PDP-11 floating CSRs: 760010, or 760100?

[Fritz Mueller via cctalk]

Hi folks,

I have a question about floating CSR allocation on PDP-11s.  Both the 1976 and 
1981 versions of the PDP-11 peripherals handbook indicate the floating CSRs are 
to be allocated starting at address 760010.  However, both the XXDP FLOAT 
program and simh's autoconfig suggest I should set my DZ11 (first floating CSR 
device in my config) to 760100.  Anyone know what gives?

    thanks,
      --FritzM.