1
2
3
4
5
6
7
8
A
B
C
D
8
7
6
5
4
3
2
1
D
C
B
A
3
Jands Electronics P/L
40 Kent Rd
Mascot NSW 2020
Australia
Ph (02) 9582-0909
3
0
9-Jul-1999
16:37:12
H:\LAB\EVENT4\CIRCUIT\Ev4cpu1.sc3
Title
Size:
Number:
Date:
File:
Revision:
Sheet
o
f
Time:
A2
Event4 CPU Card
Ev4CPU1.SC3
Drawn By:
12
13
IC35F
74HC14
R62
10R
C13
100nF
R63
150R
R64
150R
C31
1uF
C14
100nF
C22
10uF
R58
47R
VCC
R70
150R
D8
BAV103
3
2
1
IC56
LM334
C34
220pF 1206
C35
220pF 1206
R71
47R
R72
47R
R59
47R
C23
10uF
C15
100nF
VCC
R73
1R
R74
1R
C32
1uF
R65
150R
R66
150R
C16
100nF
VCC
D0
1
D1
2
WE
3
RAS
4
5
A0
6
A1
7
A2
8
A3
9
A4
11
A5
12
A6
13
A7
14
A8
15
OE
16
CAS
17
D2
18
D3
19
IC57
414256
D0
1
D1
2
WE
3
RAS
4
5
A0
6
A1
7
A2
8
A3
9
A4
11
A5
12
A6
13
A7
14
A8
15
OE
16
CAS
17
D2
18
D3
19
IC58
414256
D0
1
D1
2
WE
3
RAS
4
5
A0
6
A1
7
A2
8
A3
9
A4
11
A5
12
A6
13
A7
14
A8
15
OE
16
CAS
17
D2
18
D3
19
IC59
414256
D0
1
D1
2
WE
3
RAS
4
5
A0
6
A1
7
A2
8
A3
9
A4
11
A5
12
A6
13
A7
14
A8
15
OE
16
CAS
17
D2
18
D3
19
IC60
414256
VDD1
1
EROM
2
SD15
3
SD14
4
SD13
5
SD12
6
VSS1
7
SD11
8
SD10
9
SD9
10
SD8
11
VSS2
12
MEMW
13
MEMR
14
LA17
15
LA18
16
LA19
17
LA20
18
LA21
19
LA22
20
LA23
21
IOCS16
22
MCS16
23
SHBE
24
BALE
25
VDD2
26
SA0
27
SA1
28
SA2
29
SA3
30
SA4
31
SA5
32
SA6
33
SA7
34
SA8
35
SA9
36
SA10
37
SA11
38
SA12
39
VSS3
40
RESET
41
SA13
42
SA14
43
SA15
44
SA16
45
AEN
46
IOCHRD
47
REFRESH
48
IOR
49
IOW
50
0WS
51
IRQ
52
VSS4
53
SD0
54
SD1
55
SD2
56
SD3
57
VDD3
58
SD4
59
SD5
60
VSS5
61
SD6
62
SD7
63
AVSS1
64
VFILTR
65
AVDD1
66
TWR
67
VSYNC
68
HSYNC
69
AVSS2
70
OVRW
71
AVDD2
72
EED1
73
EECS
74
BLUE
75
GREEN
76
RED
77
IREF
78
P0
79
VSS4
80
VDD4
81
P1
82
P2
83
P3
84
AVDD3
85
P4
86
P5
87
P6
88
P7
89
AVSSS3
90
VSS7
91
DCLK
92
BLANK
93
EVIDEO
94
ESYNC
95
EDCLK
96
MD31
97
MD30
98
MD29
99
MD28
100
VSS8
101
MD27
102
MD26
103
MD25
104
MD24
105
WE3
106
MD23
108
MD22
109
MD21
110
MD20
111
MD19
112
MD18
113
MD17
114
MD16
115
WE2
116
MD15
117
MD14
118
MD13
119
VSS9
120
VDD6
121
MD12
122
MD11
123
MD10
124
MD9
125
MD8
126
WE1
127
VSS10
128
MD7
129
MD6
130
MD5
131
MD4
132
MD3
133
MD2
134
MD1
135
MD0
136
VSS11
137
WE0
138
CAS
139
VDD7
140
OE
141
RAS
142
MA9
143
VSS12
144
MA8
145
MA7
146
MA6
147
MA5
148
MA4
149
MA3
150
MA2
151
MA1
152
MA0
153
AVDD4
154
MFILTR
155
AVSS4
156
MCLK
157
XTAL
158
OSC
159
VSS13
160
VDD5
107
IC65
GD5429
