1076_ina.html

basic exemple. Do an ADD of two 4 bits numbers

</ul>
<p>described <a href="./1076_5.HTM#5.2.1">5.2.1</a><br>elaboration of <a href="./1076_12.HTM#12.3.2.2">12.3.2.2</a><br>example <a href="./1076_1.HTM#1.3.1">1.3.1</a><br>primary <a href="./1076_5.HTM#5.2.1">5.2.1</a><br>restrictions
<ul>
<p>for component configurations <a href="./1076_5.HTM#5.2">5.2</a><br>for configuration specifications <a href="./1076_5.HTM#5.2">5.2</a><code></code>
</ul>
<p>syntax <a href="./1076_5.HTM#5.2.1">5.2.1</a><br>where used <a href="./1076_1.HTM#1.3.1">1.3.1</a>, <a href="./1076_5.HTM#5.2">5.2</a>
</ul>
<p>Bindings
<ul>
<p>deferred <a href="./1076_1.HTM#1.3">1.3</a>, <a href="./1076_5.HTM#5.2.1.1">5.2.1.1</a>
</ul>
<p>BIT type <a href="./1076_3.HTM#3.1.1.1">3.1.1.1</a>, <a href="./1076_3.HTM#3.2.1.2">3.2.1.2</a>, <a href="./1076_7.HTM#7.2">7.2</a>, <a href="./1076_7.HTM#7.2.1">7.2.1</a>, <a href="./1076_7.HTM#7.2.3">7.2.3</a><br>Bit values
<ul>
<p>syntax <a href="./1076_13.HTM#13.7">13.7</a><br>where used <a href="./1076_13.HTM#13.7">13.7</a>, <a href="./1076_AXA.HTM#BIT_VALUE">Annex A</a>
</ul>
<p>BIT_VECTOR type <a href="./1076_3.HTM#3.2.1.2">3.2.1.2</a><br>Block configurations
<ul>
<p>applicability <a href="./1076_1.HTM#1.3.1">1.3.1</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">1.3.1</a><br>implicit <a href="./1076_1.HTM#1.3.1">1.3.1</a>, <a href="./1076_12.HTM#12.1">12.1</a><br>scope of <a href="./1076_10.HTM#10.2">10.2</a><br>syntax <a href="./1076_13.HTM#13.1">13.1</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>when architecture identifier is used <a href="./1076_5.HTM#5.2.1.2">5.2.1.2</a>
</ul>
<p>visibility within <a href="./1076_10.HTM#10.3">10.3</a><br>where used <a href="./1076_1.HTM#1.3">1.3</a>, <a href="./1076_1.HTM#1.3.1">1.3.1</a>
</ul>
<p>Block declarative items
<ul>
<p>syntax <a href="./1076_1.HTM#1.2.1">1.2.1</a><br>usage <a href="./1076_1.HTM#1.2.2">1.2.2</a><br>where used <a href="./1076_9.HTM#9.1">9.1</a>, <a href="./1076_9.HTM#9.7">9.7</a>
</ul>
<p>Block declarative part
<ul>
<p>elaboration of <a href="./1076_12.HTM#12.4.1">12.4.1</a>, <a href="./1076_12.HTM#12.4.2">12.4.2</a><br>syntax <a href="./1076_9.HTM#9.1">9.1</a><br>where used <a href="./1076_9.HTM#9.1">9.1</a>
</ul>
<p>Block headers
<ul>
<p>containing map aspects <a href="./1076_5.HTM#5.2.1.2">5.2.1.2</a><code><br>
</code>correspondences
<ul>
<p>to component declarations <a href="./1076_9.HTM#9.6.1">9.6.1</a><br>to component instantiation statements <a href="./1076_9.HTM#9.6.2">9.6.2</a><br>to design entities <a href="./1076_9.HTM#9.6.1">9.6.1</a>
</ul>
<p>elaboration of <a href="./1076_12.HTM#12.2">12.2</a>, <a href="./1076_12.HTM#12.4.1">12.4.1</a><br>syntax <a href="./1076_9.HTM#9.1">9.1</a><br>where used <a href="./1076_9.HTM#9.1">9.1</a>
</ul>
<p>Block specifications
<ul>
<p>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>Block statement part
