MOVE Multiple registers

NAME
	MOVEM -- Move multiple registers

SYNOPSIS
	MOVEM	<register list>,<ea>
	MOVEM	<ea>,<register list>

	Size = (Word, Long)

FUNCTION
	Registers in the register list are either moved to or
	fetched from consecutive memory locations at the specified
	address. Data can be either word or long word, but if
	the register list is destination and the size is word,
	each register is filled with the source word sign extended
	to 32-bits.

	Also, in the case that the register list is the destination,
	register indirect with predecrement is not a valid source
	mode. If the register list is the source, then the
	destination may not be register indirect with postincrement.

		MOVEM.L	D0/D1/A0,(A2)+		;invalid
		MOVEM.W	-(A1),D5/D7/A4		;invalid

	The register list is accessed with D0 first through D7, followed
	by A0 through A7.

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

	dr specifies move direction:
	0->registers to memory
	1->memory to registers

	MASK FROM REGISTER LIST specifies registers which must be moved and
	indicates their move order.

	For pre-decrementing, mask has the following format:
	-----------------------------------------------------------------
	|15 |14 |13 |12 |11 |10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
	|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
	|D0 |D1 |D2 |D3 |D4 |D5 |D6 |D7 |A0 |A1 |A2 |A3 |A4 |A5 |A6 |A7 |
	------------------------------------------------------------=====
	                                                              |
	First register to be moved------------------------------------'

	For post-incrementing, mask has the following format:
	-----------------------------------------------------------------
	|15 |14 |13 |12 |11 |10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
	|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
	|A7 |A6 |A5 |A4 |A3 |A2 |A1 |A0 |D7 |D6 |D5 |D4 |D3 |D2 |D1 |D0 |
	------------------------------------------------------------=====
	                                                              |
	First register to be moved------------------------------------'

SIZE
	0->16 bits.
	1->32 bits.

REGISTER
	<ea> specifies memory address of move.

	Move from registers to memory, addressing modes allowed are:
	--------------------------------- -------------------------------
	|Addressing Mode|Mode| Register | |Addressing Mode|Mode|Register|
	|-------------------------------| |-----------------------------|
	|      Dn       | -  |    -     | |    Abs.W      |111 |  000   |
	|-------------------------------| |-----------------------------|
	|      An       | -  |    -     | |    Abs.L      |111 |  001   |
	|-------------------------------| |-----------------------------|
	|     (An)      |010 |N reg. An| |   (d16,PC)    | -  |   -    |
	|-------------------------------| |-----------------------------|
	|     (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|
	---------------------------------

	Move from memory to registers, addressing modes allowed are:
	--------------------------------- -------------------------------
	|Addressing Mode|Mode| Register | |Addressing Mode|Mode|Register|
	|-------------------------------| |-----------------------------|
	|      Dn       | -  |    -     | |    Abs.W      |111 |  000   |
	|-------------------------------| |-----------------------------|
	|      An       | -  |    -     | |    Abs.L      |111 |  001   |
	|-------------------------------| |-----------------------------|
	|     (An)      |010 |N reg. An| |   (d16,PC)    |111 |  010   |
	|-------------------------------| |-----------------------------|
	|     (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      | -  |   -    |
	|-------------------------------| -------------------------------
	|([bd,An,Xi]od) |110 |N reg. An|
	|-------------------------------|
	|([bd,An],Xi,od)|110 |N reg. An|
	---------------------------------

RESULT
	None.

SEE ALSO
	MOVE 	MOVEA	MOVEP

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