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generally the register storage is faster than cache andmain memory also register addressing uses much shorter addresses than addresses for cache and
q vlsi implementation of control unita main potential advantage of risc is vlsi implementation of microprocessor vlsi technology has decreased the
q explain high performance of instruction executionhigh performance of instruction execution while mapping of hll to machine instruction the compiler
q risc performance using optimizing compilersperformance using optimizing compilers as instructions are simple compilers can be developed for
simple instruction formatsrisc uses simple instruction formats usually only one or a few instruction formats are used in these machines instruction
q explain addressing modes in riscsimple addressing modes another benefit is the use of simple addressing modes risc machines employ simple register
q register-to-register operands in riscregister-to-register operands in risc machines operation which access memories are load and store all other
q instruction per cycle in riscone instruction per cycle a machine cycle is total time taken to fetch two operands from registers perform alu
q explain about risc architecturelets first list some significant considerations of risc architecture1 risc functions are kept simple unless there is
q origin of riscin the 1980s a new philosophy developed having optimizing compilers which could be used to compile normal programming languages down
q observations of high level language programobservations integer constants appeared nearly as frequently as structures or arrays most of the scalars
with the increasing use of more and higher level languages manufacturers had offered more powerful instructions to support them it was claimed that a
q code density and smaller faster programsmemory was very expensive in older computer so there was a need of less memory utilization which is it was
q explain microcode and vlsi technologyit is considered that cu of a computer be assembled using two ways create micro-program which execute
in the past there was a large gap between speed of a memory andprocessor so a subroutine execution for an instruction for illustration floating point
q show various risc processorsrisc has fewer design bugs and its simple instructions decrease design time sodue to all the above important reasons
q show the importance of risc processorsreduced instruction set computers recognize a comparatively limited number of instructions one benefit of a
the goal of computer architects is to design computers that are cheaper and more powerful than their predecessors a cheaper computer has low hardware
q decoding of slightly encoded micro-instructionsgenerally micro-programmed control unit designs are neither totally unencoded nor highly encoded
highly encoded micro-instructions encoded bits required in micro-instructions are small it provided an aggregated view that is a higher view of cpu
unencoded micro-instructions one bit is required for each control signal so number of bits needed in a micro-instruction is high it represents a
q characteristics of extreme unencoded micro-instructions1 two sources can be attached by respective control signals to a single destination though
the micro-instruction cycle can comprises two basic cycles the fetch and execute here in the fetch cycle address of micro-instruction is produced and
q explain types of micro-instructionsin general micro-instruction can be classifiedin two general kinds these are non-branching and branching after
q instruction of a micro-programa micro-instruction is an instruction of a micro-program it specifies one or more than one micro-operations that can