Motorola CPU32 Reference Manual page 196

SUBI
Instruction Fields:
Size field — Specifies the size of the operation.
00 — Byte operation
01 — Word operation
10 — Long operation
Effective Address field — Specifies the destination operand. Only data alterable
addressing modes are allowed as shown:
Addressing Mode
Dn
An
(An)
(An) +
– (An)
(d , An)
16
(d , An, Xn)
8
(bd, An, Xn)
Immediate field — (Data immediately following the instruction)
If size = 00, the data is the low-order byte of the immediate word.
If size = 01, the data is the entire immediate word.
If size = 10, the data is the next two immediate words.
MOTOROLA
4-148
Subtract Immediate
Mode Register
000 Reg. number: Dn
— —
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
Addressing Mode Mode
(xxx).W 111
(xxx).L 111
#〈data〉 —
(d , PC)
—
16
(d , PC, Xn)
—
8
(bd, PC, Xn) —
REFERENCE MANUAL
SUBI
Register
000
001
—
—
—
—
CPU32