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

Cgi programming, For this assignment you should construct a comprehensive w...

For this assignment you should construct a comprehensive web site for Dangar Winery of Puddledock Road Armidale, makers of fine table wines and ports since 1983. Chief winemaker, A

Explain 32 to 1 multiplexer tree, Why is Multiplexer Tree needed? Draw ...

Why is Multiplexer Tree needed? Draw the block diagram of a 32:1 Multiplexer Tree and explain how input is directed to the output in this system. Ans. One of the possible

Determine the decimal equivalent of octal number, The number 140 in octal i...

The number 140 in octal is equivalent to decimal number ? Ans. (140) 8 = (96) 10 As 1 x 8 2 + 4 x 8 + 0x 1 = 64 + 32 = 96

What is the advantage of caching in a web browser, What is the advantage of...

What is the advantage of caching in a web browser? Like other application browsers utilize a cache to enhance document access. The browser places a copy of all items it retriev

Major task of a computer to carry out instruction execution, The major task...

The major task of a computer is to carry out instruction execution. The key questions that can be asked in this respect are: (a) how are the instructions provided to computer? And

How does cpu know that an interrupt has taken place, How does CPU know that...

How does CPU know that an interrupt has taken place? There needs to be a line or a register or status word in CPU which can be increased on occurrence of interrupt situation.

Information technology or information system, Information Technology or Inf...

Information Technology or Information System Before going further we need to clarify what we mean by the term information system. It is easy to confuse terminology as many tex

Explain scripts and libraries introduction, Scripts A script within Rati...

Scripts A script within Rational Robot is a file that haves a sequence of SQABasic code. The extension of the file is always ".REC". Typically the script have an automated testc

Simple application to model a garden, Requirement Specification for a Simpl...

Requirement Specification for a Simple Application to Model a Garden The following is a requirements statement for a simple application to model the design of a garden. The requ

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