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

What is home banking, Home Banking: E-commerce is used in Home Banking ...

Home Banking: E-commerce is used in Home Banking as single call or single click. Online banking (Internet banking) is a term used for performing transactions, payments etc. ove

Differences b/w user level and kernel supported threads, What are the diffe...

What are the differences between user level threads and kernel supported threads? A thread, sometimes termed a lightweight process (LWP), is a fundamental unit of CPU utilizati

Explain about data segment, DATA SEGMENT  NUM1            DB      15h;...

DATA SEGMENT  NUM1            DB      15h;     First number   NUM2            DB      20h;     Second number  RESULT DB?  ; Put sum here  CARRY DB? ; Put any carry he

Explain about instruction cycle, Q. Explain about Instruction Cycle? Th...

Q. Explain about Instruction Cycle? The instruction cycle for this provided machine comprises four cycles. Presume a 2-bit instruction cycle code (ICC). The ICC can represent t

Explain macros and macro processors, System Software 1. Explain MASM? E...

System Software 1. Explain MASM? Explain its features. 2. What is the significance of Lexical analysis and Syntax analysis? 3. Explain macros and macro processors? Explai

What is the purpose of linq providers in linq, LINQ Providers are a set of ...

LINQ Providers are a set of classes that takes a LINQ query and dynamically produces a method that implements an equivalent query against an exact data source.

State the approaches to organizing stored program control, Determine the ap...

Determine the approaches to organizing stored program control There are 2 approaches to organizing stored program control: 1.  Centralized: In this control, all control equi

Show layout 84-key keyboards, Q. Show layout 84-key Keyboards? PC 83-ke...

Q. Show layout 84-key Keyboards? PC 83-key was the earliest keyboard provided by IBM with its first Personal Computers (PC). This had 83 keys. Afterwards IBM added one more key

Write about TSR, Write about TSR TPA also holds TSR (terminate and stay...

Write about TSR TPA also holds TSR (terminate and stay resident) programs which remain in memory in an active state until activated by a hot-key sequence or another event like

Write Your Message!

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