Texas Instruments MSP430x1xx - Manual (Page 380)

Instruction Set Overview
B-30
* INC[.W ] Increment destination
* INC.B Increment destination
Syntax INC dst or INC.W dst
INC.B dst
Operation dst + 1 –> dst
Emulation ADD #1,dst
Description The destination operand is incremented by one. The original contents are lost.
Status Bits N: Set if result is negative, reset if positive
Z: Set if dst contained 0FFFFh, reset otherwise
Set if dst contained 0FFh, reset otherwise
C: Set if dst contained 0FFFFh, reset otherwise
Set if dst contained 0FFh, reset otherwise
V: Set if dst contained 07FFFh, reset otherwise
Set if dst contained 07Fh, reset otherwise
Mode Bits OscOff, CPUOff, and GIE are not affected.
Example The item on the top of a software stack (not the system stack) for byte data is
removed.
SSP .EQU R4
;
INC SSP ; Remove TOSS (top of SW stack) by increment
; Do not use INC.B since SSP is a word register
Example The status byte of a process STATUS is incremented. When it is equal to 11,
a branch to OVFL is taken.
INC.B STATUS
CMP.B #11,STATUS
JEQ OVFL