ocr: ATARI 520ST ONE MEGABYTE RAM UPGRADE PIN LAYOUT AND CHIP PLACEMENT OF RAMS de HAREHS2 AAI - - - I HHHHH - - + - 10 11 12 131415 16 1234567 de PIN LHYUUT OF SIHNUHRL 256K DYNAMIC RAM 1. new Bend ram the #4 emips and so #15 they pins 1ook a5 opwards they on do the. nere. 16 PART # 41256-15, 150ns rating. Quantity required for modification - 16 REQUIRED PARTS AND TOOLS - a : - 16 4 41256-15 256K DYNAMIC RAM CHIPS 1 1 15 WATT SOLDERING IRON (FINE TIP TYPE) - - s 1 DESOLDERING WICK/BRAID AVAILABLE FROM - RADIO SHACK 5 6 7 8 9 1011121314 1516 1 2 D3 4 TUBE/ROLL OF FINE 60/40 ROSIN CORE TYPE RADIO EL ...
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