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

Define device interface, Define device interface. The buffer registers ...

Define device interface. The buffer registers DATAIN and DATAOUT and the status flags SIN and SOUT are part of circuitry commonly called as a device interface.

Explain auto increment and auto decrement mode, Explain Auto increment and ...

Explain Auto increment and Auto decrement mode  The register is incremented or decremented after (or before) its value is used to access memory.  The address stored in the regi

Displays a message when an applet starts up, Write an applet that sets the ...

Write an applet that sets the background colour to cyan and foreground colour to red and displays a message that illustrates the order in which various applet methods are called wh

Explain operation of time multiplexed space switching, With a neat diagram ...

With a neat diagram explain operation of time multiplexed space switching. Time division switches, an inlet or an outlet corresponded to a particular subscriber line with one s

Explain SR latch using nor gates, Q. Explain SR Latch using NOR gates? ...

Q. Explain SR Latch using NOR gates? Let's inspect the latch more closely.   i. Suppose initially 1 is applied to S leaving R to 0 at this instance. The instant S=1 output o

What is delayed branching, What is delayed branching? A method called d...

What is delayed branching? A method called delayed branching can minimize the penalty incurred as a result of conditional branch instructions. The idea is easy. The instruction

E-recruitment system, This project is aimed at developing a web-based and c...

This project is aimed at developing a web-based and central recruitment Process system. this web site is for Fresher candidates who graduated. Some features of this system will be

What is hyper-threading, Hyper-threading officially known as Hyper-threadin...

Hyper-threading officially known as Hyper-threading Technology (HTT) is Intel's trademark for their functioning of simultaneous multithreading technology on Pentium 4 micro-archite

Explain about the postpurchase interaction briefly, Explain about the postp...

Explain about the postpurchase interaction briefly. Postpurchase Interaction: Customer support and service: The considerations at such can be explained by the followin

Explain about the term e-cash, Explain about the term E-Cash. E-cash is...

Explain about the term E-Cash. E-cash is cash demonstrated by two models. E-cash has one is on-line form of e-cash, that is introduced by DigiCash that permits for the completi

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