RLC
Opcode Operand
RIM
Operands
arc
not
permitted
with
the
RIM
instruction.
The
RIM
instruction
loads the dccumu!:ator with the following
information:
~~
~~
5
3
IE
2
7.5
1
0
6.5
5.5
"-v-/
~/
V
'----y----/
L L
'"Io""pl
M,,,'"
Interrupt
Enable Flag:
-Pending
Interrupts:
= pending
'------Serial
!Input Data Bit, if any
Chapter 3. Instruction
Stl
1 = masked
= enabled
The
mask
and
pending flags refer only to the RSTS.S, RST6.S, dnd RST7.S hdrdwdre
interrupts.
The
IE
flag
refers
to
the
entire
interrupt
system. Thus, the
IE
flag
is
identical
in
fur.ction and level
to
the INTE pin on the
8080. A I bit
in
this fldg indicates thdt the
entire
interrupt
system i, enabled.
~
0 0 0 0
01
Cycles:
1
Stdtes:
4
Fldgs: none
ROTATE
ACCUMULATOR
LEFT
RLC
,ets
the
Cdrry
flag equal
to
the
high-order bit
of
the
accumulator,
thus overwriting
ib
previous setting. RLC
then
rotate'>
the
contents
of
the accumuldtor
one
bit position
to
the left with the high-order bit trdnsferring
to
the low-order position
of
the
accumulator.
Opcode
Operand
RLC
Operdnds are
not
allowed with the RLC instruction.
10
0 0 0 0
Cycles:
States:
Flags:
4
CYonly
349
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