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

How do you control instructions like branch, How do you control instruction...

How do you control instructions like branch, cause problems in a pipelined processor? Pipelined processor gives the best throughput for sequenced line instruction. In branch in

Give the syntax of if-else statement, Give the syntax of "if-else" and "sw...

Give the syntax of "if-else" and "switch" statements and explain. if else This is used to decide whether to do something at a special point, or to decide between two courses

Hardware design of a typical system, Motorola 68HC11 series is a family of ...

Motorola 68HC11 series is a family of micro controllers , each device contains slightly different  functional blocks , however they are all based around the same microprocessor nam

What is device drivers, A device driver is software interface that manages ...

A device driver is software interface that manages communication with and control of a particular I/O device or type of device. It is task of device driver to convert logical reque

What is roll area, What is roll area? A roll area having the program's...

What is roll area? A roll area having the program's runtime context.  In addition to the runtime stack and other structures, all local variables and any data known to the prog

Define dma, Define DMA. The transfer of data among a fast storage devic...

Define DMA. The transfer of data among a fast storage device such as magnetic disk and memory if often limited by the speed of the CPU. Removing the CPU from the path and letti

What is segment - assembler directives, What is SEGMENT - Assembler directi...

What is SEGMENT - Assembler directives SEGMENT:  This directive defines to assembler the start of a segment with name segment-name.  Segment name must be unique and follows the

Define object oriented modelling, Object oriented modelling Object ori...

Object oriented modelling Object oriented modelling is entirely a new way of thinking about queries. This methodology is all about visualizing the things by using models organ

State the term- $display and $write, State the term- $display and $write ...

State the term- $display and $write $display and $write two are the same except which $display always prints a newline character at the end of its execution.

What are escape sequences characters, What are escape sequences characters?...

What are escape sequences characters? List any six of them.  The characters which when used with output functions like printf( ),putc(),put() etc. helps in formatting the outpu

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