<ul>
<p>elaboration of <a href="./1076_12.HTM#12.4.2">12.4.2</a><br>syntax <a href="./1076_9.HTM#9.1">9.1</a><br>where used <a href="./1076_9.HTM#9.1">9.1</a>
</ul>
<p>Block statements
<ul>
<p>as declarative regions <a href="./1076_10.HTM#10.1">10.1</a><br>described <a href="./1076_9.HTM#9.1">9.1</a><br>elaboration of <a href="./1076_12.HTM#12.1">12.1</a>, <a href="./1076_12.HTM#12.4.1">12.4.1</a>, <a href="./1076_12.HTM#12.4.2">12.4.2</a><br>implied <a href="./1076_9.HTM#9.6.2">9.6.2</a>, <a href="./1076_12.HTM#12.4.2">12.4.2</a><br>labels <a href="./1076_1.HTM#1.3.1">1.3.1</a>
<ul>
<p>elaboration of <a href="./1076_12.HTM#12.4.2">12.4.2</a><br>where used <a href="./1076_1.HTM#1.3.1">1.3.1</a>
</ul>
<p>syntax <a href="./1076_9.HTM#9.1">9.1</a><br>usage <a href="./1076_1.HTM#1.3.1">1.3.1</a>, <a href="./1076_9.HTM#9.6">9.6</a>, <a href="./1076_9.HTM#9.6.1">9.6.1</a><br>where used <a href="./1076_9.HTM#9.1">9.1</a>
</ul>
<p>Blocks
<ul>
<p>communication to <a href="./1076_1.HTM#1.1.1.1">1.1.1.1</a><br>described <a href="./1076_1.HTM#1">1</a><br>interconnection via concurrent statements <a href="./1076_9.HTM#9">9</a><br>scope of <a href="./1076_10.HTM#10.2">10.2</a><br>usage <a href="./1076_9.HTM#9.6">9.6</a>, <a href="./1076_9.HTM#9.6.1">9.6.1</a>
</ul>
<p>Boldface <a href="./1076_0.HTM#0.2.1">0.2.1</a><br>BOOLEAN type <a href="./1076_3.HTM#3.1.1.1">3.1.1.1</a>, <a href="./1076_7.HTM#7.2">7.2</a>, <a href="./1076_7.HTM#7.2.1">7.2.1</a>, <a href="./1076_7.HTM#7.2.2">7.2.2</a>, <a href="./1076_7.HTM#7.2.3">7.2.3</a><br>Buffer ports, see Ports.<br>Bus signals <a href="./1076_2.HTM#2.1.1.2">2.1.1.2</a>, <a href="./1076_2.HTM#2.4">2.4</a>, <a href="./1076_4.HTM#4.3.2">4.3.2</a><br>Case statement alternatives
<ul>
<p>syntax <a href="./1076_8.HTM#8.8">8.8</a><br>where used <a href="./1076_8.HTM#8.8">8.8</a>
</ul>
<p>Case statements
<ul>
<p>described <a href="./1076_8.HTM#8.8">8.8</a><br>syntax <a href="./1076_8.HTM#8.8">8.8</a><br>usage
<ul>
<p>as signal transforms <a href="./1076_9.HTM#9.5.2">9.5.2</a><br>with null statements <a href="./1076_8.HTM#8.1.3">8.1.3</a>
</ul>
<p>where used <a href="./1076_8.HTM#8">8</a>, <a href="./1076_9.HTM#9.5">9.5</a>
</ul>
<p>Character set, VHDL <a href="./1076_13.HTM#13.1">13.1</a><br>CHARACTER type <a href="./1076_3.HTM#3.2.1.2">3.2.1.2</a><br>Character types, used in case statements <a href="./1076_8.HTM#8.8">8.8</a><br>Characters
<ul>
<p>apostrophe (') <a href="./1076_13.HTM#13.5">13.5</a><br>backslash (\) <a href="./1076_13.HTM#13.3.2">13.3.2</a><br>basic
<ul>
<p>allowable replacements for 180<code> <a href="./1076_13.HTM#13.10">13.10</a><br></code>syntax <a href="./1076_13.HTM#13.1">13.1</a>
</ul>
<p>basic graphic
<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>
</ul>
<p>braces { } <a href="./1076_0.HTM#0.2.1">0.2.1</a><br>colon (:) <a href="./1076_13.HTM#13.10">13.10</a><br>exclamation mark (!) <a href="./1076_13.HTM#13.10">13.10</a><br>graphic
