> On Mar 17, 2018, at 6:57 PM, Fritz Mueller <fri...@fritzm.org> wrote: > > 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?
Ah, I found the answer in the DZ11 technical manual: gaps are left for between each device type that gets a floating CSR. So for one DZ11, you get: gap 160010 (no DJ11s) gap 160020 (no DH11s) gap 160030 (no DQ11s) gap 160040 (no DU11s) gap 160050 (no DUP11s) gap 160060 (no LK11s) gap 160070 (no DMC11s) DZ11 160100
