[Coco] Any news on the so called CoCo4 or NextCoCo projectthatBjork was heading?
jdaggett at gate.net
jdaggett at gate.net
Wed Nov 17 11:16:55 EST 2010
On 21 Oct 2010 at 12:18, Mark Marlette wrote:
> There could be a point made that a FPGA device is emulated(configurable)
> hardware..... ???? :)
I would not call an FPGA emulated hardware. I can see where one might think that. Instead it
is actual hardware that is configurable to one's need by software.
Within the fabric of the CLBs of FPGAs are LUTs. FFs, MUXs and other logic. What the HDL
does is describe how these components are to be wired. A 4 input LUT can be configured to
be a 4 input and gate, or gate, or just about any gate you want. Combining several LUTs and
you get evenmore complex logic circuitry.
FPGAs are indeed logic that is not so different from the 6800 or the 6809 or the 6811
processors. The software is nothing more than tools to help you wire up the building blocks of
the any circuitry you wish. If one wwere to look at the schematic of the 6800 processor you
would see gates. Lots of gates. Registers and lots of them. Now they may very well be
constructed differently than the fabric of an FPGA, they are still gates and flip flops. Same
elelments of an FPGA.
just my thoughts
james
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