Ok, so the obvious question is...
If I add a 2nd bay.....
1) How unobtanium are the parts necessary to bolt the two H960 racks
together?
IIRC, it's just 8 nuts and bolts. Or at least that's what I used to fix
the 2 racks of my 11/45 system together.
2) Can the MF11-L be present in the machine along with
the M7891 in the BA11
(in the 2nd rack)? Can both the core and the semiconductor be used at the
same time? Or do I need to pull the core boards out of the MF11 to use the
M7891 in the BA11?
You can have any mix of memory up to the maximum amount your processor
can address. If you have the KT11-C boards, you could, for example, have
32kW card and 92kW MOS (remember 4kW of the address space goes to the I/O
page). Provided you give all the boards the right power, it'll work fine.
-tony