Table of Contents
Advertisement
PEA
Operation:
Assembler
Syntax:
Attributes:
Description:
effective address must be a long word address.
Condition Codes:
Not affected.
Instruction Format:
15
14
13
0
1
0
Instruction Fields:
Effective Address field — Specifies the address to be pushed onto the stack. Only
control addressing modes are allowed as shown:
Addressing Mode
Dn
An
(An)
(An) +
– (An)
(d
, An)
16
(d
, An, Xn)
8
(bd, An, Xn)
MOTOROLA
4-128
Push Effective Address
Sp – 4 → SP; 〈ea〉 → (SP)
PEA 〈ea〉
Size = (Long)
Computes the effective address and pushes it onto the stack. The
12
11
10
9
0
1
0
0
Mode
Register
—
—
—
—
010
Reg. number: An
—
—
—
—
101
Reg. number: An
110
Reg. number: An
110
Reg. number: An
INSTRUCTION SET
8
7
6
5
0
0
1
Addressing Mode
(xxx).W
(xxx).L
#〈data〉
(d
, PC)
16
(d
, PC, Xn)
8
(bd, PC, Xn)
PEA
4
3
2
1
EFFECTIVE ADDRESS
MODE
REGISTER
Mode
Register
111
000
111
001
—
—
111
010
111
011
111
011
REFERENCE MANUAL
0
CPU32
Advertisement
Table of Contents
