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Different parts of instruction execution happen in different places:
- Control Unit - fetches, decodes, and distributes decoded instructions to other units.
- Arithmetic Logic Unit - performs arithmetic and logic instructions on command from Control Unit.
- Input/Output Unit(s) - performs input/output instructions on command from Control Unit.
- Memory Unit - stores instructions and data, transfers them to/from other units on command from Control Unit.
What else can I help you with?
What technology called a processor can begin executing an instruction before it completes the previous instruction?
The 8085 microprocessor does not prefetch instructions. The 8086/8088 and higher microprocessors do, in order to boost performance. They are trading idle time in the bus-interface unit, idle time waiting on the execution unit, in order to attempt to have the next instruction already fetched and available when the execution unit finally needs it. This is done by separating the execution unit from the bus-interface unit, and allowing them to operate somewhat asynchronously. Since most instructions will be followed by instructions at the next higher address, this can boost performance by minimizing idle time.
What are the four distinct actions that a machine instruction can specify?
• The processor fetches the instruction from memory • Program counter (PC) holds address of the instruction to be fetched next • PC is incremented after each fetch • Fetched instruction loaded into instruction register
What is meant by 'test and branch instruction'?
test and branch instruction
Which instruction set is used by the itaniums processors?
EPIC, which stands for Explicitly Parallel Instruction Computing.
How can I programmatically stop the execution of a MATLAB program?
To programmatically stop the execution of a MATLAB program, you can use the "return" statement or the "error" function to exit the program at a specific point. This will halt the execution and return control to the calling function.
What is instruction execution?
The definition of instruction execution is the process of carrying out an instruction by a computer. This is what was formerly known as a command execution in DOS.
Does an interrupt actually interrupt the execution of an instruction at any time during the instruction execution cycle?
Yes , an interrupt actually interrupt the execution of an instruction at any time during the instruction execution cycle.AS there the execution takes in 4 t cycles and t3 to take up the data and the 4th cycle for execution,if there is an interruption then there will be an interruption any time in any instruction execution cycle.
What is instruction execution time In what unit is a computer speed measured?
about instruction execution time
What happens when halt instruction is executed?
The processor stops and goes to the halt state. If an interrupt occurs, it responds and then continues execution.
What is an instruction phase together with the execution phase called?
The instruction phase together with the execution phase is called a "Machine Cycle".
What are the two types of instruction execution?
The two types of instruction execution are pipelining and not pipelining. Pipelining involves breaking down instruction execution into multiple stages that can overlap, improving efficiency. Not pipelining involves executing one instruction at a time without overlapping stages.
What are the different phases in instruction execution explain?
Instruction execution can be divided into five phases. These are Phase-I: INSTRUCTION FETCH (IF) II: INSTRUCTION DECODE & OPERAND FETCH (ID) III: EXECUTION (EX) V: MEMORY OPERATION (MEM) V: WRITE BACK (WB) - Regards, Subhradip Das
What will be the contents of PC after the execution of RST 4 Instruction?
20H
What is instruction cycle with interrupts?
The instruction cycle is the basic operation cycle in a computer. This is what will take in data, process it and execute as required.
How program and data memory fetches can be overlapped in a Harvard architecture?
In Harvard architecture, the program memory space is distinct from data memory space. Such architecture requiring two connections. It can perform instruction fetch ( from program memory ) and data memory fetch simultaneously , by adopting a pipelined instruction execution approach, as shown below. A typical instruction execution consists of performing Fetch instruction, Decode instruction, Fetch operands, execution operation , store results. Then, by adopting a pipelined approach, which is possible in Harvard architecture, it is evident that the instruction throughput increases by overlapping. It is simple to imagine that in the above case, if all the above states are executed "one after the other" , the execution time of the instruction will be longer than when it is pipelined.
How program and data memory fetches can be overlapped in Harvard architecture?
In Harvard architecture, the program memory space is distinct from data memory space. Such architecture requiring two connections. It can perform instruction fetch ( from program memory ) and data memory fetch simultaneously , by adopting a pipelined instruction execution approach, as shown below. A typical instruction execution consists of performing Fetch instruction, Decode instruction, Fetch operands, execution operation , store results. Then, by adopting a pipelined approach, which is possible in Harvard architecture, it is evident that the instruction throughput increases by overlapping. It is simple to imagine that in the above case, if all the above states are executed "one after the other" , the execution time of the instruction will be longer than when it is pipelined.
What happens after an execution?
DEATH.
