VINTAGE IBM TECHNICAL REFERENCE OPTIONS AND ADAPTERS 2 BOOK SET. This 2 volume set will give you the ability to diagnose and debug all options and adapters of the original IBMPC line of equipment. Detailed descriptions of the hardware, software considerations,logic diagrams, and schematic diagrams are included. The books are in near mint condition. I used them to pinpoint and replace a defective ttl ic on the original fixed disk adapter. You will see my notes on the fixed disk adapter logic diagrams.

These books do not have any updates in them. They cover all of the originally announced IBM adapters and devices. You will see which features are covered in the photo's I uploaded. I am the first owner of the books. They have been kept in warm dry storage for the last 35 years. Thank you for viewing my listing.