[Simh] Issues with VH simulation and 4.3BSD-Quasijarus

[Al Kossow]

On 3/9/17 11:18 AM, Cory Smelosky wrote:

>>  3. I never saw a real DEC DH on a Vax because of power and space issues.
>>  4. That said, we used to mix DEC DH11s and Able DH11's on the PDP-11
>>     all the time
>>  5. Able DH11's were the most used serial controllers in BSD UNIX land
>>     for a long, long time, which is why the default BSD configs all
>>     probe for them.
>>

It appears a DH driver existed for VMS at some point
http://www.decuslib.com/decus/vax000/catalog.94a

DH clones were commonly used on BSD. I got some old Infotron ones (ca. 1977) and we ran
32 lines on a 750 in the early 80's.