1076_ina.html

basic exemple. Do an ADD of two 4 bits numbers

<p>described <a href="./1076_9.HTM#9.3">9.3</a><br>syntax <a href="./1076_9.HTM#9.3">9.3</a><br>usage <a href="./1076_9.HTM#9.3">9.3</a><br>where used <a href="./1076_1.HTM#1.1.3">1.1.3</a>, <a href="./1076_9.HTM#9">9</a>
</ul>
<p>Concurrent procedure call statements, see also Procedure call statements.<br>Concurrent signal assignment statements <a href="./1076_8.HTM#8.4">8.4</a>
<ul>
<p>containing delay mechanisms <a href="./1076_9.HTM#9.5">9.5</a><br>described <a href="./1076_9.HTM#9.5">9.5</a><br>elaboration of <a href="./1076_12.HTM#12.4.4">12.4.4</a><br>execution of <a href="./1076_9.HTM#9.5">9.5</a><br>syntax <a href="./1076_9.HTM#9.5">9.5</a><br>where used <a href="./1076_9.HTM#9">9</a>
</ul>
</ul>
<p>Concurrent signal assignment statements, see also Conditional<br> signal assignments, Selected signal assignments, Signal assignment<br> statements.<br>Concurrent statements
<ul>
<p>described <a href="./1076_9.HTM#9">9</a><br>elaboration of <a href="./1076_12.HTM#12.4">12.4</a>, <a href="./1076_12.HTM#12.4.4">12.4.4</a>, <a href="./1076_12.HTM#12.5">12.5</a><br>syntax <a href="./1076_9.HTM#9">9</a><br>where used <a href="./1076_1.HTM#1.1">1.1</a>, <a href="./1076_1.HTM#1.2.2">1.2.2</a>, <a href="./1076_9.HTM#9.1">9.1</a>, <a href="./1076_9.HTM#9.7">9.7</a>
</ul>
<p>Condition clauses
<ul>
<p>described <a href="./1076_8.HTM#8.1">8.1</a><br>syntax <a href="./1076_8.HTM#8.1">8.1</a><br>where used <a href="./1076_8.HTM#8.1">8.1</a>
</ul>
<p>Conditional signal assignments
<ul>
<p>described <a href="./1076_9.HTM#9.5.1">9.5.1</a><br>syntax <a href="./1076_9.HTM#9.5.1">9.5.1</a><br>where used <a href="./1076_9.HTM#9.5">9.5</a>
</ul>
<p>Conditions
<ul>
<p>syntax <a href="./1076_8.HTM#8.1">8.1</a><br>where used <a href="./1076_8.HTM#8.1">8.1</a>, <a href="./1076_8.HTM#8.2">8.2</a>, <a href="./1076_8.HTM#8.7">8.7</a>, <a href="./1076_8.HTM#8.9">8.9</a>, <a href="./1076_8.HTM#8.11">8.11</a>, <a href="./1076_9.HTM#9.5.1">9.5.1</a>, <a href="./1076_9.HTM#9.7">9.7</a>
</ul>
<p>Configuration declarations
<ul>
<p>anonymous <a href="./1076_12.HTM#12.1">12.1</a><br>as declarative regions <a href="./1076_10.HTM#10.1">10.1</a><br>described <a href="./1076_1.HTM#1.3">1.3</a><br>scope of <a href="./1076_10.HTM#10.4">10.4</a><br>syntax <a href="./1076_1.HTM#1.3">1.3</a><br>usage
<ul>
<p>to control elaboration of a block statement <a href="./1076_12.HTM#12.4.1">12.4.1</a><br>to define components <a href="./1076_9.HTM#9.6">9.6</a>
</ul>
<p>visibility of <a href="./1076_1.HTM#1.1.2">1.1.2</a><br>where used <a href="./1076_11.HTM#11.1">11.1</a>
</ul>
<p>Configuration items
