This is a lot of 4 vintage Rockwell R6500 Microprocessor Family Programming Reference Cards for sale individually or together!
These rare summary cards were published January, 1984. They include a comprehensive instruction set, operation code table, and even punched tape format. This operating manual was previously owned by a professional programer who kept it carefully stored until his untimely recent passing. It is part of a number of vintage manuals being sold off along with several electronics from his collection.
*All photos are of the item being shipped and more can be provided upon request.*