Question
Download Solution PDFIn a microprocessor, the register to hold address of next instruction to be fetched is
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFProgram counter (PC):
- The program counter acts as a pointer to the next instruction to be executed and always contains the 16-bit address of the memory location of the next instruction
- It is a 16-bit register as 8085 has 16 address lines
- The program counter is updated by the processor and points to the next instruction after the processor has fetched the complete instruction.
Stack Pointer:
- Stack Pointer is also a special purpose register that is used to point the location of the top of the stack.
- Since location is specified using 16 bits, the stack pointer is a 16-bit register.
Accumulator: An accumulator is a register in which intermediate, arithmetic and logic results are stored.
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