Motorola CPU32 Reference Manual page 193

SUB
Effective Address field — Determines the 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)
*For byte size operation, address register direct is not allowed.
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. If the destination is a data register, it must be specified as a destination Dn address, not as a destination 〈ea〉
address.
2. Most assemblers use SUBA when the destination is an address register, and SUBI or SUBQ when the source
is immediate data.
CPU32
REFERENCE MANUAL
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
Subtract
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)
SUB
Mode Register
111 000
111 001
111 100
111 010
111 011
111 011
Mode Register
111 000
111 001
— —
— —
— —
— —
MOTOROLA
4-145