Re: 1541IDE and 1541IDE-S -- and 8250IDE? (and 64IDE, now)

From: Jim Brain (
Date: 2007-12-14 22:29:30

raycomp wrote:
> On Dec 13, 2007, at 5:49 PM, Jim Brain wrote:
> I do not see the need for all the ground plane on this board.  It is  
> not an RF circuit in need of shielding, is it?
No, it's not for RF.

Yes, given the simplicity of the circuit, the ground plane is not 
necessary.  However, it's so easy to create one in EAGLE, I see no 
harm.  As well, during etching, a ground plane removes less copper.

> I do not need to get the etched  board myself, I still have 5 or 6 of  
> the proto-typing boards with the EXP port card edge connections these  
> have a slim buss all the way around the outside (top and bottom) that  
> could be connected to the 4 grounds of the port (or one side could be  
> ground the other VCC buss).  My problem with the proto-types is that  
> I would have to wire-wrap to achieve the red layer connections.  but  
> with sockets on the top side the wires could work on the top-side.
> The card edge fingers are longer on these proto boards too.

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