COMPUTER SCIENCE AND ENGINEERING
COMPUTER ARCHITECTURE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Status register
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Setting register
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Super register
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Sorting register
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Detailed explanation-1: -The status register is a hardware register that contains information about the state of the processor. Individual bits are implicitly or explicitly read and/or written by the machine code instructions executing on the processor.
Detailed explanation-2: -14.4. Status registers are used to test for various conditions in an operation, such as ‘is the result negative’, ‘is the result zero’, and so on. The two status registers have 16 bits and are called the instruction pointer (IP) and the flag register (F): • IP, which is the instruction pointer.
Detailed explanation-3: -This is an application-level alias for the Current Program Status Register (CPSR). The system level view of the CPSR extends the register, adding system level information. Every mode that an exception can be taken to has its own saved copy of the CPSR, the Saved Program Status Register (SPSR), as shown in Figure 10.2.
Detailed explanation-4: -The PSRs are subdivided into three status registers: Application Program Status register (APSR) Interrupt Program Status register (IPSR) Execution Program Status register (EPSR)