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<title>12.2.10 Pragma ST_place_at_workspace_offset </title>
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<a name="1204746"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">12.2.10 Pragma ST_place_at_workspace_offset</font>
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<p>
<a name="1204747"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">This pragma directs <strong>st20cc</strong> to allocate a local (automatic) variable at <font size=2 face=Courier><strong><em>offset</em></strong></font> words from the base of the current function's local workspace. <strong>st20cc</strong> ensures that at least <font size=2 face=Courier><strong><em>offset</em></strong></font> words are allocated, and that no other variables in scope at the same time as <font size=2 face=Courier><strong><em>local.variable</em></strong></font> are allocated in the same place in workspace.</font>
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<a name="1204748"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">Syntax:</font>
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<a name="1206478"> </a><font size=2 face=Courier><strong>#pragma ST_place_at_workspace_offset (<font size=2 face=Courier><strong><em>local</em></strong></font><font size=2 face=Courier><strong>.</strong></font><font size=2 face=Courier><strong><em>variable</em></strong></font><font size=2 face=Courier><strong>,</strong></font><font size=2 face=Courier><strong><em>offset</em></strong></font>)<br></strong></font>
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<a name="1204749"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">This pragma is useful when using instructions which require that values are placed at fixed workspace offsets, or which may overwrite values in workspace.</font>
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<a name="1204750"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">For example, the ST20C2 <font size=2 face=Courier><strong>disc</strong></font> instruction writes to workspace location "<font size=2 face=Courier><strong>0</strong></font>", so to ensure that no other local variables will be allocated in this location, a dummy variable can be declared and placed at this location, as in the following example:</font>
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