**ITS console panel functions**

If you are lucky to run ITS on a
  * real KA10,
  * PiDP-10,
  * KL10 with KL-UDGE board, or
  * emulator with Panda Display board

You will have some lights and switches.  In addition to the normal functions, ITS has some more:

The memory indicator lights show which job is running.  This can be disabled by setting MIPGDS to -1.  To control the lights from a user program, use .IOTLSR to enable IOT user mode and write to the lights register with DATAO PI,AC.

Data switch 0 will make ITS go to NTS DDT.  This is very useful to set breakpoints etc, for debugging ITS.  Switches can be read from a user program with DATAI APR,AC.

On the PDP-6, the memory indicator lights are connected to speakers.