ocr: ATARI 520ST ONE-MEGABYTE MUDIFICATIUN - NEW BUSS LINE LAYOUTI LOP VLEH SHOHN After you have completed soldering of all 16 ram chips re-mount all the imf bypass capacitors that were previously removed. Now using the diagram below you need to create (3) buss lines using #22 AWG solid tinned copper buss wire. Cut (2) - 9" lengths of wire and place the first wire along the top of the 16 chips so that it is touching the #4 RAS pins of the new set of rams remeber the ones you bent up 180 degrees before) and then solder the buss wire to each PIN #4 of all 16. chips. Now take the other 9" wire and run ...
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