Multiple assign statements targeting the same wire, Computer Engineering

Assignment Help:

What logic is inferred when there are multiple assign statements targeting the same wire?

It's illegal to specify multiple assign statements to the same wire in a synthesizable code that will become  an  output  port  of  module.  Synthesis  tools  give  a  syntax  error  that  a  net  is  being driven by more than one source.

Illegal Code

Wire temp;

Assign temp = in1 & in2;

Assign temp = in3 & in4;

However, it is legal to drive a three-state wire by multiple assign statements.

Legal code

Wire temp;

Assign temp = enable1? (In1 & in2): 1'bz;

Assign temp = enable2? (In3 & in4): 1'bz

 


Related Discussions:- Multiple assign statements targeting the same wire

Performance and issues in pipelining-throughput, Performance and Issues in ...

Performance and Issues in Pipelining Throughput:  Throughput of a pipeline can be defined as the number of results that have been getting per unit time. It can be denoted as:

Define both fork and vfork, How and when race conditions happen in process ...

How and when race conditions happen in process control? How can it be avoided? b. Differentiate among following functions giving related syntax: (i) fork and vfork (ii) w

Define swapping, Define swapping.  A process needs to be in memory to b...

Define swapping.  A process needs to be in memory to be implemented. Though a process can be swapped temporarily out of memory to a backing store and then brought back into mem

Explain sequential sharing, Explain Sequential Sharing In this sharing ...

Explain Sequential Sharing In this sharing method, a file can be shared by just one program at a time, i.e. file accesses by P1 and P2 are spaced out over time. A lock field ca

How can you pass a struct by reference in e, How can you pass a struct by r...

How can you pass a struct by reference in e?   The question is phrased in a tricky way because passing by reference is the default and only possible way to pass structs in e. I

Indias parallel computers, Parallel Computers In India, the design and ...

Parallel Computers In India, the design and development of parallel computers in progress in the early 80?s. The Indian Government recognized the Centre for Development of Adva

Illustrate about the single inheritance, Illustrate about the single inheri...

Illustrate about the single inheritance During inheritance, superclass feature may by override by a subclass defining that feature with the same name. The overriding features (

Difference between shadow and override in programming, Overriding tell us o...

Overriding tell us only the methods, but shadowing tells us the entire element.

What are the basic features of supply chain management, What are the basic ...

What are the basic features of Supply Chain Management? Features of Supply Chain Management Supply Chain Management uses different methods to find out, affect and chang

What are benefits and advantages of linq, Benefits and benefits of LINQ are...

Benefits and benefits of LINQ are: 1. Makes it simpler to transform data into objects. 2. A common syntax for all data. 3. Strongly typed code. 4. Provider integration.

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