Move Half To Full Word - Sign-Extended - Analog Devices ADSP-BF53x Blackfin Reference

Move Half to Full Word – Sign-Extended
General Form
dest_reg = src_reg (X)
Syntax
Dreg = Dreg_lo (X) ;
Syntax Terminology
:
Dreg R7–0
:
Dreg_lo R7–0.L
Instruction Length
In the syntax, comment (a) identifies 16-bit instruction length.
Functional Description
The Move Half to Full Word – Sign-Extended instruction converts a
signed half word (16 bits) to a signed word (32 bits). The instruction cop-
ies the least significant 16 bits from a source register into the lower half of
a 32-bit register and sign-extends the upper half of the destination regis-
ter. The operation supports only D-registers.
Flags Affected
The following flags are affected by the Move Half to Full
Word – Sign-Extended instruction.
• is set if result is zero; cleared if nonzero.
AZ
• is set if result is negative; cleared if non-negative.
AN
• is cleared.
AC0
ADSP-BF53x/BF56x Blackfin Processor Programming Reference
/* (a)*/
Move
9-13