qa.hlp (Table of Contents; Topic list)
Type-Conversion Instructions
   Instruction Summary  Contents  Index
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These instructions offer a fast way to convert from one data type to
another, while preserving the sign. Use only with signed integer values.
These instructions always use a value in the accumulator (AL or AX).
 
Mnemonic      Name
CBW           Convert Byte to Word
CWD           Convert Word to Double
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