NAME
	ADDA -- Add address

SYNOPSIS
	ADDA	<ea>,An

	Size = (Word, Long)

FUNCTION
	Adds the source operand to the destination address register,
	and stores the result in the destination address register. The size
	of the operation may be specified as word or long. The entire
	destination operand is used regardless of the operation size.

FORMAT
	-----------------------------------------------------------------
	|15 |14 |13 |12 |11 |10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
	|---|---|---|---|-----------|-----------|-----------|-----------|
	| 1 | 1 | 0 | 1 |  REGISTER |  OP-MODE  |    MODE   |  REGISTER |
	----------------------------------------=========================
                                                          <ea>
OP-MODE
	Indicates operation lenght:
	011->one Word operation: source operand is extended to 32 bits
	111->one Long operation

REGISTER
	One of the 8 address registers.
	<ea> is always source, all addressing modes are allowed.

	--------------------------------- -------------------------------
	|Addressing Mode|Mode| Register | |Addressing Mode|Mode|Register|
	|-------------------------------| |-----------------------------|
	|      Dn       |000 |N° reg. Dn| |    Abs.W      |111 |  000   |
	|-------------------------------| |-----------------------------|
	|      An       |001 |N° reg. An| |    Abs.L      |111 |  001   |
	|-------------------------------| |-----------------------------|
	|     (An)      |010 |N° reg. An| |   (d16,PC)    |111 |  010   |
	|-------------------------------| |-----------------------------|
	|     (An)+     |011 |N° reg. An| |   (d8,PC,Xi)  |111 |  011   |
	|-------------------------------| |-----------------------------|
	|    -(An)      |100 |N° reg. An| |   (bd,PC,Xi)  |111 |  011   |
	|-------------------------------| |-----------------------------|
	|   (d16,An)    |101 |N° reg. An| |([bd,PC,Xi],od)|111 |  011   | 
	|-------------------------------| |-----------------------------|
	|   (d8,An,Xi)  |110 |N° reg. An| |([bd,PC],Xi,od)|111 |  011   |
	|-------------------------------| |-----------------------------|
	|   (bd,An,Xi)  |110 |N° reg. An| |    #data      |111 |  100   |
	|-------------------------------| -------------------------------
	|([bd,An,Xi]od) |110 |N° reg. An|
	|-------------------------------|
	|([bd,An],Xi,od)|110 |N° reg. An|
	---------------------------------

RESULT
	None.

SEE ALSO
	ADDQ SUBQ SUBA