<ul>
<p>syntax <a href="./1076_13.HTM#13.1">13.1</a><br>where used <a href="./1076_13.HTM#13.3.2">13.3.2</a>, <a href="./1076_13.HTM#13.5">13.5</a>
</ul>
<p>lower case
<ul>
<p>where used <a href="./1076_13.HTM#13.1">13.1</a>
</ul>
<p>number sign (#) <a href="./1076_13.HTM#13.4.2">13.4.2</a>, <a href="./1076_13.HTM#13.10">13.10</a><br>other special
<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>
</ul>
<p>percent sign (%) <a href="./1076_13.HTM#13.10">13.10</a><br>quotation mark (")
<ul>
<p>where used <a href="./1076_13.HTM#13.6">13.6</a>
</ul>
<p>quotation mark (") <a href="./1076_13.HTM#13.10">13.10</a>
<ul>
<p>where used <a href="./1076_13.HTM#13.6">13.6</a>, <a href="./1076_13.HTM#13.7">13.7</a>
</ul>
<p>spaces
<ul>
<p>syntax <a href="./1076_13.HTM#13.1">13.1</a><br>where prohibited <a href="./1076_13.HTM#13.3.1">13.3.1</a><br>where used <a href="./1076_13.HTM#13.1">13.1</a><u></u>
</ul>
<p>special
<ul>
<p>names of <a href="./1076_13.HTM#13.1">13.1</a><br>syntax <a href="./1076_13.HTM#13.1">13.1</a><br>where used <a href="./1076_13.HTM#13.1">13.1</a>
</ul>
<p>square brackets [ ] <a href="./1076_0.HTM#0.2.1">0.2.1</a><br>used in instance names
<ul>
<p>separator (:) <a href="./1076_14.HTM#14.1">14.1</a>
</ul>
<p>used in path names
<ul>
<p>leader (:) <a href="./1076_14.HTM#14.1">14.1</a><br>separator (:) <a href="./1076_14.HTM#14.1">14.1</a>
</ul>
<p>vertical bar (|) <a href="./1076_0.HTM#0.2.1">0.2.1</a><br>vertical line (|) <a href="./1076_13.HTM#13.10">13.10</a>
</ul>
<p>Characters, see also Operators, Symbols.<code><br>
</code>Choices
<ul>
<p>in case statements <a href="./1076_8.HTM#8.8">8.8</a><br>syntax <a href="./1076_7.HTM#7.3.2">7.3.2</a><br>where used <a href="./1076_3.HTM#3.2">3.2</a>, <a href="./1076_8.HTM#8.8">8.8</a>
</ul>
<p>Comments <a href="./1076_13.HTM#13.8">13.8</a><br>Component configurations
<ul>
<p>as declarative regions <a href="./1076_10.HTM#10.1">10.1</a><br>binding indications in <a href="./1076_5.HTM#5.2.1">5.2.1</a><br>containing block configurations <a href="./1076_1.HTM#1.3.2">1.3.2</a><br>default entity aspect of <a href="./1076_5.HTM#5.2.2">5.2.2</a><br>described <a href="./1076_1.HTM#1.3.2">1.3.2</a><br>implicit <a href="./1076_1.HTM#1.3.1">1.3.1</a>, <a href="./1076_12.HTM#12.1">12.1</a><br>restrictions
<ul>
<p>against conflicting configurations <a href="./1076_1.HTM#1.3.2">1.3.2</a>
</ul>
<p>syntax <a href="./1076_1.HTM#1.3.2">1.3.2</a><br>used to bind component instances to design entities <a href="./1076_4.HTM#4.5">4.5</a><br>visibility rules for <a href="./1076_10.HTM#10.3">10.3<code></a><br></code>where used <a href="./1076_1.HTM#1.3.1">1.3.1</a>
</ul>
<p>Component declarations
<ul>
