Explain about instruction register and flags, Computer Engineering

Assignment Help:

Q. Explain about Instruction Register and Flags?

The Instruction Register: It comprises the operation code (opcode) and addressing mode bits of the instruction. It assists in determining the numerous cycles to be performed and hence determines related micro-operations that are required to be performed.

Flags: Flags are used by CU for determining the status of CPU and the results of a previous ALU operation. For illustration a zero flag if set conveys to control unit that for instruction ISZ (skip subsequent instruction if zero flag is set) the next instruction has to be skipped.


Related Discussions:- Explain about instruction register and flags

What are assembly attributes, Attributes are declarative tags in code that ...

Attributes are declarative tags in code that put in additional metadata into an assembly.

Explain the configuration of a step-by-step switching system, With neat dia...

With neat diagrams explains the configuration of a step-by-step switching system. The schematic diagram for an exchange is specified in figure. Each subscriber is associated to

Big – endian and little- endian representations, Explain Big - Endian and L...

Explain Big - Endian and Little- Endian representations Ans: The Big- endian is used where lower byte addresses are used for the more significant bytes (leftmost bytes) of the

Association and classes betwnn student and university, Association and clas...

Association and classes betwnn student and university Association and classes are alike in the sense that classes describe objects, and association describe links. Figure shows

What are the end-to-end layers of osi structure, What are the end-to-end la...

What are the end-to-end layers of OSI structure? The layers 4 to 7 of ISO-OSI reference model communicate along with peer entities into the end systems. Now here is no communi

Explain about interrupt procedure, Q. Explain about Interrupt Procedure? ...

Q. Explain about Interrupt Procedure? The interrupt procedure uses request header to conclude the function requested by DOS. It also performs all functions for device driver. T

Static and dynamic interconnection network, Static and Dynamic Interconnect...

Static and Dynamic Interconnection Network In a static network the connection among input and output nodes is permanent and cannot be changed. Static interconnection network ca

VLSI implementation of control unit, Q. VLSI Implementation of Control Unit...

Q. VLSI Implementation of Control Unit? A main potential advantage of RISC is VLSI implementation of microprocessor. VLSI Technology has decreased the delays of transfer of inf

What is parallel sections construct, What is Parallel Sections Construct? ...

What is Parallel Sections Construct? The parallel sections construct is a shortcut for specifying a parallel construct comprising one sections construct however no other statem

What is instruction cycle, What is Instruction Cycle The simplest model...

What is Instruction Cycle The simplest model of instruction processing can be of two steps. The CPU reads /fetches instructions (codes) from memory one at a time and executes i

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd