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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
Write 8086 initialisation routine required to program 8255 for mode 1 with Port A and Port B as output Ports and Port C as an input port. Indicate all the relevant signals.
Q Convert the following DECIMAL numbers into HEXADECIMAL, double check by converting the result HEXADECIMAL to DECIMAL. a) 24 b) 547.56
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Define in detail about the Architecture Architecture is the set of resources visible to machine language programmer: Registers, the memory, data representations, instructions
What are its advantages? How is segmentation implemented in typical microprocessors? The first benefit that memory segmentation has is that only 16 bit registers are necessary
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real world applications
Q. Main drawbacks of CD-ROMs? The main drawbacks of CD-ROMs are: It is read only thus can't be updated Access time is longer than that of magnetic disks. Very
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