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Thread: Honeywell 200 resurrection

  1. #111


    Not sure if anyone is out there, but have made some progress and even implemented a GUI front-panel. Not 100% functional yet, but getting close. Here is a short video of it running MACHIN. The real-time display of address/data really slows it down, even if it is limited to just SR and op-code (as shown here).

  2. #112


    I have setup a project page for my effort. There is a download page linked from there where you can get the "jar" file for the virtual H2000. I'm still hoping to find folks that can help, with either more details on how the machines operated or with code to run.

  3. #113


    Hi durgadas,

    My sincere apologies for not responding earlier but I haven't been getting notifications of new posts on the thread for some reason. Ah, you just can't trust these computer thingies can you?

    I am truly impressed by what you have done. That is a lot of work. As I mentioned on my website I had contemplated designing a visual emulation of the control panel but decided that some direct graphics software would be needed to work fast enough. I looked at the possibility of using DirectFB under Linux, but my work on the actual hardware has to take precedence. As the pictures on my website are generated from text files using PovRay I have all the measurements of the control panel shown there, although the real thing may be slightly different. I'll find out when I finally get it from California. When I can find the time I'll see whether my graphics can be incorporated into your programme as I spent a long time making them as realistic as possible.

    MACHIN was written to run in ADMODE 2 but there is no CAM instruction in it as it was intended to be run on a minimum configuration machine which would always be in ADMODE 2 anyway. I can't remember what the initial ADMODE was on the larger machines. Regarding the assembler, I did once have a listing of the Easycoder A assembler source code but it looks like it got thrown away at some time, which I deeply regret now.

    After working in Easycoder on a small machine in the 1960s I moved on to using COBOL on the bigger machines in the 1970s, so my knowledge of them at machine level is by no means so detailed. I am happy to try working out any of the problems with you though. I'll also check my previous contacts with former H200 series users who might be interested. Most people just can't remember much of the details now though.

    It's my wife's birthday today, so I have pressing commitments now, but I just wanted to reassure you that I am still around and my project is crawling along. It gets boring if I just keep reporting my lack of progress on the thread, which is why I haven't posted anything for a while, but I'm hoping to get back to work on it soon. I'll get back to you. Keep up the brilliant work.

    Rob -
    The Internet is a winch to get your project off the ground ... but always have a parachute handy.

  4. #114


    A little off-topic.
    "Aroma Therapy" - I had the chance to walk the hallowed halls of an old IBM facility recently, and as I ducked into a stairwell, was overcome with nostalgia... the source was a distinct smell from my past...

    The gentle blending of
    cigarette smoke, machine oil, and punch-card chad,
    slow-cooked on an electric motor,
    infused into linoleum.

    It survived fifty years in the linoleum of that stairwell... ah, the good old days...

  5. #115
    Join Date
    Apr 2016
    South Florida


    Just found this after losing track of it for the last couple of years, but alas, apparently RobS is no longer contributing ?

    I was a Field Engineer with Honeywell I.S. back in the 70's in Los Angeles. trained originally in the 400/1400 line of second generation computers, and was privileged to help do preventive maintenance one afternoon on an old D-1000 vacuum tube computer before it was finally decommissioned.

    During five years at Honeywell I worked on H 115 and 125, H200, 1200 and 2200, but spent my major time working an a dual H4200 site (Blue Cross Blue Shield of Socal). from 1974 to mid 1975 I worked all over, but spent major time at a dual H2070 site in El Segundo (Kaiser Permanente). I have looked around for pics of the H2070, and once found a guy in Australia who sent me some, but they have somehow disappeared from my files. If anyone still has some, please send me a pointer.

    Hope all is well with RobS...very cool project he has undertaken.


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