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C166 User's Guide

FIXMDU Compiler Directive

Abbreviation None.
Arguments 

None.

Default 

MUL and DIV instruction are not atomic.

µVision Options — C166 — Misc Controls.
Description 

The FIXMDU directive causes the C166 Compiler to insert an ATOMIC instruction prior to MUL and DIV instructions. This is required for some early Flash devices which require that MUL and DIV instruction are atomic.

Example 
#pragma FIXMDU