Early PDP-11/45 backplane SPC power

[Fritz Mueller]

Just a follow-up here: Marty over at vcfed.org took a look at his
11/45, and he does have +15 (+12 in his case) to CU1 on slots 26-28.
His notes indicate a wire from slot 15 (because of his setup he can't
conveniently inspect his backplane).  It's
not clear whether this is from factory, and ECO, or a user mod.

Marty's machine does not have power to CA1 either, so it really does
look like this is a typo in the DEC docs.