Explain about data registers, Computer Engineering

Assignment Help:

Q. Explain about data registers?

The data registers are used just for storing intermediate results or data and not for operand address calculation.

Some dedicated address registers are:

Segment Pointer :  Employed to point out a segment of memory.

Index Register :  These are used for index addressing scheme.

Stack Pointer: Points to top of stack when programmer visible stack addressing is used.

One of fundamental issues with register design is number of general-purpose registers or data and address registers to be provided in a microprocessor. Number of registers also affects instruction design as number of registers concludes the number of bits required in an instruction to specify a register reference. In common it has been found that optimum number of registers in a CPU is in range 16 to 32. In case registers fall below range then more memory reference per instruction on an average will be required as some of intermediate results then have to be stored in memory. Instead if the number of registers goes above 32 then there is no appreciable reduction in memory references. Though in a number of computers hundreds of registers are used. These systems have special features. These are known as Reduced Instruction Set Computers (RISC) and they exhibit this property.


Related Discussions:- Explain about data registers

For which class address 192.5.48.3 belogs, Address 192.5.48.3 belongs to? ...

Address 192.5.48.3 belongs to? Address 192.5.48.3 belongs to class C.

Design a 4 to 1 multiplexer, Design a 4 to 1 Multiplexer by using the three...

Design a 4 to 1 Multiplexer by using the three variable function given by F(A, B, C) = ∑ m(1,3,5,6) Ans. The given function F(A,B,C) = ∑ m(1,3,5,6) can be implemented along wit

DBMS, Difference between Paperbase and computer base system?

Difference between Paperbase and computer base system?

Describe the properties of attributes and operations, Describe the properti...

Describe the properties of Attributesand operations Attributes are named slots for data values that belong to the class. Previously we have studied in MCS-024, different o

Explain i/o buffer and advantage of buffering, What is an I/O buffer? What ...

What is an I/O buffer? What is the advantage of buffering? Is buffering always effective? Justify your answer with help of an example.   One type of I/O requirement arises from

The number of control lines for a 8 – to – 1 multiplexer, What is the numbe...

What is the number of control lines for a 8 - to - 1 multiplexer ? Ans. There are 3 control lines, for an 8 to 1 Multiplexer. The control signals are utilized to steer any one

Process of minimax algorithm, Process of Minimax algorithm: Our aim is...

Process of Minimax algorithm: Our aim is just to write the best of best score on the top branches of the tree that player one can guarantee to score if he chooses that move.

What is the difference between = = = and = =, What is the difference betwee...

What is the difference between = = = and = = ? output of "==" can be 1, 0 or X. output of "===" can only be 0 or 1. When you are comparing 2 nos using "==" and if one/bo

Can we change the color of the worksheet tabs in my workbook, In a word,you...

In a word,you can't. It would certainly be helpful to be able to color-code your worksheet tabs. For some reason, Microsoft hasn't executed this feature, which has been available i

The current image in gimp, How do we merge an image from a file to the curr...

How do we merge an image from a file to the current image in GIMP? Ans) Use "File then Open as Layers" menu command or just take the file to a window and drop it there. The file w

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