<p>as declarative regions <a href="./1076_10.HTM#10.1">10.1</a><br>bindings to design entities <a href="./1076_5.HTM#5.2.1">5.2.1</a><br>described <a href="./1076_4.HTM#4.5">4.5</a><br>elaboration of <a href="./1076_12.HTM#12.3.1.7">12.3.1.7</a><br>prohibitions on attributes <a href="./1076_5.HTM#5.1">5.1</a><br>scope of <a href="./1076_10.HTM#10.2">10.2</a><br>syntax <a href="./1076_4.HTM#4.5">4.5</a>
<ul>
<p>usage <a href="./1076_5.HTM#5.2">5.2</a>, <a href="./1076_9.HTM#9.6">9.6</a>, <a href="./1076_9.HTM#9.6.1">9.6.1</a><br>where used <a href="./1076_1.HTM#1.2.1">1.2.1</a>, <a href="./1076_2.HTM#2.5">2.5</a>
</ul>
</ul>
<p>Component instances
<ul>
<p>association with configurations <a href="./1076_1.HTM#1.3.2">1.3.2</a><br>bound
<ul>
<p>described <a href="./1076_1.HTM#1.3">1.3</a><br>elaboration of <a href="./1076_12.HTM#12.3.2.2">12.3.2.2</a><br>to design entities <a href="./1076_5.HTM#5.2.1.1">5.2.1.1</a>
</ul>
<p>fully bound <a href="./1076_1.HTM#1.3.1">1.3.1</a>, <a href="./1076_5.HTM#5.2.1.1">5.2.1.1</a><br>index range <a href="./1076_3.HTM#3.2.1.1">3.2.1.1</a><br>labels
<ul>
<p>in blocks <a href="./1076_1.HTM#1.3.1">1.3.1</a>
</ul>
<p>paths to
<ul>
<p>syntax <a href="./1076_14.HTM#E'PATH_NAME">14.1</a><br>where used <a href="./1076_14.HTM#E'PATH_NAME">14.1</a>
</ul>
<p>unbound
<ul>
<p>defaults for <a href="./1076_1.HTM#1.3.2">.1.3.2</a><br>elaboration of <a href="./1076_12.HTM#12.1">12.1</a>
</ul>
<p>with conflicting configurations <a href="./1076_1.HTM#1.3.2">1.3.2</a>
</ul>
<p>Component instantiation statements
<ul>
<p>containing map aspects <a href="./1076_5.HTM#5.2.1.2">5.2.1.2</a><br>default entity aspect of <a href="./1076_5.HTM#5.2.2">5.2.2</a><br>described <a href="./1076_9.HTM#9.6">9.6</a><br>elaboration of <a href="./1076_12.HTM#12.4.3">12.4.3</a><br>interfaces of <a href="./1076_4.HTM#4.5">4.5</a><br>referenced in configuration specifications <a href="./1076_5.HTM#5.2">5.2</a><br>syntax <a href="./1076_9.HTM#9.6">9.6</a><br>usage
<ul>
<p>to instantiate a component <a href="./1076_9.HTM#9.6.1">9.6.1</a><br>to instantiate a design entity <a href="./1076_9.HTM#9.6.2">9.6.2</a>
</ul>
<p>where used <a href="./1076_9.HTM#9">9</a>
</ul>
<p>Component names
<ul>
<p>where used <a href="./1076_9.HTM#9.6">9.6</a>
</ul>
<p>Component specifications
<ul>
<p>elaboration of <a href="./1076_12.HTM#12.3.2.2">12.3.2.2</a><br>syntax <a href="./1076_5.HTM#5.2">5.2</a><br>where used <a href="./1076_1.HTM#1.3.2">1.3.2</a>, <a href="./1076_5.HTM#5.2">5.2</a>
</ul>
<p>Composite types
<ul>
<p>described <a href="./1076_3.HTM#3.2">3.2</a><br>objects of <a href="./1076_4.HTM#4.3">4.3</a>, <a href="./1076_4.HTM#4.4">4.4</a><br>restrictions
<ul>
<p>on file types <a href="./1076_3.HTM#3.4">3.4</a>
</ul>
<p>syntax <a href="./1076_3.HTM#3.2">3.2</a><br>usage <a href="./1076_3.HTM#3">3</a>
</ul>
<p>Concurrent assertion statements
<ul>
<p>described <a href="./1076_9.HTM#9.3">9.3</a><br>elaboration of <a href="./1076_12.HTM#12.4.4">12.4.4</a><br>syntax <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
<ul>