Interleaved memory on 780 (boot floppy changes)

[Dave Martindale]

If you have the old MS780-C memory, then a single controller does no
interleaving.  If you have two of these controllers, you must add several
"DEPOSIT" commands to the defboo.cmd command file on the floppy to
set the "interleave" bits in the controllers before loading UNIX.

If you have the newer MS780-E memory, then a single memory box actually
has a pair of controllers which are normally interleaved; you don't need
to do anything to turn it on, and thus can use the defboo.cmd unmodified.