[Info-vax] RB730 Integrated Disk Controller (R80/RL02) usable with VAX-11/750?

[Bob Koehler]

In article <ipt5am$d6v$3 at Iltempo.Update.UU.SE>, Johnny Billquist <bqt at softjar.se> writes:
> 
> That's what the Unibus Map is there for. The Unibus map sits between the 
> Unibus and the memory, and remaps DMA from the Unibus into the larger 
> address space of the memory bus. Same both on the 22-bit capable PDP-11s 
> and all VAXen. The exact details of the Unibus map differs between a 
> PDP-11 and a VAX, though, but the principles are exactly the same.

   Too me, that map is part of the memory subsystem.