How can arithmetic processor be associated to the CPU, Computer Engineering

Assignment Help:

Q. How can this arithmetic processor be associated to the CPU? 

Two mechanisms are used for connecting arithmetic processor to CPU.  

If an arithmetic processor is treated as one of the Input / Output or peripheral units then it's termed as a peripheral processor. CPU transmitsinstructions and data to peripheral processor that performs the needed operations on data and communicates the results back to CPU. A peripheral processor has various registers to communicate with the CPU. These registers can be addressed by CPU as I/O register addresses. Peripheral and CPU processors are generally quite independent and communicate with each other by exchange of information using data transfer instructions. Data transfer instructions should be specific instructions in CPU. This kind of connection is known as loosely coupled.

Instead if the arithmetic processor has a register and instruction set that can be considered an extension of CPU registers and instruction set then it is known as a tightly coupled processor. Here CPU reserves a special subset of code for arithmetic processor. In such a system the instructions meant for arithmetic processor are fetched by CPU and decoded mutually by CPU and arithmetic processor and finally executed by arithmetic processor. So these processors can be considered a logical extension of CPU. These kind of attached arithmetic processors are called as co-processors.  

The concept of co-processor existed in 8086 machine until Intel 486 machines where co-processor was separate. But Pentium at present doesn't have a separate co-processor. In the same way peripheral processors aren't found as arithmetic processors in general. Though many chips are used for specialized I/O architecture.


Related Discussions:- How can arithmetic processor be associated to the CPU

Describe ergonomic keyboards, Q. Describe Ergonomic Keyboards? Ergonomi...

Q. Describe Ergonomic Keyboards? Ergonomics is the study of environment, conditions as well as efficiency of workers. Ergonomics proposes that keyboard wasn't designed with hum

What are parallel algorithms, What are Parallel Algorithms? The central...

What are Parallel Algorithms? The central assumption of the RAM model does not hold for some newer computers that can implement operations concurrently, i.e., in parallel algor

What is mother board, What is mother board? Mother Board is a main syst...

What is mother board? Mother Board is a main system printed circuit board which having the processor. It will occupy an unacceptably large amount of space on the board.

What is meant by questionnaires, What is meant by Questionnaires This ...

What is meant by Questionnaires This includes sending out questionnaires to the work force or/and to customers to find out their views of existing system and to find out how.

Concept of temporal parallelism, Concept of Temporal Parallelism In ord...

Concept of Temporal Parallelism In order to describe what is meant by parallelism inherent in the answer of a problem, let us talk about an example of submission of electricity

Difference between global and local variables, Global and Local Variables ...

Global and Local Variables Global variables: The features are as pursue Declared outside of all functions or before main. These can be used in all the functions in the progra

Explain the relationship b/w translated & load time address, Explain the re...

Explain the relationship amongst Translated address and Load time address. Translated address: Address assigned through the translator Load time address: Address ass

Write-allocate and no-write-allocate policy in a cache, (a) How does a da...

(a) How does a data cache take advantage of spatial locality? Give an suitable example. (b) What are the basic differences between a write-allocate and no-write-allocate po

Resolution method, Resolution Method: For a minor miracle occurred in ...

Resolution Method: For a minor miracle occurred in 1965 where Alan Robinson published his resolution method as uses a method to generalised version of the resolution rule of i

Determine about the verilog task, Determine about the Verilog Task - Ta...

Determine about the Verilog Task - Tasks are capable of enabling a function as well as enabling other versions of a Task. - Tasks also run with a zero simulation however the

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