<ul>
<p>implicit <a href="./1076_1.HTM#1.3.1">1.3.1</a><br>syntax <a href="./1076_1.HTM#1.3.1">1.3.1</a><br>where used <a href="./1076_1.HTM#1.3.1">1.3.1</a>
</ul>
<p>Configuration specifications
</ul>
<p>default entity aspect of <a href="./1076_5.HTM#5.2.2">5.2.2</a><br>described <a href="./1076_5.HTM#5.2">5.2</a><br>elaboration of <a href="./1076_12.HTM#12.3.2.2">12.3.2.2</a><br>implicit <a href="./1076_12.HTM#12.1">12.1</a><br>restrictions
<ul>
<p>for binding indications <a href="./1076_5.HTM#5.2.1">5.2.1</a><br>for others and all <a href="./1076_5.HTM#5.2.1">5.2.1</a>
</ul>
<p>syntax <a href="./1076_5.HTM#5.2.1">5.2.1</a><br>usage
<ul>
<p>to bind component instances to design entities <a href="./1076_1.HTM#1.3">1.3</a>, <a href="./1076_4.HTM#4.5">4.5</a><br>to define copies of blocks <a href="./1076_9.HTM#9.6">9.6</a>
</ul>
<p>where used <a href="./1076_1.HTM#1.2.1">1.2.1</a>
</ul>
<p>Configurations
<ul>
<p>described <a href="./1076_1.HTM#1">1</a><br>where used <a href="./1076_9.HTM#9.6">9.6</a>
</ul>
<p>Constant declarations
<ul>
<p>described <a href="./1076_4.HTM#4.3.1.1">4.3.1.1</a><br>syntax <a href="./1076_4.HTM#4.3.1.1">4.3.1.1</a><br>where used <a href="./1076_1.HTM#1.1.2">1.1.2</a>, <a href="./1076_1.HTM#1.2.1">1.2.1</a>, <a href="./1076_2.HTM#2.2">2.2</a>, <a href="./1076_2.HTM#2.5">2.5</a>, <a href="./1076_2.HTM#2.6">2.6</a>, <a href="./1076_4.HTM#4.3.1.1">4.3.1.1</a>, <a href="./1076_9.HTM#9.2">9.2</a>
</ul>
<p>Constants
<ul>
<p>deferred <a href="./1076_2.HTM#2.6">2.6</a>, <a href="./1076_4.HTM#4.3.1.1">4.3.1.1</a><br>explicitly declared <a href="./1076_4.HTM#4.3.1.1">4.3.1.1</a><br>generic <a href="./1076_1.HTM#1.1.1.1">1.1.1.1</a><br>in resolution functions <a href="./1076_2.HTM#2.4">2.4</a><br>index ranges of <a href="./1076_3.HTM#3.2.1.1">3.2.1.1</a><br>initial values of <a href="./1076_12.HTM#12.3.1.4">12.3.1.4</a><br>usage
<ul>
<p>as generate parameters <a href="./1076_9.HTM#9.7">9.7</a><br>as globally static primaries <a href="./1076_7.HTM#7.4.2">7.4.2</a><br>as subprogram parameters <a href="./1076_2.HTM#2.1.1.1">2.1.1.1</a>
</ul>
<p>values of <a href="./1076_4.HTM#4.3.1.1">4.3.1.1</a>
</ul>
<p>Context clauses
<ul>
<p>described <a href="./1076_11.HTM#11.3">11.3</a><br>implicit <a href="./1076_14.HTM#14.2">14.2</a><br>syntax <a href="./1076_11.HTM#11.3">11.3</a><br>where used <a href="./1076_11.HTM#11.1">11.1</a>
</ul>
<p>Context items
<ul>
<p>syntax <a href="./1076_11.HTM#11.3">11.3</a><br>where used <a href="./1076_11.HTM#11.3">11.3</a>
</ul>
<p>Conversion functions
<ul>
<p>restrictions in signal associations <a href="./1076_4.HTM#4.3.2.2">4.3.2.2</a>
</ul>
