Selectric Typewriter conversions

I converted a 2741 (20 yrs ago) since it already had all the solenoids intact. I think I used an ancient Byte article that gave instructions and some sample 8080 code - mostly lookup tables indicating which solenoids needed energizing for each char. It took, in all something like 12-17 coil drivers - including "shift". The 2641 did caps by first shifting, then printing - needed a delay subroutine. Perhaps it's listed in a Byte index or Best of Byte books. I don't think it would be feasible to do on a non-2741 unit, as you would have to find and connect to all those linkages - unless you connect a solenoid to ~each~ key ;) Get yourself an ASR-33 - much more fun and better noises! (I once had an ASR than moved itself off a table with each carriage return- until it went "thump" one too many times" and fell 2 feet to the concrete floor - still kept printering and worked flawlessy afterwards and continues to do so AFAIK... Heinz ----- Original Message ----- From: "Marvin Johnston" <marvin(a)rain.org> To: "ClassicCmp" <cctalk(a)classiccmp.org> Sent: Monday, February 03, 2003 9:54 PM Subject: Selectric Typewriter conversions