KB11-C CPU

The KB11-C CPU is the later CPU for the PDP-11/70; it is basically the same as the earlier KB11-B CPU, except that it uses the FP11-C Floating-Point Processor instead of the FP11-B Floating-Point Processor

Boards

The basic KB11-C consisted of fifteen hex boards, basically the same board set as the earlier KB11-B, except that two boards:

• M8133 ROM and ROM Control
• M8138 System Status Registers

were replaced with the:

• M8123 ROM and ROM Control
• M8138-YA System Status Registers

respectively.

Note: The "PDP-11/70 Maintenance and Installation Manual", EK-11070-MM-002, refers to the M8133 in board lists for the KB11-C where M8123 is meant.