Destination Sign-Extended -->; Destination

Assembler Syntax:
EXTB.L Dn extends byte to long word

Attributes: Size = (Long)

Description: Extends a byte in a data register to a long word
by replicating the sign bit to the left. Bit [7] of the
designated data register is copied to bits [31:16] of that
data register.

Condition Codes:

X Not affected.
N Set if the result is negative. Cleared otherwise.
Z Set if the result is zero. Cleared otherwise.
V Always cleared.
C Always cleared.