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Thread: LSI-11 experimentation project

  1. #1

    Default LSI-11 experimentation project

    I haven't touched my DEC stuff in a couple of years, but now getting back to it again.
    In the picture below:
    LSI-11, 32KW RAM, DLV11-J.
    The backplane is from a VT-103. The power supply is from a Rainbow.
    The console goes to a simple level converter (from Sparkfun), which then goes to a T.I. MSP430FR5994 eval board, which then goes to my PC via USB.
    The TI board includes a micro-SD card socket. I wrote an app for the TI board that is like an "intelligent terminal emulator", in combination with Putty running on my PC. The app lets me (for example) load a serial bootloader via ODT, then load/unload images in/out of RAM.
    I have a stand-alone image of Forth working on the setup. The bootloader loads in about 5 seconds (via ODT), the Forth image loads in 10 seconds (in binary; it is 5.5KB). The images are stored on the SD card, or can be dumped to Putty.

    Pete
    DEC_LSI-11.jpg

  2. #2
    Join Date
    Mar 2006
    Location
    Salt Lake City, UT, USA
    Posts
    295

    Default

    The backplane is from a VT-103. The power supply is from a Rainbow.
    I love the ingenuity

  3. #3
    Join Date
    Jul 2014
    Location
    Germany, near Göttingen
    Posts
    28

    Default

    Thumbs up for this working combination

    If you want to make some further development on it - do you know Joerg Hoppes LSIbox Project?
    http://www.retrocmp.com/projects/lsibox

  4. #4

    Default

    Quote Originally Posted by Wildfire View Post
    Thumbs up for this working combination
    If you want to make some further development on it - do you know Joerg Hoppes LSIbox Project?
    http://www.retrocmp.com/projects/lsibox
    Thanks! And yes, I had looked at that page recently. I'm now trying to decide on packaging options. I switched to a H9281 4-slot-dual BP, and added an 11/03 switch panel. I have an industrial server PS that is smaller than the Rainbow supply. I may add a period-correct 7-segment display...

    Pete

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