Move
(MYI) (MYe)
General Description
Format
(51)
(55)
Condition Code
Interrupt
Action
Loui~al
Instructions
•
To
process the SS
format
Move instruction,
the
source field specified by
the
second address (B
2
/D
2
)
is moved into the destination field specified by
the
first address (B1/D
1
).
This
format
is used
for
a main memory-to-main
memory move.
For
the
SI
format
Move instruction,
the
immediate byte in
the
12
field
of the instruction being executed is stored in the main memory location
specified by the first address
(BdD
1
).
I
(MVI)
92 I
12
I
Bl
I
0
7
8
15 16 19
20
31
I
(MVC)
D2 I
L
I
Bl
I
0
7 8
15 16 19 20 31 32 35
36
47
• Unchanged.
•
Address
error:
Addressing.
Protection.
Notes • 1. The bytes being moved
are
not inspected
or
changed.
2.
Processing is from left to
right
and overlapping
of
fields is permitted.
3. The second operand is not altered, unless operands overlap in
the
SS format.
4.
It
is possible to propagate one byte through
an
entire
field by having
the
first operand address specify one location to
the
right
of the
second operand address.
170
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