Verilog Programming part 21 ppt
Verilog Programming part 21 ppt
... can be given names.
• Local variables can be declared for the named block.
• Named blocks are a part of the design hierarchy. Variables in a named block
can be accessed by using hierarchical ... sequential block with delay in Example 7-26
and convert it to a
p
arallel block. The converted Verilog code is shown in Example 7-27. The result
of simulation remains the same except that al...
Verilog Programming part 8 ppt
... connections. However, a warning is typically issued that the
widths do not match.
Unconnected ports
Verilog allows ports to remain unconnected. For example, certain output ports
might be simply for ... There are rules governing port connections when modules are
instantiated within other modules. The Verilog simulator complains if any port
connection rules are violated. These rules ar...
Verilog Programming part 1 ppt
... Team LiB ]
1.5 Popularity of Verilog HDL
Verilog HDL has evolved as a standard hardware description language. Verilog
HDL offers many useful features
• Verilog HDL is a general-purpose ... easy to use. It is similar in syntax to the C programming
language. Designers with C programming experience will find it easy to
learn Verilog HDL.
• Verilog HDL allows different lev...
Verilog Programming part 3 pptx
... reset); // Instantiate D_FF. Call it dff0.
not n1(d, q); // not gate is a Verilog primitive. Explained later.
endmodule
In Verilog, it is illegal to nest modules. One module definition cannot ... module provides a template from which you can create actual objects. When a
module is invoked, Verilog creates a unique object from the template. Each object
has its own name, variables,...
Verilog Programming part 5 ppt
...
Variable Vector Part Select
Another ability provided in Verilog HDl is to have variable part selects of a vector.
This allows part selects to be put in for loops to select various parts of the ... vector.
There are two special part- select operators:
[<starting_bit>+:width] - part- select increments from starting bit
[<starting_bit>-:width] - part- select decremen...
Verilog Programming part 25 ppt
... module.
Tasks are used for common Verilog code that contains delays, timing, event
constructs, or multiple output arguments. Functions are used when common
Verilog code is purely combinational, ...
8.1 Differences between Tasks and Functions
Tasks and functions serve different purposes in Verilog. We discuss tasks and
functions in greater detail in the following sections. However,...
Verilog Programming part 20 ppt
... four types of looping statements in Verilog: while, for, repeat, and
forever. The syntax of these loops is very similar to the syntax of loops in the C
programming language. All looping statements ...
end
7.6.2 For Loop
The keyword for is used to specify this loop. The for loop contains three parts:
• An initial condition
• A check to see if the terminating condition is true
• A pro...
Microsoft WSH and VBScript Programming for the Absolute Beginner Part 21 ppt
... take a look at the following example:
Dim intCounter, strCountList
Microsoft WSH and VBScript Programming for the Absolute Beginner, Second Edition
Figure 6.10
Using a
Do Until
loop to provide
the ... intNoGuesses & “ guesses.”, ,cGreetingMsg
strOkToEnd = “yes”
End If
Microsoft WSH and VBScript Programming for the Absolute Beginner, Second Edition
186
These steps are
1. Add the stan...
Tài liệu Mastering Revit Architecture 2008_ Part 21 pptx
... object immediately
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CHAPTER 21
TROUBLESHOOTING AND OPTIMIZING ... roles are filled.
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CHAPTER 21
TROUBLESHOOTIN...