<p>Deallocation <a href="./1076_3.HTM#3.3.2">3.3.2</a><br>Declarations
<ul>
<p>elaboration of <a href="./1076_12.HTM#12">12</a>, <a href="./1076_12.HTM#12.3.1">12.3.1</a><br>occurring immediately within declarative regions <a href="./1076_10.HTM#10.1">10.1</a><br>of items in a design entity <a href="./1076_1.HTM#1">1</a><br>overloaded <a href="./1076_10.HTM#10.3">10.3</a>, <a href="./1076_10.HTM#10.5">10.5</a><br>scope of <a href="./1076_10.HTM#10.3">10.3</a><br>visibility
<ul>
<p>by selection <a href="./1076_10.HTM#10.3">10.3</a><br>direct <code><a href="./1076_10.HTM#10.3">10.3</a><br></code>hidden <code><a href="./1076_10.HTM#10.3">10.3</a><br></code>potential <a href="./1076_10.HTM#10.4">10.4</a>
</ul>
</ul>
<p>Declarative parts, elaboration of <a href="./1076_12.HTM#12.3">12.3</a><br>Declarative regions
<ul>
<p>described <a href="./1076_10.HTM#10.1">10.1</a>
</ul>
<p>Deferred bindings <a href="./1076_1.HTM#1.3">1.3</a><br>Deferred constants <a href="./1076_2.HTM#2.6">2.6</a>
<ul>
<p>defined <a href="./1076_4.HTM#4.3.1.1">4.3.1.1</a>
</ul>
<p>Delay mechanisms
<ul>
<p>described <a href="./1076_8.HTM#8.4">8.4</a><br>syntax <a href="./1076_8.HTM#8.4">8.4</a><br>where used <a href="./1076_8.HTM#8.4">8.4</a>, <a href="./1076_9.HTM#9.5">9.5</a>
</ul>
<p>DELAYED attribute <a href="./1076_2.HTM#2.2">2.2</a>, <a href="./1076_4.HTM#4.3">4.3</a>, <a href="./1076_4.HTM#4.3.2">4.3.2</a>, <a href="./1076_14.HTM#S'DELAYED">14.1</a><br>Delays <a href="./1076_3.HTM#3.1.3.1">3.1.3.1</a>
<ul>
<p>inertial <a href="./1076_8.HTM#8.4">8.4</a><br>transport <a href="./1076_8.HTM#8.4">8.4</a>
</ul>
<p>Delimiters
<ul>
<p>defined <a href="./1076_13.HTM#13.2">13.2</a><br>names of <a href="./1076_13.HTM#13.2">13.2</a>
</ul>
<p>Design entities
<ul>
<p>bindings to component instances <a href="./1076_1.HTM#1.2.2">1.2.2</a>, <a href="./1076_5.HTM#5.2.1">5.2.1</a>, <a href="./1076_5.HTM#5.2.1.1">5.2.1.1</a>, <a href="./1076_9.HTM#9.6.1">9.6.1</a>, <a href="./1076_9.HTM#9.6.2">9.6.2</a><br>bodies of <a href="./1076_1.HTM#1.2">1.2</a><br>declarative items <a href="./1076_1.HTM#1.1">1.1</a>, <a href="./1076_5.HTM#5">5</a><br>defining external blocks <a href="./1076_1.HTM#1.3.1">1.3.1</a><br>defining subcomponents of <a href="./1076_9.HTM#9.6">9.6</a><br>described <a href="./1076_1.HTM#1">1</a><br>interfaces of <a href="./1076_1.HTM#1.1">1.1</a>, <a href="./1076_4.HTM#4.5">4.5</a><br>library requirements <a href="./1076_1.HTM#1.1.3">1.1.3</a><br>ports <a href="./1076_1.HTM#1.1.1">1.1.1</a><br>visibility <a href="./1076_1.HTM#1.1.2">1.1.2</a>
</ul>
<p>Design files
<ul>
<p>syntax <a href="./1076_11.HTM#11.1">11.1</a>
</ul>
<p>Design hierarchies
