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Micro-operation is the functional or atomic operation of a processor. They are low-level instruction used in some designs to implement complex machine instruction. They perform operations on data store in one or more registers.
Akindele Ayoola
Microoperations are fundamental operations that can be performed by a digital computer's control unit at a very basic level, usually involving simple data manipulation or transfer tasks. These operations form the building blocks for more complex instructions and tasks executed by a computer's central processing unit (CPU). They are essential for controlling the flow of data and instructions within a computer's architecture.
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∙ 11y agodefine micro operation
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What is logical operations?
A logic microoperation specify binary operation for a string of bits stored in registers.These operation consider each bit in the registers seperately and treat it as a binary variable. Eg:-F--A(+)B If the contents of register A is 1010 and that of register B is 1100 than the information is transfer to register F is 0110
what are the applications of logic micro operation?
A logic microoperation specify binary operation for a string of bits stored in registers.These operation consider each bit in the registers seperately and treat it as a binary variable. Eg:-F--A(+)B If the contents of register A is 1010 and that of register B is 1100 than the information is transfer to register F is 0110
What is address sequencing in computer organization?
Microinstructions are stored in control memory in groups, with each group specifying routine. Each computer instruction has its own microprogram routine in control memory to generate the microoperations that execute the instruction. The hardware that controls the address sequencing of the control memory must be capable of sequencing the microinstructions within a routine and be able to branch from one routine to another. To appreciate the address sequencing in a microprogram control unit, let us enumerate the steps that the control must undergo during the execution of a single computer instruction. An initial address is loaded into the control address register when power is turned on in the computer. This address is usually the address of the first microinstruction that activates the instruction fetch routine. The fetch routine may be sequenced by incrementing the control address register through the rest of its microinstructions. At the end of the fetch routine, the instruction is in the instruction register of the computer. The control memory next must go through the routine that determines the effective address of the operand. A machine instruction may have bits that specify various addressing modes, such as indirect address and index registers. The effective address computation routine in control memory can be reached through a branch microinstruction, which is conditioned on the status of the mode bits of the instruction. When the effective address computation routine is completed, the address of the operand is available in the memory address register. The next step is to generate the microoperations that execute the instruction fetched from memory. The microoperation steps to be generated in processor register depend on the operation code part of the instruction. Each instruction has its own microprogram routine stored in a given location of control memory. The transformation from the instruction code bits to an address in control memory where the routine is located is referred to as a mapping process. A mapping procedure is a rule that transforms the instruction code into a control memory address. Once the required routine is reached, the microinstructions that execute the instruction may be sequenced by incrementing the control address register, but sometimes the sequence of microoperations will depend on values of certain status bits in processor registers. Micro programs that employ subroutines will require an external register for storing the return address. Return addresses cannot be stored in ROM because the unit has no writing capability. When the execution of the instruction is completed, control must return to the fetch routine. This is accomplished by executing an unconditional branch microinstruction to the first address of the fetch routine. In summary, the address sequencing capabilities required in control memory are: 1. Incrementing of the control address register. 2. Unconditional branch or conditional branch, depending on statues bit conditions. 3. A mapping process from the bits of the instruction to an address for control memory. 4. A facility for subroutine call and return.
