1;
ESAC;
IF Instruction = FICOMP
    THEN
         PopRegisterStack;
FI;</pre>
<h2>FPU Flags Affected</h2>
<table class="exception-table">
<tr>
<td>C1</td>
<td>Set to 0.</td></tr>
<tr>
<td>C0, C2, C3</td>
<td>See table on previous page.</td></tr></table>
<h2>Floating-Point Exceptions</h2>
<table class="exception-table">
<tr>
<td>#IS</td>
<td>Stack underflow occurred.</td></tr>
<tr>
<td>#IA</td>
<td>One or both operands are NaN values or have unsupported formats.</td></tr></table>
<p>#D</p>
<p>One or both op