On 2020-02-13 9:49 AM, Mark Emmer wrote: > Any good simulation would have to include the semi-real I/O instructions > RCC (Read and Chew Card) and DPD (Drop and Pie Deck).
I was aware of the "pie" verb describing typesetters dropping made up type... TIL it survived into the punch card era. --Toby > > I'm with you about never again struggling to remove a card from the read > gate that had been converted to a mini-accordion or measuring the size > of a progrram in boxes, not bytes. > > I'm traveling for several weeks, but when back home I will assist Ken in > getting an SDS driver for the reader/punch if he hasn't completed the > task by then. All needed documentation is in the 940 Reference Manual. > > I wonder if anyone has sound recordings of a reader/punch? That would > be a nice addition to a blinkenlights implementation, which is on my To > Do list. > > Mark > > > > Get BlueMail for Android <http://www.bluemail.me/r?b=15774> > On Feb 13, 2020, at 6:51 AM, Bob Supnik <b...@supnik.org > <mailto:b...@supnik.org>> wrote: > > 1. I can confirm that RT11 V5.3 INIT does not work properly with an RL02 > in 3.10. > > My next step is to trace back changes, because I think it used to work. > > 2. There's no card reader for the SDS 940 because > > a) I hate card readers (from having used them way back when) > b) I thought there wouldn't be any demand > > Rich Cornwell's library should make it easier to implement a card reader > these days. > > My first card reader story goes back to an RCA Spectra 70 I used in 1965. > It had a vacuum pick reader for high speed operation. The reader would > gradually curl the front edge of the cards, so that after two or three > passes, the deck was unreadable. It's failure mode was to spit cards out, > past the receive hopper, at very high velocity and scatter them ten or > fifteen feet out on the floor... > > The second was a very slow mechanical reader on a PDP-7 in 1966. The > only other keyboard device was a Teletype, so initial entry of programs > was done from punched cards. It read, allegedly, 100 cards per minute > using mechanical fingers with little star wheels on the end. DEC field > service was in almost every week tuning or fixing the damned thing so > that it could actually handle a decent-sized deck. > > In my experience, only IBM built decent card readers. The reader/punch > on the 1620 (I used one in 1964) was very sturdy, and the 407 (used for > offline printing of punched card output) could read almost anything. > > /Bob > > > ------------------------------------------------------------------------ > > Simh mailing list > Simh@trailing-edge.com > http://mailman.trailing-edge.com/mailman/listinfo/simh > > > _______________________________________________ > Simh mailing list > Simh@trailing-edge.com > http://mailman.trailing-edge.com/mailman/listinfo/simh > _______________________________________________ Simh mailing list Simh@trailing-edge.com http://mailman.trailing-edge.com/mailman/listinfo/simh
