Sharp MZ-80B - A.2 Technical Data of Z80 A-PIO

i\lnemonic
IN
A,(n)
IN
r,(C)
INI
INIR
1ND
INDR
OUT
(n),A
OUT
(C), r
OUT!
OTIR
OUTD
OTDR
Symbo li c
Flags
OP-Code
No.
r\o. 1\o.
of
of M
ofT
Commen. ts
Operation
c
z P/V
s
N H 76 543 210
Bytes
Cycles
Stales
A ~ (n)
•
•
•
• •
•
11 011 011 2
3
11
n to Ao - Ai
~
n
-
Ace to As- Alc.
r ~ (C)
•
t
p
t
0
0
11 101 101 2 3
12
C to Ao - A;
If r = 110 only
01 r 000
B to A, ·- A1 :,
the flag s wi ll
be aff ec t ed
CD
(HL) ~ (C)
•
t
X X
1
X
11 101 101 2 4
16 C to An - A;
B ~ B - 1
10 100 010
B to As - Alc.
HL~HL + 1
(HL) ~ (C)
•
1 X X 1 X 11 101 101 2 5
21
C to An - A;
B ~ B - 1
10 110 010
rifB • 11
B to As - Ala
HL ~ HL + 1
2 4
16
Repe at until B= O
CD
'If B- 11
(HL) <-(C)
•
t
X X 1
X
11 101 101 2 4
16
C to An - A
7
B~B -- 1
10 101 010
B to As - Al:,
HL ~ HL-1
(HL) +-(C)
•
1 X X 1 X 11 101 101 2 5
21
C to Au - A;
B~B - 1
10 111 010
'ifB • 0 B to Ax- Alc.
HL ~ HL - 1
2 4
16
Repeat until B= O •If B ~ o
(n)~A
•
• •
• • •
11 010 011 2
3
11
n to Au - A;
Ace to A x- Al'>
(C) <- r
• •
•
• •
•
II 101 101
2
3 12
C to An - A;
01 r 001
B to Ax- Ala
CD
(C)~(HL)
•
t
X X 1
X
11 101 101 2 4 16
C to Au - A;
B<-B- 1
10 100 011
B to Ax- Al:,
HL ~ HL + 1
(C) <-(HL)
•
1 X X I X 11 101 101
2
5
21 C to An - A;
B ~ B - 1
10 110 011
•If B•O
B to Ax- Ala
HL ~ HL + 1 2
4
16
Re pe at until B= O
·If BoO
CD
(C) - (HL)
•
t
X X 1 X 11 101 101 2 4
16
C to An - A;
B ~ B - 1
10 101 011 B to Ax - AL· ·
HL+-
HL-1
(C) ~ (HL)
•
1 X X
1 X 11 101 101 2 5
21
C to Ao - Ai
B ~ B - 1
10 111 011
liB • 0
B to Ax- Alc.
HL+- HL- 1
2 4
16
Re pe at unti l B= O
·If 1! - 0
Notes: (D If the result of B-1 is zero the Z flag is set, otherwise it is reset.
Flag Notation: • = flag not affected, 0 = flag reset, 1 = flag set, X= flag is unknown,
t = flag is affected according to the result of the operation.
INPUT AND OUTPUT GROUP
TABLE 4.3-11
101