Texas Instruments MSP430x1xx - Manual (Page 74)

Addressing Modes
5-10
5.2.3 Symbolic Mode
The symbolic mode is described in Table 5–7.
Table 5–7. Symbolic Mode Description
Assembler Code Content of ROM
MOV EDE,TONI MOV X(PC),Y(PC)
X = EDE – PC
Y = TONI – PC
Length: Two or three words
Operation: Move the contents of the source address EDE (contents of
PC + X) to the destination address TONI (contents of PC + Y).
The words after the instruction contain the differences
between the PC and the source or destination addresses.
The assembler computes and inserts offsets X and Y
automatically. With symbolic mode, the program counter (PC)
is incremented automatically so that program execution
continues with the next instruction.
Comment: Valid for source and destination
Example: MOV EDE,TONI ;Source address EDE = 0F016h,
;dest. address TONI=01114h
011FEh
Address
Space
0F102h
04090h PC
0FF16h
0FF14h
0FF12h
0xxxxh
0A123h
0F018h
0F016h
0F014h 0xxxxh
0xxxxh
01234h
01116h
01114h
01112h 0xxxxh
0FF14h
+0F102h
0F016h
0FF16h
+011FEh
01114h
Register
Before:
011FEh
Address
Space
0F102h
04090h
PC
0FF16h
0FF14h
0FF12h
0xxxxh
0A123h
0F018h
0F016h
0F014h 0xxxxh
0xxxxh
0A123h
01116h
01114h
01112h 0xxxxh
Register
After:
0xxxxh