C36
10pF
R67
150R
R68
150R
R69
150R
C37
10pF
C38
10pF
C17
100nF
C24
10uF
C33
1uF
C18
100nF
R75
10R
R76
10R
Video
1
GND
2
Vcc
4
OUT
3
IC66
14.31818MHz
MD16
MD17
MD18
MD19
MD20
MD21
MD22
MD23
MD24
MD25
MD26
MD27
MD28
MD29
MD30
MD31
MA0
MA1
MA2
MA3
MA4
MA5
MA6
MA7
MA8
MA0
MA1
MA2
MA3
MA4
MA5
MA6
MA7
MA8
MA0
MA1
MA2
MA3
MA4
MA5
MA6
MA7
MA8
MA0
MA1
MA2
MA3
MA4
MA5
MA6
MA7
MA8
MD16
MD17
MD18
MD19
MD20
MD21
MD22
MD23
MD24
MD25
MD26
MD27
MD28
MD29
MD30
MD31
D24
D25
D26
D27
D28
D29
D30
D31
A0
A1
A2
A3
A4
A5
A6
A7
A8
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A(0..31)
D(0..31)
ALE
MEMWR
MEMRD
RSTDRV
IOCHRDY
IOWR
IORD
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
CONN11
VGACONN
MA0
MA1
MA2
MA3
MA4
MA5
MA6
MA7
MA8
C40
100nF
VCC
C41
100nF
VCC
C42
100nF
VCC
C43
100nF
VCC
C44
100nF
VCC
C46
100nF
VCC
C56
100nF
VCC
C57
100nF
VCC
C58
100nF
VCC
C59
100nF
VCC
C60
100nF
VCC
C61
100nF
VCC
C62
100nF
VCC
C63
100nF
VCC
C64
100nF
VCC
C65
100nF
VCC
C66
100nF
VCC
C68
100nF
VCC
C69
100nF
VCC
C70
100nF
VCC
C71
100nF
VCC
C72
100nF
VCC
C73
100nF
VCC
C74
100nF
VCC
C75
100nF
VCC
C76
100nF
VCC
C77
100nF
VCC
C78
100nF
VCC
C79
100nF
VCC
C80
100nF
VCC
C81
100nF
VCC
C82
100nF
VCC
C83
100nF
VCC
C84
100nF
VCC
C85
100nF
VCC
C86
100nF
VCC
C87
100nF
VCC
C88
100nF
VCC
C89
100nF
VCC
C90
100nF
VCC
C91
100nF
VCC
C92
100nF
VCC
C93
100nF
VCC
C94
100nF
VCC
C95
100nF
VCC
C96
100nF
VCC
C97
100nF
VCC
C98
100nF
VCC
C99
100nF
VCC
C100
100nF
VCC
C101
100nF
VCC
C102
100nF
VCC
C103
100nF
VCC
C104
100nF
VCC
C105
100nF
VCC
GND
1
D0
2
D1
3
D2
5
D3
6
D4
8
D5
9
D6
11
D7
12
VCC
13
RW
14
ALE
15
VCC
16
DS
17
MUX
18
-12
19
+12
20
GND
4
GND
7
GND
10
CONN4
20WAYIDC
R95
150R
C120
10nF
R96
150R
C121
10nF
R97
150R
C122
10nF
R98
150R
C123
10nF
R99
150R
C124
10nF
R100
150R
C125
10nF
R101
150R
C126
10nF
R102
150R
C127
10nF
R103
150R
C128
10nF
R104
150R
C129
10nF
R105
150R
C130
10nF
R106
150R
C131
10nF
F1
BEAD
F3
BEAD
F4
BEAD
F2
BEAD
VCC
+12
-12
C139
100nF
VCC
C140
100nF
VCC
C141
100nF
VCC
C142
100nF
VCC
VA9
C151
100nF
-12
C143
100nF
VCC
C150
10uF
-12
C152
100nF
+12
C153
10uF
+12
C145
10uF
-12
C147
10uF
+12
C148
100nF
+12
C144
220uF
VCC
C149
100nF
VCC
C154
100nF
VCC
C146
100nF
-12
R118
2R7
R117
2R7
R119
2R7
R17
2R7
R16
2R7
R15
2R7
Note: Either R73 OR R117, 118, 119 used
Note: Either R74 OR R15, 16, 17 used