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Q. Define General Purpose Register Architecture?
General Purpose Register (GPR) Architecture: A register is a word of internal memory similar to the accumulator. GPR architecture is an extension of the accumulator idea it implies that use a set of general-purpose registers thatshould be explicitly named by instruction. Registers can be used for anything either holding operands for operations or temporary intermediate values. Dominant architectures are PDP-11, IBM 370 and all (RISC)Reduced Instant Set Computer machines etc. Major instruction set characteristic whether an ALU instruction has two or more operands splits GPR architectures:
'C = A + B'may be implemented on both architectures as:
Register - Memory Load/Store through Registers
LOAD R1, A LOAD R1, A
ADD R1, B LOAD R2, B
STORE C, R1 ADD R3, R1, R2
STORE C, R3
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