure how that plays with 
linux OS).

I dunno - the ARM seems kind of cool. If it can't handle the DSP I need, 
my backup plan is to put it into an FPGA.  Oh yeah, there's an ARM ref 
board, but it costs $450 (although I can get a loaner for 30 days).  The 
Blackfin has an eval board for $150.  I'm def. a cheapskate, so I like 
the blackfin board - but I'm not letting that make my mind up.

gene