These are tweaks for the newer "RAM & ROM" board?  That's the one we are 
going with (the one with the battery).  
I didn't realize there was an improved board at first.

Hopefully Andrew has time make these changes.

Ed


On Friday, May 9, 2014 11:29:34 AM UTC-5, monahanz wrote:
>
> Guys that board has  been superseded by the “RAM & ROM” board. See here:-
>
>
> http://s100computers.com/My%20System%20Pages/RAM+ROM%20Board/RAM+PROM%20Board.htm
>
>  
>
> There is nothing particularly wrong with that board (except it is somewhat 
> a bit of a pain to figure out the correct jumpers) but the newer board has 
> things much more organized  *and *has onboard battery backup capability 
> for the static RAM.  While it is fine as is, there are a few really minor 
> tweaks that would be nice:-
>
>  
>
> 1.       Connect pin 12 of U1D to pin 6 of P31
>
> 2.       Have ground pin option for pin 20 (CE) of U123
>
> 3.       Change the order of pins on K2 to avoid the need for wire-wrap 
>
> 4.       Remove bA14 label on U100 and U101 and join U100 pin 28 to U101 
> pin 28 (both go to P14,7).
>
> If Andrew has time to splice these in, it might be worth waiting for. If 
> so let’s call this board “V2 “ 
>
>  
>
> John
>
>  
>
>
>

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