<ul>
<p>defined by configurations <a href="./1076_5.HTM#5.2.1.1">5.2.1.1</a>, <a href="./1076_12.HTM#12.1">12.1</a><br>defined by design entities <a href="./1076_12.HTM#12.1">12.1</a><br>described <a href="./1076_1.HTM#1">1</a><br>elaboration
<ul>
<p>conditional or iterative <a href="./1076_9.HTM#9.7">9.7</a><br>described <a href="./1076_12.HTM#12.1">12.1</a><br>of component instances <a href="./1076_9.HTM#9.6.1">9.6.1</a>
</ul>
<p>ellaboration
<ul>
<p>described <a href="./1076_12.HTM#12">12</a>
</ul>
<p>portability of ports and generics in root <a href="./1076_AXC.HTM#ANNEXC">Annex C</a>
</ul>
<p>Design hierarchies, see also Blocks.<br>Design methodologies
<ul>
<p>portability issues <code><a href="./1076_AXC.HTM#ANNEXC">Annex C</a><br></code>reusing existing libraries <a href="./1076_9.HTM#9.6">9.6</a><br>structural design <a href="./1076_9.HTM#9.6">9.6</a>
</ul>
<p>Design units
<ul>
<p>described <a href="./1076_11.HTM#11.1">11.1</a><br>order of analysis <a href="./1076_11.HTM#11.4">11.4</a><br>primary
<ul>
<p>denoting <a href="./1076_6.HTM#6.3">6.3</a><br>syntax <a href="./1076_11.HTM#11.1">11.1</a><br>where used <a href="./1076_11.HTM#11.1">11.1</a>
</ul>
<p>reported in assertion violations <a href="./1076_8.HTM#8.2">8.2</a><br>reported in report statements <a href="./1076_8.HTM#8.3">8.3</a><br>secondary
<ul>
<p>portability issues <a href="./1076_AXC.HTM#ANNEXC">Annex C</a><br>syntax <a href="./1076_11.HTM#11.1">11.1</a><br>where <a href="./1076_11.HTM#11.1">11.1</a>
</ul>
<p>specifications related to <a href="./1076_5.HTM#5">5</a><br>syntax <a href="./1076_11.HTM#11.1">11.1</a><br>visibility of packages <a href="./1076_2.HTM#2.5">2.5</a><br>where used <a href="./1076_11.HTM#11.1">11.1</a>
</ul>
<p>Designators
<ul>
<p>as a basic operation <a href="./1076_3.HTM#3">3</a><br>described <a href="./1076_2.HTM#2.2">2.2</a><br>overloaded <a href="./1076_2.HTM#2.3.1">2.3.1</a><br>syntax <a href="./1076_2.HTM#2.1">2.1</a><br>where used <a href="./1076_2.HTM#2.1">2.1</a>, <a href="./1076_2.HTM#2.2">2.2</a>
</ul>
<p>Digits
<ul>
<p>decimal
<ul>
<p>syntax <a href="./1076_13.HTM#13.1">13.1</a><br>where used <a href="./1076_13.HTM#13.1">13.1</a>, <a href="./1076_13.HTM#13.4">13.4</a>, <a href="./1076_13.HTM#13.4.1">13.4.1</a>
</ul>
<p>extended
<ul>
<p>syntax <a href="./1076_13.HTM#13.4.2">13.4.2</a><br>where used <a href="./1076_13.HTM#13.4.2">13.4.2</a>, <a href="./1076_13.HTM#13.7">13.7</a>
</ul>
</ul>
<p>Direction
<ul>
<p>of discrete subtype indications <a href="./1076_4.HTM#4.2">4.2</a><br>syntax <a href="./1076_3.HTM#3.1">3.1</a><br>where used <a href="./1076_3.HTM#3.1">3.1</a>
</ul>
<p>Disconnection specifications
