The RK11 is the UNIBUS controller for the RK05 moving-head magnetic disk drive.
I know the octal data is correct, but I'm not sure about the mnemonics and the description.
This bootstrap will boot from any disk in a daisy-chained multi-drive configuration. Memory location octal 1006 contains the unit number, as follows:
RK11-C manual, 1971
RK11-C schematics, February 1971