Illustrate the accumulator architecture, Computer Engineering

Assignment Help:

Accumulator Architecture: An accumulator is anespecially designated register which supplies one instruction operand and receives result. Instructions in such machines are usually one-address instructions. The most common early architectures were DEC PDP-8, IBM 7090 etc.

On an Accumulator machine 'C = A + B'can be implemented as:

        LOAD A        // Load memory location A in accumulator

        ADD B          // Add memory location B to accumulator

        STORE C     // Store accumulator value in memory location C

Accumulator Architecture: Pros and Cons

  • Implicit use of accumulator saves instruction bits
  • Result is ready for immediate reuse however has to be saved in memory if subsequent computation doesn't use it right away.
  • More memory accesses needed than stack. Consider a program to do expression:

        A = B * C + D * E.

2162_Illustrate the Accumulator Architecture.png


Related Discussions:- Illustrate the accumulator architecture

No class can derive, Make a console application. Add class 'Account' having...

Make a console application. Add class 'Account' having variables as num (integer) name (String), bal (double), ac_code (byte). Describe four different constructors to initialize th

Explain conditions under which a deadlock situation arise, What are conditi...

What are conditions under which a deadlock situation may arise? A deadlock situation can arise if the following four conditions hold concurrently in a system:  a. Mutual exc

General registers in a processor, In this segment, we will give very brief ...

In this segment, we will give very brief details of registers of a RISC system known as MIPS. MIPS is a register-to-register or load/store architecture and employs three address

Explain the basic syntactic constructs through reductions, Recognition of b...

Recognition of basic syntactic constructs through reductions, this task is performed by? By Syntax analysis, recognition of fundamental syntactic constructs through reductions

Explain direct memory access, Explain Direct Memory Access. A modest en...

Explain Direct Memory Access. A modest enhances in hardware enables an IO device to transfer a block of information to or from memory without CPU intervention. This task needs

What is a reference string, What is a reference string? An algorithm is...

What is a reference string? An algorithm is evaluated by running it on a exacting string of memory references and computing the number of page faults. The string of memory refe

Explain post office protocol, Explain POP (Post Office Protocol). The P...

Explain POP (Post Office Protocol). The Post Office Protocol gives remote access to an electronic mail box. The protocol permits a user's mailbox to reside on a computer which

Writing down your own interrupt service routines, Q. Writing down your own ...

Q. Writing down your own Interrupt Service Routines? Here are a few rules which should be kept in mind while writing down your own Interrupt Service Routines: 1.  Use Int 21

Describe the functions of an operating system, Question: (a) Software ...

Question: (a) Software may be categorized into System software and Application software. Differentiate between these two categories, using examples to support your answer.

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