<ul>
<p>default
<ul>
<p>syntax <a href="./1076_5.HTM#5.3">5.3</a>
</ul>
<p>described <a href="./1076_5.HTM#5.3">5.3</a><br>elaboration of <a href="./1076_12.HTM#12.3.2.3">12.3.2.3</a><br>syntax <a href="./1076_5.HTM#5.3">5.3</a><br>usage
<ul>
<p>to turn off drivers of guarded signals <a href="./1076_4.HTM#4.3.1.2">4.3.1.2</a><br>with concurrent signal assignment statements <a href="./1076_9.HTM#9.5">9.5</a>
</ul>
<p>where used <a href="./1076_1.HTM#1.1.2">1.1.2</a>, <a href="./1076_1.HTM#1.2.1">1.2.1</a>, <a href="./1076_2.HTM#2.5">2.5</a>
</ul>
<p>Discrete ranges
<ul>
<p>bounds of <a href="./1076_6.HTM#6.5">6.5</a>, <a href="./1076_10.HTM#10.5">10.5</a><br>described <a href="./1076_3.HTM#3.2.1.1">3.2.1.1</a><br>direction of <a href="./1076_1.HTM#1.3.1">1.3.1</a>, <a href="./1076_6.HTM#6.5">6.5</a><br>static
<ul>
<p>described <a href="./1076_7.HTM#7.4">7.4</a><br>globally static <a href="./1076_7.HTM#7.4.2">7.4.2</a><br>locally static <a href="./1076_7.HTM#7.4.1">7.4.1</a>
</ul>
<p>syntax <a href="./1076_3.HTM#3.2.1">3.2.1</a><br>where used <a href="./1076_1.HTM#1.3.1">1.3.1</a>, <a href="./1076_3.HTM#3.2.1">3.2.1</a>, <a href="./1076_6.HTM#6.5">6.5</a>, <a href="./1076_7.HTM#7.3.2">7.3.2</a>, <a href="./1076_8.HTM#8.9">8.9</a>
</ul>
<p>Discrete types
<ul>
<p>described <a href="./1076_3.HTM#3.1">3.1</a><br>used in case statements <a href="./1076_8.HTM#8.8">8.8</a>
</ul>
<p>Drivers
<ul>
<p>active <a href="./1076_12.HTM#12.6.2">12.6.2</a>, <a href="./1076_12.HTM#12.6.4">12.6.4</a><br>assignments to <a href="./1076_2.HTM#2.1.1.2">2.1.1.2</a><br>associated <code><a href="./1076_12.HTM#12.6.1">12.6.1</a><br></code>constant <a href="./1076_1.HTM#1.1.1.2">1.1.1.2</a><br>creation of <a href="./1076_12.HTM#12.4.4">12.4.4</a><br>described <a href="./1076_12.HTM#12.6.1">12.6.1</a><br>determined by null transactions <a href="./1076_2.HTM#2.4">2.4</a>, <a href="./1076_12.HTM#12.6.2">12.6.2</a><br>in kernel process <a href="./1076_12.HTM#12.6">12.6</a><br>initial values of <a href="./1076_12.HTM#12.4.4">12.4.4</a><br>of guarded signals <a href="./1076_4.HTM#4.3.1.2">4.3.1.2</a>, <a href="./1076_5.HTM#5.3">5.3</a>
<ul>
<p>disconnection of <a href="./1076_5.HTM#5.3">5.3</a>, <a href="./1076_12.HTM#12.3.2.3">12.3.2.3</a>
</ul>
<p>of signals <a href="./1076_4.HTM#4.3.1.2">4.3.1.2</a>
</ul>
<p>DRIVING attribute <a href="./1076_7.HTM#7.4.1">7.4.1</a>, <a href="./1076_7.HTM#7.4.2">7.4.2</a>, <a href="./1076_14.HTM#S'DRIVING">14.1</a><br>DRIVING_VALUE attribute <code><a href="./1076_7.HTM#7.4.1">7.4.1</a></code>, <a href="./1076_7.HTM#7.4.2">7.4.2</a>, <a href="./1076_14.HTM#S'DRIVING_VALUE">14.1</a><br>Elaboration