Baseline H-11 board set? - test-drb@ccmp.vtda.org

22 Jun 2007

Ethan Dicks said:

...
  What I haven't been able to find online is a list
of the boards that
 an H-11 typically shipped with.  I know it used an LSI-11 (11/03) CPU,
 so there's that, plus a console SLU board, probably a Heath one (don't
 know the part number), the H-27 host card, and at least 16K of RAM,
 I'm figuring, but is there anything else?  In particular, I'm thinking
 about bus termination... an unremarkable PDP-11/23 board set might be
 a KDF-11 + MSV11 + RXV11 + DLV11E + BDV11... that gives you (in order)
 CPU, memory, disk, console SLU, and bootstrap/terminator.  What's the
 equivalent combo for an unremarkable H-11? 
I'm certainly no expert on Heath gear, or DEC gear for that matter, but I've been

lucky enough to snag a couple of H11s in the last year.  Here's what are in my two 
systems:

Sytstem 1:
- M7270 : KD11-HA : LSI 11/2 CPU
- WHA-11-16 : 16KB memory
- H-11-5 : Serial I/O
- H27 : Floppy I/O
- M8028 : DLV11F : Async SLU
- WHA-11-16 : 16KB memroy

System 2:
- M7270 : KD11-HA : LSI 11/2 CPU
- MSC 4601 : 16KB memory
- H-11-5 : Serial I/O
- H27 : Floppy I/O
- H-11-5 : Serial I/O
- H-11-5 : Serial I/O

I haven't been able to test these out yet, though I have gotten as far as reforming 
the PS capacitors and running the PSs thoroughly.

I have some original documentation for the H-11-5 serial boards, and comparing 
that with the DEC handbook I discovered that the configuration jumpers, etc. are 
essentially the same as the DLV11.

If these two systems are at all 'ordinary' and 'unremarkable' then there
you go!  
Hope this helps!

BTW, I might have HT11 on floppies hidden in some boxes.  Haven't yet gotten to 
doing the software inventory.

- J