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Legacy Technology RAM Boards - A Question for UK Modders.

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John Swift:

I guess you could work it out from this 2102  data sheet -

http://www.nteinc.com/specs/2100to2199/pdf/nte2102.pdf

with all inputs at 5V  it gives the supply current as 45mA

the current will increase when your reading and writing to it

as the Power Dissipation as 1W it
looks like the current could  increase  to 200mA during the R/W cycle

    John

Pete W.:
Well, I managed to mislay the New Bear data but it turned up again yesterday!

The schematic diagram is an A2 diazo print but, with the help of our local print-shop, I've reduced it to an A4 print.  See pictures below.

I've also attached a copy of the New Bear assembly instructions. 

I've also tried to attach the same files in .pdf format but I'm getting an error message!

There are some hand annotations on the schematic diagram - I can't explain them at present.  I'll need to compare the schematic with the actual printed circuit board. 

Pete W.:
Here's an attempt to attach a .pdf of the schematic diagram:

(Sorry, it's on its side!) 

Pete W.:
And here's an attempt to attach the constructional details:

Pete W.:
I've scanned the printed circuit board.  The scans are attached.  They are, component side, reverse side and reverse side flipped left-to-right:

New Bear published a design for a 6800 based computer but that used a different format of pronted circuit board from the one shown here.  This board, as stated in the Constructional Details, is the same format as the Motorola MEK6800D1 evaluation kit and also that used in the larger professional 'Exorciser' system.  The principal physical dimensions are given on the schematic. 

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