Design of a Computer: The Control Data 6600

30 bits 60-bit word adder address register binary block transfer Boolean Branch instruction buffer carry-save Central Processor Central Storage chassis circuit circular buffer coefficient control point CPU registers DATA TRUNK Disk Storage double precision ECS Coupler example Exchange Jump execution exponent Extended Core Storage ferrite magnetic Fixed Add Unit floating point functional unit INCR Increment Unit IND IND IND initial input operands instruction stack instruction word ISSUE load Logical Difference magnetic minor cycle MULT nanoseconds normalized octal one's complement operating system output partial product PERIPHERAL PROCESSORS PPU storage PPU's primary storage program address Read Flag result register Return Jump right shift SCBD Scoreboard secondary storage shift count shift network shown in Figure sign bit signal single precision six bits storage location storage reference storage unit STORE Stunt Box Subtract Sum of Xj tion transistor twelve-bit Xj and Xk Xk to Xi zero