Cisc characteristics-microprocessor, Assembly Language

Assignment Help:

CISC Characteristics :

The design of an instruction  set for a computer  might take into consideration  not only machine language constraints,  but  also  the  requirements  imposed  on  the  use  of  high-level  programming  languages.  The translation from high-level to machine language programs is done by means of a compiler program. One cause for the trend to provide a complex instruction set is the desire to simplify the compilation and improve the overall computer performance.  The task of a compiler is to produce a sequence of machine instructions for each high-level language statement. The job is simplified if there are machine instructions that implement the statements directly. The important aim of CISC architecture is to attempt to provide a single machine instruction for each statement that is written in a high-level language .An Examples of CISC architectures are the Digital Equipment Corporation VAX computer and the IBM 370 computer.

The main characteristics of CISC architecture are:

1. A large number of instructions-usually from 100 to 250 instructions.

2. Some instructions that perform specialized tasks and are used infrequently.

3. A vast variety of addressing modes-typically from 5 to 20 different modes.

4. Variable-length instruction formats.

5. Instructions that manipulate operands in memory.

 


Related Discussions:- Cisc characteristics-microprocessor

Write an 8086 assembly program, Project Description: Write an 80x86 asse...

Project Description: Write an 80x86 assembly program that performs the following functions: Reads a set of integers from a file into an array. The data file name is to be

LC-3 Program, Write an Lc-3 assembly language program to read in a sequence...

Write an Lc-3 assembly language program to read in a sequence of single-digit positive integers from the keyboard(one integer per line) until the sentinel value of 0 is reached and

Login system, a pseudo-code to add username and password combination up to ...

a pseudo-code to add username and password combination up to a limit of 10

Signal descriptions of 8086-microprocessor, Signal descriptions of 8086 : ...

Signal descriptions of 8086 : described below are common for the maximum andminimum mode bothdata lines AD15 -AD0: These are the time multiplexed andmemory I/O address. Addre

Program to convert decimal to binary number, Program is written but has err...

Program is written but has errors returning values from the procedure.

Opcode-microprocessor, Opcode : The opcode generally appear in the firs...

Opcode : The opcode generally appear in the first byte.but in a few instructions, a register objective is in the first byte and few other instructions may have their 3-bits of

8279 keyword /display controller-microprocessor, 8279 Keyword /Display Cont...

8279 Keyword /Display Controller : Figure shows the structure of 8279 and its interface to the bus. Addressing is according to the table given below. CS        RD

Arm assembly language code, You will need to upload your main.c and factori...

You will need to upload your main.c and factorial.s files and a .jpg photo of the output on your board using the Vista assignment upload features.  It must be submitted by the dead

Write a assembly language subroutine, Write a M68000 assembly language subr...

Write a M68000 assembly language subroutine MULSUM that takes an array named A containing n bytes of positive numbers, and fills two arrays, array B containing n

General bus operation-microprocessor, General Bus Operation The 8086 ha...

General Bus Operation The 8086 has a joined data and address bus commonly referred to as a time multiplexed address and data bus. The major reason behind  multiplexing address

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