Motorola CPU32 Reference Manual page 76

ADD
Add
ADD
Effective Address Field - Determines addressing mode:
If the location specified is a source operand, all addressing modes are allowed as shown:
Addressing Mode Mode Register
Addressing Mode Mode Register
Dn 000 Reg. number: Dn
(xxx).W 111 000
An* 001
Reg. number: An (xxx).L 111
001
(An) 010 Reg. number: An
#(data)
111 100
(An) + 011 Reg. number: An
-(An) 100
Reg. number: An
(d16, An) 101 Reg. number: An
(d16, PC) 111 010
(ds, An, Xn)
110
Reg. number: An
(ds, PC, Xn)
111 011
(bd, An, Xn) 110 Reg. number: An (bd, PC, Xn) 111 011
*Word and long word only
If the location specified is a destination operand, only memory alterable addressing modes are
allowed as shown:
Addressing Mode Mode Register
Addressing Mode Mode Register
Dn
- -
(xxx).W 111 000
An
- -
(xxx).L 111 001
(An) 010 Reg. number: An #(data)
- -
(An)
+ 011 Reg. number: An
-(An) 100 Reg. number: An
(d16, An)
101 Reg. number: An
(d16, PC)
- -
(ds, An, Xn)
110 Reg. number: An
(ds, PC, Xn)
- -
(bd, An, Xn) 110 Reg. number: An (bd, PC, Xn)
- -
NOTES:
1. Dn mode is used when destination is a data register. Destination (ea) mode is invalid for a
data register.
2. ADDA is used when the destination is an address register. ADDI and ADDQ are used
when the source is immediate data. Most assemblers automatically make this distinction.
CPU32 REFERENCE MANUAL INSTRUCTION SET MOTOROLA
4-23
III