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Re: [cosmacelf] Genuine RCA COSMAC Develpment Systems & Bits & Bobs

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  • Andrew Gamble
    Pierre, No sorry don t have what you describe. The ones I have are the RCA unit not an emulator. They are the MCDS type units. Regards Andrew ... From:
    Message 1 of 11 , Feb 28, 2005
      Pierre,

      No sorry don't have what you describe. The ones I have are the RCA unit not
      an emulator. They are the MCDS type units.

      Regards
      Andrew
      ----- Original Message -----
      From: <jplagasse@...>
      To: <cosmacelf@yahoogroups.com>
      Sent: Monday, February 28, 2005 4:02 PM
      Subject: Re: [cosmacelf] Genuine RCA COSMAC Develpment Systems & Bits & Bobs


      >
      > Hi Andrew,
      >
      > With the development systems, Do you have any
      > "Micromoniter" emulation units?
      > The ones I've seen are black suitcases with an internal
      > keypad, display & electronics... including socket/cable to
      > replace an existing 1802 etc.
      >
      > These units, if you have them, are quite useful and can be
      > hooked up to a PC through it's serial port.
      >
      > Regarding the development systems themselves...
      > Do you also have the floppy disk unit also?
      > Any original software??
      >
      > We had two of these complete systems years ago, and were
      > used for the original 1010/PVT software/hardware
      > development (1802 based DAQ system).
      > Eventually, i serial ported the system software out into a
      > modern PC... & used an avocet assembler instead.
      > The Micromonitor emulators were then used with the PC...
      >
      > Got to get back to work though,
      > Later,
      > Regards,
      > Pierre
      >
      >
      >>On Sun, 27 Feb 2005 21:10:47 -0000
      >> "Andrew Gamble" <andrew@...> wrote:
      >>
      >>
      >> I have been recently clearing out a cupboard and come
      >>across 3 RCA
      >> COSMAC development systems. These are the genuine
      >>industrial ones
      >> produced by RCA themselves in 1981. They include "slot
      >>in" boards
      >> and a backplane/chassis arrangement. I purchased these
      >>around 1981
      >> when they were almost new when a local company
      >>developing robotic
      >> test equipment went out of business. I also have a
      >>quantity of
      >> CDP1802 CPU chips and other peripheral chips all not
      >>used since
      >> then. Also some custom BUS cards produced by the company
      >>using the
      >> RCA micros.
      >>
      >> The development systems consist of a cpu / memory board.
      >>I/O board,
      >> Eprom programming board and BASIC interpeter board.
      >>
      >> Reading some of the messages on this group I see a
      >>number of ELF
      >> units but nothing on the professional type units that I
      >>have. The
      >> serial numbers on the chassis are 1000 and others around
      >>that
      >> number. Does anybody know anything about these units?
      >>Should I tip
      >> them out or are they in demand any more? I know that
      >>when I last had
      >> a tinker about with them they all worked linked up to a
      >>dumb
      >> terminal and cassette deck but they have been lurking
      >>around in the
      >> corner of a cupboard for years.
      >>
      >> I would like any info on these and also to hear if
      >>anybody is
      >> interested in them.
      >>
      >> Thanks in advance.
      >>
      >
      >
      >
      > ========================================================
      > Visit the COSMAC ELF website at http://www.cosmacelf.com
      > Yahoo! Groups Links
      >
      >
      >
      >
      >
      >
      >
      >
    • Kathy Quinlan
      ... I have a few leads, but even on AU ebay, it is getting thin :( ... Well when he comes up with a rough price ;) I can consider it lol ... -- ... K.A.Q.
      Message 2 of 11 , Mar 1, 2005
        Al Winfrey wrote:

        >
        > --- In cosmacelf@yahoogroups.com, Kathy Quinlan <kat-yahoo@k...> wrote:
        >
        >
        >>I have been looking for a backplane and chassis to build an 1802 system
        >>into for years now :(
        >>
        >>AU does not seem to have the sort of JUNK the USA does :(
        >>
        >
        >
        > Kathy,
        >
        > Maybe you are just not looking in the right places for the "junk". In
        > the US electronic surplus or "junk" is dispersed by swap meets,
        > hamfests and of course eBay. Some areas like Silicon Valley would
        > probably have many more surplus outlets than others but that's way
        > too-far for me to drive for "junk". Indianoplis has one or two
        > surplus stores but not like it had a few years ago. A lot of that
        > stuff is being "recycled" nowadays.
        >
        > I've seen plenty of eBay adds from "Oz" and so I know that you do have
        > a supply of junk too. It's often difficult to find a specific item at
        > a hamfest or swap meet even in the US. In recent years I see fewer
        > and fewer items backplane-chassis that you mention but one just has to
        > keep looking. I've spent whole summers driving to swap meets and
        > hamfests looking for specific items. The internet makes searching much
        > easier.

        I have a few leads, but even on AU ebay, it is getting thin :(


        > Maybe that postage of Andrew's development systems won't look so bad
        > to you if you consider the other costs of finding what you are looking
        > for!

        Well when he comes up with a rough price ;) I can consider it lol


        > Anyway good luck with your trek.
        >
        > Al Winfrey
        > New Palestine, IN, USA
        > ....
        >
        >
        >
        >
        >
        > ========================================================
        > Visit the COSMAC ELF website at http://www.cosmacelf.com
        > Yahoo! Groups Links
        >
        >
        >
        >
        >
        >
        >
        >


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