Important Notice

The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

   ◄Summary►  ◄Detail►  ◄Example►  ◄Key to Flags►
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Convert Byte to Word                             Flags:  O D I T S Z A P C
                                                         ═════════════════
Syntax:  CBW
 
  Converts a signed byte in AL to a signed word in AX by extending
  the sign bit of AL into all bits of AH.
                                    -♦-