Motorola CPU32 Reference Manual page 66

ADD
Effective Address Field — Determines addressing mode:
If the location specified is a source operand, all addressing modes are allowed as
shown:
Addressing Mode
Dn
An*
(An)
(An) +
– (An)
(d , An)
16
(d , An, Xn)
8
(bd, An, Xn)
*Word and long word only
If the location specified is a destination operand, only memory alterable addressing
modes are allowed as shown:
Addressing Mode
Dn
An
(An)
(An) +
– (An)
(d , An)
16
(d , An, Xn)
8
(bd, An, 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.
MOTOROLA
4-18
Mode Register
000 Reg. number: Dn
001 Reg. number: An
010 Reg. number: An
011 Reg. number: An
100 Reg. number: An
101 Reg. number: An
110 Reg. number: An
110 Reg. number: An
Mode Register
— —
— —
010 Reg. number: An
011 Reg. number: An
100 Reg. number: An
101 Reg. number: An
110 Reg. number: An
110 Reg. number: An
INSTRUCTION SET
Add
Addressing Mode
(xxx).W
(xxx).L
#〈data〉
(d , PC)
16
(d , PC, Xn)
8
(bd, PC, Xn)
Addressing Mode
(xxx).W
(xxx).L
#〈data〉
(d , PC)
16
(d , PC, Xn)
8
(bd, PC, Xn)
ADD
Mode Register
111 000
111 001
111 100
111 010
111 011
111 011
Mode Register
111 000
111 001
— —
— —
— —
— —
CPU32
REFERENCE MANUAL