On 11 September 2013 15:03, John McKown <john.archie.mck...@gmail.com> wrote: > Also, on DOS, I remember some sort of command the operator could issue to > open it. I don't remember what the CCW was called, perhaps "open gate"?
The handy S/370 yellow card on my desk (the March 1974 version) shows the 3211 having a "Raise Cover" CCW opcode 6B. This to some extent confirms my memory that the 1403 raised its cover only under operator command or running out of paper. Tony H. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
