ChdlJlCr 3.
Instructi"n
Set
NOP
ORA
3-38
Move
Immediate
to
Memory
Opcode Operand
MVI
M,data
This instruction copies the data stored
in
its second byte
into
the memory location addressed
by
Hand
L. M
is
a symbolic reference to the
Hand
L register pair.
Examples:
~_·1
__
0
_----;0
C data
Cycles:
S ta
tes:
Addrcs,ing:
Flag,:
3
10
immedia te/register indirect
none
The following examples show
a number
of
methods for defining immediate data
in
the
MVI
instruction.
All
of
the
examples generate the bit pattern for the ASCII character
A.
MVI
MVI
MVI
MVI
MVI
MVI
M,01000001 B
M,'A'
M,41H
M,101Q
M,65
M,5+30*2
NO
OPERATION
NOP performs no operation and affeels none
of
the condition flags. NOP
is
useful as filler
in
a timing loop.
Opcode Operand
NOP
Operands are
not permitted with the NOP instruction.
INCLUSIVE
OR
WITH
ACCUMULATOR
ORA performs an inclusive OR logical operation using the content<;
of
the specified byte and the accumulator. The
result
is
placed
in
the accumulator.
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