Texas Instruments MSP430x1xx User Manual page 78

Instruction Set
* INCD[.W] Double-increment destination
* INCD.B Double-increment destination
Syntax INCD
INCD.B
Operation dst + 2 −> dst
Emulation ADD
Emulation ADD.B
Example The destination operand is incremented by two. The original contents are lost.
Status Bits N: Set if result is negative, reset if positive
Z: Set if dst contained 0FFFEh, reset otherwise
C: Set if dst contained 0FFFEh or 0FFFFh, reset otherwise
V: Set if dst contained 07FFEh or 07FFFh, reset otherwise
Mode Bits OSCOFF, CPUOFF, and GIE are not affected.
Example The item on the top of the stack (TOS) is removed without using a register.
.......
PUSH
INCD
RET
Example The byte on the top of the stack is incremented by two.
INCD.B
RISC 16−Bit CPU
3-42
dst or INCD.W
dst
#2,dst
#2,dst
Set if dst contained 0FEh, reset otherwise
Set if dst contained 0FEh or 0FFh, reset otherwise
Set if dst contained 07Eh or 07Fh, reset otherwise
R5 ; R5 is the result of a calculation, which is stored
; in the system stack
SP ; Remove TOS by double-increment from stack
; Do not use INCD.B, SP is a word-aligned
; register
0(SP) ; Byte on TOS is increment by two
dst