Texas Instruments MSP430x1xx - Manual (Page 358)

Instruction Set Overview
B-8
B.2 Instruction Set Description
This section catalogues and describes all core and emulated instructions in
alphabetical order. Some examples serve as explanations and others as
application hints.
The suffix .W or no suffix in the instruction mnemonic results in a word
operation.
The suffix .B at the instruction mnemonic results in a byte operation.