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Program Control
2-10
2.4 Program Control
Several features provide program control:
The program controller of the CPU decodes instructions, manages the
pipeline, stores the status of operations, and decodes conditional opera-
tions. Elements involved in program control are the program counter, the
status registers, the stack, and the address-generation logic.
Software mechanisms used for program control include branches, calls,
conditional instructions, a repeat instruction, reset, and interrupts.
For descriptions of these program control features, see Chapter 5,
Program
Control.
Program Control