Read Sharp XE-A113 (serv.man3) Service Manual online
XE-A113 (V)
HARDWARE DESCRIPTION
– 7 –
3. CPU PORT
Port
Pin No.
Pin name
Signal name
I/O
Initial value
Off mode
Function
P00
88
D0
D0
I/O
H
Out L
DATE BUS D0
P01
87
D1
D1
I/O
H
Out L
DATE BUS D1
P02
86
D2
D2
I/O
H
Out L
DATE BUS D2
P03
85
D3
D3
I/O
H
Out L
DATE BUS D3
P04
84
D4
D4
I/O
H
Out L
DATE BUS D4
P05
83
D5
D5
I/O
H
Out L
DATE BUS D5
P06
82
D6
D6
I/O
H
Out L
DATE BUS D6
P07
81
D7
D7
I/O
H
Out L
DATE BUS D7
P10
80
P10
KST0
O
L
In
KEY DISPLAY (4 TO 16)
P11
79
P11
KST1
O
L
In
KEY DISPLAY (4 TO 16)
P12
78
P12
KST2
O
L
In
KEY DISPLAY (4 TO 16)
P13
77
P13
KST3
O
L
In
KEY DISPLAY (4 TO 16)
P14
76
P14
IN2
O
L
Out L
PAPER FEED MOTOR
P15
75
P15
IN1
O
L
Out L
PAPER FEED MOTOR
P16
74
P16
ENA2
O
L
Out L
PAPER FEED MOTOR
P17
73
P17
ENA1
O
L
Out L
PAPER FEED MOTOR
P20
72
A0
A0
O
H
Out L
ADDRESS BUS A0
P21
71
A1
A1
O
H
Out L
ADDRESS BUS A1
P22
70
A2
A2
O
H
Out L
ADDRESS BUS A2
P23
69
A3
A3
O
H
Out L
ADDRESS BUS A3
P24
68
A4
A4
O
H
Out L
ADDRESS BUS A4
P25
67
A5
A5
O
H
Out L
ADDRESS BUS A5
P26
66
A6
A6
O
H
Out L
ADDRESS BUS A6
P27
65
A7
A7
O
H
Out L
ADDRESS BUS A7
P30
63
A8
A8
O
H
Out L
ADDRESS BUS A8
P31
61
A9
A9
O
H
Out L
ADDRESS BUS A9
P32
60
A10
A10
O
H
Out L
ADDRESS BUS A10
P33
59
A11
A11
O
H
Out L
ADDRESS BUS A11
P34
58
A12
A12
O
H
Out L
ADDRESS BUS A12
P35
57
A13
A13
O
H
Out L
ADDRESS BUS A13
P36
56
A14
A14
O
H
Out L
ADDRESS BUS A14
P37
55
A15
A15
O
H
Out L
ADDRESS BUS A15
P40
54
A16
A16
O
H
Out L
ADDRESS BUS A16
P41
53
A17
A17
O
H
Out L
ADDRESS BUS A17
P42
52
A18
A18
O
H
Out L
ADDRESS BUS A18
P43
51
A19
A19
O
H
Out L
ADDRESS BUS A19
P44
50
/CS0
/CS0
O
H
Out L
SEGMENT LATCH
P45
49
/CS1
(NU)
O
H
Out L
UNUSED
P46
48
/CS2
/CS2
O
H
Out H
SRAM
P47
47
/CS3
(NU)
O
L
Out L
UNUSED
P50
46
/WR
/WR
O
H
Out L
WRITE STROBE SIGNAL
P51
45
/BHE
(NU)
O
L
Out L
UNUSED
P52
44
/RD
/RD
O
H
Out L
READ STROBE SIGNAL
P53
43
BCLK
(NU)
O
L
Out L
UNUSED
P54
42
/HLDA
(NU)
O
L
Out L
UNUSED
P55
41
/HOLD
/EMP
I
-
In
P56
40
ALE
(NU)
O
L
Out L
UNUSED
P57
39
/RDY
/RDY
I
-
In
VCC PULLUP
P60
38
P60
DR1
O
L
Out L
DRAWER DRIVE SIGNAL
P61
37
P61
(NU)
O
H
Out L
UNUSED
P62
36
P62
(NU)
O
-
Out L
UNUSED
P63
35
P63
(NU)
O
H
Out L
UNUSED
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