[Coco] [Color Computer] Re: OS-9 as Replacement for DECB.

[jdaggett at gate.net]

James

It is not so much the speed of the FPGA as it is the FPGA itself. 
Any microprocessor designed and synthesized into a FPGA will run 
anywhere from 4 to 8 times slower than appropriate ASIC 
fabrication. 

Much of this is due to the routing issues within the FPGA. AN ASIC 
can better utilize real estate and provide better and faster routing. 

DOn't get me wrong there are some circuits that run as well in 
FPGA as ASIC. Speeds today are reaching 1 GHz and faster 
FPGAs. Equivalent gate sizes at around 6 million gates. 

james

On 8 Sep 2005 at 7:10, James Diffendaffer wrote:

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Date sent:      	Thu, 08 Sep 2005 07:10:24 -0000
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> > I have seen a Verilog Z80 core that will do up to  250 MHz in a 0.13
> > micron ASIC. In FPG A that is considerably slower. Even at 35 MHz is
> > still fast. 
> 
> Oops... my bad.  Prolly the same one.  But I've read companies are
> working on faster replacements for the current FPG technology that
> should bump up the speed.