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    In case you’re wondering what is interesting about this, consider the end of the abstract:

    Basically we took a legacy system running on PDP-11 mini computers and ported it to a PC based platform utilizing a proprietary co-processor card (Osprey Co-processor) to run the application code (an Ericsson JZA 715 product). This runs inside the Co-processor completely, emulated cycle by cycle, and the PC host platform acts as the interface between the outside world and the application. The systems have performed exceptionally well for the last 6 years.

    Basically it’s important infrastructure running on an emulator on Windows XP.

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      Emulating a PDP11 in cards attached to a PC running XP.