CoMPare Address

NAME
	CMPA -- Compare address

SYNOPSIS
	CMPA	<ea>,An

	Size = (Word, Long)

FUNCTION
	Subtracts the source operand from the destination address
	register and sets the condition codes according to the result. The
	address register is NOT changed. Word sized source operands are
	sign extended to long for comparison.

FORMAT
	-----------------------------------------------------------------
	|15 |14 |13 |12 |11 |10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
	|---|---|---|---|-----------|-----------|-----------|-----------|
	| 1 | 0 | 1 | 1 |  REGISTER |  OP-MODE  |    MODE   | REGISTER  |
	----------------------------------------=========================
	                                                  <ea>

OP-MODE
	011	16 bits operation.
	111	32 bits operation.

REGISTER
	The address register specifies destination An.
	<ea> specifies source operand, addressing modes allowed are:
	--------------------------------- -------------------------------
	|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
	X - Not affected
	N - Set if the result is negative. Cleared otherwise.
	Z - Set if the result is zero. Cleared otherwise.
	V - Set if an overflow occours. Cleared otherwise.
	C - Set if a borrow occours. Cleared otherwise.

SEE ALSO
	CMP  CMPI CMP2

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