Texas Instruments MSP430x1xx User Manual page 60

Instruction Set
AND[.W] Source AND destination
AND.B Source AND destination
Syntax AND
AND.B
Operation src .AND. dst −> dst
Description The source operand and the destination operand are logically ANDed. The
result is placed into the destination.
Status Bits N: Set if result MSB is set, reset if not set
Z: Set if result is zero, reset otherwise
C: Set if result is not zero, reset otherwise ( = .NOT. Zero)
V: Reset
Mode Bits OSCOFF, CPUOFF, and GIE are not affected.
Example The bits set in R5 are used as a mask (#0AA55h) for the word addressed by
TOM. If the result is zero, a branch is taken to label TONI.
MOV
AND
JZ
......
;
;
;
;
;
AND
JZ
Example The bits of mask #0A5h are logically ANDed with the low byte TOM. If the result
is zero, a branch is taken to label TONI.
AND.B
JZ
......
RISC 16−Bit CPU
3-24
src,dst or AND.W src,dst
src,dst
#0AA55h,R5 ; Load mask into register R5
R5,TOM ; mask word addressed by TOM with R5
TONI ;
; Result is not zero
or
#0AA55h,TOM
TONI
#0A5h,TOM ; mask Lowbyte TOM with 0A5h
TONI ;
; Result is not zero