Jake-S@cup.portal.com (Jake G Schwartz) (03/10/89)
For lots of good info on the last incarnation of this CPU ("nut"), check out Ken Emery's book "HP41 MCODE for Beginners". It goes through the entire instruction and register set and more. It's still available through Educalc at 27953 Cabot Rd, Laguna Niguel, Calif 92677. Phone is 714-582-2637 or 800-633-2252, ext 352. The book is 192 pp wirebound and costs $24.95. Jake Schwartz