# EXT Instruction

The instruction EXT (Sign EXTend) makes a sign extension, byte to a word or a word to a longword. If you extend a byte to a word, bit 7 is copied to bit 15-8. If you extend a word to a longword, bit 15 is copied to bit 31-16.
ADDRESS METHODS: Dn
DATA LENGTH: Word, Longword

FLAGS: | X - U
N - S
Z - S
C - 0
V - 0

SYNTAX: EXT Dn

EXAMPLE CODE:

EXT.L D0 if D0 contained 0000FFF5, it would change D0 to FFFFFFF5