DOS Beyond 640K, 2nd Edition

https://drive.google.com/open?id=0BweO6Y13Cmc4TGx4M2JkanJrbVE

DOS Beyond 640K p_000.jpg

For users who want or need to improve the performance of their PC/XT/AT or compatible computers–expanded memory is a must. This describes how anyone can break through the limitations of conventional DOS.

PDF Page numbers match the printed page 🙂

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