ADD Immediate
NAME
ADDI -- Add immediate
SYNOPSIS
ADDI #<data>,<ea>
Size = (Byte, Word, Long)
FUNCTION
Adds the immediate data to the destination operand, and
stores the result in the destination location. The size of the
operation may be specified as byte, word, or long. The size of the
immediate data matches the operation size.
FORMAT
<ea>
----------------------------------------=========================
|15 |14 |13 |12 |11 |10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
|---|---|---|---|---|---|---|---|-------|-----------|-----------|
| 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | SIZE | MODE | REGISTER |
|---------------------------------------------------------------|
| 16 BITS DATA (with last Byte) | 8 BITS DATA |
|---------------------------------------------------------------|
| 32 BITS DATA (included last Word) |
-----------------------------------------------------------------
SIZE
00->one Byte operation
01->one Word operation
10->one Long operation
REGISTER
<ea> is always destination, addressing modes are the followings:
--------------------------------- -------------------------------
|Addressing Mode|Mode| Register | |Addressing Mode|Mode|Register|
|-------------------------------| |-----------------------------|
| Dn |000 |N° reg. Dn| | Abs.W |111 | 000 |
|-------------------------------| |-----------------------------|
| An | - | - | | Abs.L |111 | 001 |
|-------------------------------| |-----------------------------|
| (An) |010 |N° reg. An| | (d16,PC) | - | - |
|-------------------------------| |-----------------------------|
| (An)+ |011 |N° reg. An| | (d8,PC,Xi) | - | - |
|-------------------------------| |-----------------------------|
| -(An) |100 |N° reg. An| | (bd,PC,Xi) | - | - |
|-------------------------------| |-----------------------------|
| (d16,An) |101 |N° reg. An| |([bd,PC,Xi],od)| - | - |
|-------------------------------| |-----------------------------|
| (d8,An,Xi) |110 |N° reg. An| |([bd,PC],Xi,od)| - | - |
|-------------------------------| |-----------------------------|
| (bd,An,Xi) |110 |N° reg. An| | #data | - | - |
|-------------------------------| -------------------------------
|([bd,An,Xi]od) |110 |N° reg. An|
|-------------------------------|
|([bd,An],Xi,od)|110 |N° reg. An|
---------------------------------
RESULT
X - Set the same as the carry bit.
N - Set if the result is negative. Cleared otherwise.
Z - Set if the result is zero. Cleared otherwise.
V - Set if an overflow is generated. Cleared otherwise.
C - Set if a carry is generated. Cleared otherwise.
SEE ALSO
ADD ADDQ ADDX
SUB SUBI SUBQ
SUBX
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& witbrock@cs.cmu.edu