Among others, DEC OEM'd Documation card readers. https://www.youtube.com/watch?v=se0F1bLfFKY
And old friend - the 1442 reader/punch: https://www.youtube.com/watch?v=w62NC1R6WLs And with the covers open https://www.youtube.com/watch?v=gfRxpmiScPA I didn't find audio of the punch - which was quite noisy (and slow). Note the dual output trays - program selectable. Often one used for accepted data, the other for rejects. Operators interested in throughput (or lunch) would, contrary to instructions, try to load and unload while the reader/punch was running. This could produce entertaining results. (Jams - and avian cards...) So could the first time an operator encountered the "chad bin full" error condition... On 13-Feb-20 10:27, Richard Cornwell wrote: > Hi Mark, > >> 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 considered adding these to my card simulation. I could also add > the feature that it will once in a while overwrite the currently > reading card with random junk. > > sim_card, basically give you translation from the various formats > into a punched image of the card. Or it takes a punched image of a > card and translates it to ASCII or other formats. It can also > auto detect most common card deck format. Currently supported formats > are ASCII, CBN, Binary, card, EBCDIC. Also if it can't translate a > card to ASCII it will generate an ~raw card with octal values. > >> 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. > Let me know if you have any questions or need things added. sim_card > is currently used by all of my simulators. You might need to tweak > the translation tables, if so let me know. > >> 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. > I am sure we could get some clips. > > Rich > >> >> Get BlueMail for Android >> >> On Feb 13, 2020, 6:51 AM, at 6:51 AM, Bob Supnik <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 > >
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