Sharp MZ-80B Owner's Manual page 120
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Also See for MZ-80B:
- Owner's manual (138 pages) ,
- Reference manual (94 pages) ,
- Service manual (83 pages)
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113
Do
19
15
Ao
01
0
2
20
14
I
13
A1
A2
CPU
0
3
~--
12
A3
DATA
BUS
o.
Ds
0
6
39
10
38
9
3
8
A4
As
PORT
A
1
/
0
A6
0
7
2
7
A7
PORT
B
/
A
SEL
6
18
A ROY
CONTROL/
DATA
SEL
5
Z80A·PIO
16
A STB
PIO
CHIP ENABLE
CONTROL
Ml
4
27
37
28
8
o
81
IORQ
36
29
8
2
RD
35
30
8
3
31
8
4
+
5V
GND
26
32
33
II
34
8
5
PORT
B
1
/
0
8
6
8
7
<I>
25
21
B RD
Y
INT
INTERRUPT
{
CONTROL
INT
ENABLE
IN
INT ENABLE OUT
17
23
24
22
B STB
FIGURE 3.0-1
PIO PIN CONFIGURATION
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