Nanoprogramming - computer architecture, Computer Engineering

Nanoprogramming:

  •  Second compromise: nanoprogramming
  •  it use a 2-level control storage organization
  •  Top level is a vertical format memory
  •  Output of the top level memory process the address register of the bottom (nano- level) memory
  •  Nanomemory uses the horizontal format
  •  Generate the real control signal outputs
  •  The benefit to this method is significant saving in control memory size (bits)
  •  Disadvantage is more difficulty and slower operation (doing 2 memory accesses for each microinstruction)

Nano programmed machine

1589_Nanoprogramming.png

 

  • Instance : Assume that a system is being designed with 200 control points and 2048 microinstructions

o   Suppose that only 256 different combinations of control points are ever used

o   A single-level control memory would need 2048x200=409,600 storage bits

  •   A nano programmed system would utilize
  •   Microstore of size 2048x8=16k
  •   Nanostore of size 256x200=51200
  •   Total size = 67,584 storage bits
  •   Nano programming has been used in many CISC microprocessors

 

Posted Date: 10/13/2012 4:36:44 AM | Location : United States







Related Discussions:- Nanoprogramming - computer architecture, Assignment Help, Ask Question on Nanoprogramming - computer architecture, Get Answer, Expert's Help, Nanoprogramming - computer architecture Discussions

Write discussion on Nanoprogramming - computer architecture
Your posts are moderated
Related Questions
difference between pure and impute inter preter

Q. Design Odd-Even Transposition Algorithm? Algorithm: Odd-Even Transposition for I=1 to N     {            If (I%2 != 0) //i.e. Odd phase            {

Vector Processing with Pipelining: Since in vector processing, vector instructions perform the similar computation on dissimilar data operands repeatedly, vector processing is most

Q. Illustrate the working of FLIP-FLOPS? A flip-flop is a binary cell that stores 1-bit of information. It itself is a sequential circuit. We know that flip-flop can change its

Subtraction of 0011.1001 - 0001.1110 using 2's complement method Ans. Firstly 1's complement of 0001.1110 is 1110.0001 and 2's complement is 1110.0010. If a last carry

Explanation The values of global variables can be used and changed all over the project within all scripts and libraries. However it is highly recommended to remain the number o

Before we take a detailed look about the Motorola 68HC11 series of micro controllers it is useful to define what is meant by a micro controller. As the name suggests a micro contro

Functions in first-order logic sentences - artificial intelligence: Functions may be thought of as special predicates, where we think of all but 1 of the arguments as input and

Data, information and knowledge - Information System The nature of information can most easily be defined in the context of its relationship to data and knowledge. Bohn (1994)