ZiLOG Z80 Handbook page 281

Table C-7. Rotate and Shift Group
Flags
OpCode
No. No. No.
Symbolic /
of
of M of T
Mnemonic ration
O O pe C Z V S N H 76 543 210
Bytes Cycles States Comments
RLCA
^^ ^^ ^io
•
•
0 0 00 000 Ill
1 1 4 Rotate left circular
L` J^^^.^"
accumulator
RLA "-^"IrL_^'
t •
•
0 0 00 010 111 1
1 4 Rotate left
accumulator
RRCA
`^1_f^L`J'
t •
•
0 0
00 001 111 1 1 4 Rotate right circular
" accumulator
RRA `.^, ^^"^1:^-
i • • 0 0
00 Ott Ill 1 1
4 Rotate right
accumulator
RLC r
t 1 P 1 0 0
11 001 Ott 2 2 8 Rotate left circular
00 000 r
register r
RLC (HL)
I I P 1
0 0 11 001 Oil 2
4
15
r Reg.
00 000 110
000 B
RLC (IX+d)
t 1 P 1
0 0 11 O11 101
4
6 23
001 C
O
ixu. nx a^, UY°'
11 001 O11
Ott E E
d
100 H
00 000 110
1011 L
RLC(IY+d)
t 1 P I
0 0 Il 111 101
4 6 23
111 A
11 001 Ott
a
00 000 Ilo
RL s 11 P 1
0 0 010
Instruction format and
s s u.ix m. iv e^
states are as shown
for RLC,s. To form
new ORcode replace
RRC s
1 I
P I 0 0 001
000 of RLC,s with
shown code
RR s
11
P 1 0 0 011
SLA s I 1 P I 0 0
100
SRA s
ES^
1 I P 1
0 0 101
SRL s I t P 1
0 0 111
RLD
xc
•
I
P 1 0 0 11 101 101 2 5 18
Rotate digit left and
01 101 111
right between the
accumulator
and location (HL).
RRD
"ac I
P t 0 0
11 101 101 2 5 18 The content of the
01 100 111
upper half of the
accumulator is
unaffected
Flag Notation : = flag not affected , 0 = flag reset , l = flag set , X = flag is unknown,
I = flag is affected according to the result of the operation.
290