Sharp MZ-80B Owner's Manual page 122

113
Do
19
15
Ao
Dl
D2
20
14
I
13
AI
A2
CPU
Da
DATA
BUS
D4
D5
Ds
~--
12
39
10
38
9
3
8
A a
A4
A5
PORT A
1 / 0
As
D7
2
7
A7
PORT B/ A SEL
6
18
A RDY
CONTROL/ DATA SEL
5
Z80A-PIO
16
A STB
PIO
CHIP
ENABLE
CONTROL
KilT
4
27
37
28
8o
81
lORO
36
29
82
RD
35
30
8a
31
84
+ 5V
GND
26
32
33
II
34
85
PORT B
1 / 0
8 s
87
<!:>
25
21
B RDY
INT
'NTERRUPT {
CONTROL
INT ENABLE IN
INT ENABLE OUT
17
23
24
22
B STB
FIGURE 3.0-1
PIO PIN CONFIGURATION