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

Differentiate between adaptive and non-adaptive routing, Differentiate betw...

Differentiate between adaptive and non-adaptive routing. Adaptive routing defines the ability of a system, by which routes are characterised through their destination, to cha

What problem does the namespace feature solve, Multiple providers of librar...

Multiple providers of libraries may use common global identifiers causing a name collision when an application tries to link with two or more such libraries. The namespace feature

Java''s layout managers give over traditional windowing syste, Java uses la...

Java uses layout managers to lay out components in a consistent manner across all windowing platforms. As Java's layout managers aren't tied to absolute sizing and positioning, the

Explain the difference between fixed and standard effect, Question: (a)...

Question: (a) There are several camera angles that can be used to make a sequence more interesting for a video production project. Explain clearly, using diagrams where appro

What is the function of a tlb, What is the function of a TLB (translation...

What is the function of a TLB (translation look-aside buffer)? A small cache called the TLB is interporated into MMU, which having of the page table entries that correspondi

What is stack and register manipulation, Q. What is Stack and register mani...

Q. What is Stack and register manipulation? Stack and register manipulation: If we create stacks, stack instructions prove to be useful. LOAD IMMEDIATE is a good illustration

Explain block diagram for 4 bit parallel adder, What is parallel adder? Dra...

What is parallel adder? Draw and explain block diagram for 4 bit parallel adder. Ans: By using full adder circuit, any two bits can be added along with third input like a ca

Role of internet, What are the roles of Internet, Intranet and extranet in ...

What are the roles of Internet, Intranet and extranet in e-business? Role of Internet, Intranet and extranet into e-business: The given information activities are carried

Write a program that will solve a puzzle, You will write a program that wil...

You will write a program that will solve a version of the common newspaper puzzle \word search." In the puzzle you are given a grid lled with characters and a list of words to nd

Explain the microprocessor development system, Microprocessor development s...

Microprocessor development system Computer systems have undergone many changes recently. Machines that once filled large areas have been reduced to small desktop computer syste

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