allocate floating vector for DR11-C in simh pdp11 autoconfig?

[Fritz Mueller via cctalk]

Hi folks,

I have found it very convenient to maintain a simh configuration that parallels 
the physical hardware configuration of my PDP-11/45.  I'm just about to add a 
DR11-C for a physical interface that I am building -- this will "grab" a 
floating interrupt ahead of a DZ11 that I already have in the machine.

Does anyone here know of convenient way to inform simh's autoconfig that I wish 
to insert a DR11-C?

        cheers,
          --FritzM.