[En-Nut-Discussion] Ethernut 2.0 Alpha Schematic

[Austin Schutz]

On Mon, Oct 21, 2002 at 10:10:26PM +0200, Harald Kipp wrote:
> For those of you with Eagle installed and
> interested in a first, rather incomplete
> version of Ethernut 2 Alpha, please download
> 
> http://ethernut.de/arc/enut2as.zip
> 
> Comments are most welcome.
> 

	Are the analog input pins still going to be mirrorred? :-)

	Why the SMC chip for ethernet?


	Also, I attached my idea for bank switching. I don't have the full
version of eagle so I can't ammend the Ethernut schematic. I'm also not very
skilled with eagle, but I hope the idea is clear:
	By writing to 0xFFXX you switch to bank XX. This allows for switching
up to 8MB of sram.  Alternatively, you could take some of the address pins and
use them for other switched devices if you didn't need to address the full 8M.

	In order to use the lower 32k of memory without switching the high
address pins may need to be driven low when the latch is not enabled. Maybe
add a bank of grounded resistors to force the bus low when not driven by the
latch?
	
	Austin
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