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  1. M

    Looking for Unibus core

    I'm looking for core memory for my PDP11/20, including especially the required backplane. (This machine delivers power to the backplane sections with paddle-boards, not with the Molex connectors on later Unibus machines.) If you have any parts for Unibus core memory that's compatible with an old...
  2. M

    To AMON Users

    I've just found (and fixed) a bug in my AMON monitor. This bug will cause the AL command (for loading "absolute Binary" files, such as MITS Basic) to fail if the console port is also the transfer port. This bug exists in AMON versions 2.8, 2.9, and 3.0. Here is AMON 3.1, which corrects this...
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