Da11-f unibus window is 4 slots and has two complete unibuses (I have one)
On March 30, 2025 6:17:05 PM CDT, Ethan Dicks via cctalk <cctalk@classiccmp.org> wrote: >On Sun, Mar 30, 2025 at 11:06 AM Jon Elson wrote: >> On 3/29/25 21:05, Ethan Dicks wrote: >> > On Sat, Mar 29, 2025 at 9:46 PM Jon Elson wrote: >> >> In the "old" days, such as the 1970's, pretty much any >> >> DEC-manufactured peripheral was supplied as a bunch of cards >> >> that plugged into a specific backplane section, generally 9 >> >> slots, I think. A couple double-wide slots were for the >> >> Unibus in and out connectors. >> > There were plenty of 9-slot system unit peripherals, but there were >> > also 4-slot system unit peripherals in the early days. > >I also remembered a couple other 4-slot system unit peripherals I have: > > RK11-D > VT11 > >Probably the most common 9-slot system unit devices I've encountered are: > > RK611 (which happens to have a couple of available SPC slots) > DH11 > RH11 > >But there are many of both sizes. > >Cheers, > >-ethan
