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+5V
PROGRAM STATIC
44
43
80C451
27
26
211
26
27
28
43
44
45
80C451 ONLY
PROCESSOR
Y264
12MHZ
C265
33PF
W475
0 OHM
EA/VP
1
X1
53
X2
52
RESET
35
INT0
38
INT1
39
T0
40
T1
41
P1.0
27
P1.1
28
P1.2
29
P1.3
30
P1.4
31
P1.5
32
P1.6
33
P1.7
34
P0.0
17
P0.1
16
P0.2
15
P0.3
14
P0.4
13
P0.5
12
P0.6
11
P0.7
10
P2.0
2
P2.1
3
P2.2
4
P2.3
5
P2.4
6
P2.5
7
P2.6
8
P2.7
9
RD
43
WR
42
PSEN
67
ALE/P
68
TXD
37
RXD
36
P4.0
26
P4.1
25
P4.2
24
P4.3
23
P4.4
22
P4.5
21
P4.6
20
P4.7
19
P5.0
44
P5.1
45
P5.2
46
P5.3
47
P5.4
48
P5.5
49
P5.6
50
P5.7
51
P6.0
59
P6.1
60
P6.2
61
P6.3
62
P6.4
63
P6.5
64
P6.6
65
P6.7
66
ODS
55
IDS
56
BFLAG
57
AFLAG
58
VCC
18
GND
54
U367
80C451
LATCH
ADC8
ADC0
ADC1
ADC2
ADC3
AC0
AC1
AC2
AC3
D1
2
Q1
19
D2
3
Q2
18
D3
4
Q3
17
D4
5
Q4
16
D5
6
Q5
15
D6
7
Q6
14
D7
8
Q7
13
D8
9
Q8
12
C
11
OC
1
U375
74HCT573
MEMORY
ADC[0..8]
ADC0
ADC1
ADC2
ADC3
AC0
AC1
AC2
AC3
AC[0..7]
A0
8
A1
7
A2
6
A3
5
A4
4
A5
3
A6
2
A7
1
A8
23
A9
22
A10
19
D0
9
D1
10
D2
11
D3
13
D4
14
D5
15
D6
16
D7
17
WE
21
CE
18
OE
20
U475
6116
A0
10
A1
9
A2
8
A3
7
A4
6
A5
5
A6
4
A7
3
A8
25
A9
24
A10
21
A11
23
A12
2
O0
11
O1
12
O2
13
O3
15
O4
16
O5
17
O6
18
O7
19
PGM
27
CE
20
OE
22
VPP
1
NC
26
U476
27C64
RAM
1
2
3
4
5
6
7
8
9
10
R370
10K
ADC0
ADC1
ADC2
ADC3
ADC0
ADC1
ADC2
ADC3
+5V
ADC4
ADC5
ADC6
ADC7
ADC8
ADC4
ADC5
ADC6
ADC7
NC
ADC4
ADC5
ADC6
ADC7
AC4
AC5
AC6
AC7
NC
NC
ADC4
ADC5
ADC6
ADC7
AC4
AC5
AC6
AC7
AC8
AC9
AC10
AC11
AC8
AC9
AC10
AC11 AC12
AC12
<16>
C264
33PF
RST
(top)
19
10
19
10 60
61
62
(PLCC BOTTOM)
B5
61
60
<21>
J515-26
J515-17
J415-45
J415-57
FIELD_1
V_SYNC
-REF_H_SYNC
BRUCH
WRO_INHB
<20>
NC
NC
NC
NC
I/CK
1
I
2
I
3
I
4
I
5
I
6
I
7
I
8
I
9
I/O
19
I/O
18
I/O
17
I/O
16
I/O
15
I/O
14
I/O
13
I/O
12
I/OE
11
U167
16V8-15
NC
NC
NC
NC
NC
NC
NCNC
NC
A5
RO_RESET
+5V
NC
<20>
A5
VRO_ONLY
VRO_BURST
DATA LATCH
+5V
<20>
J415-21
J415-19
J415-23
J515-39
J515-18
A4
<21>
V_LINESEL
RO_INHB
RO_STARTV
RO_START
/V_FOCUS
/W_FOCUS
/WLS_FIELD
WLS_LINE
WLS_FIELD
W_FOCUS
V_UNBLANK
INHIBIT_RO
V_FOCUS
V_SKIP_WRO
WLS_LINE
D1
2
Q1
19
D2
3
Q2
18
D3
4
Q3
17
D4
5
Q4
16
D5
6
Q5
15
D6
7
Q6
14
D7
8
Q7
13
D8
9
Q8
12
CLK
11
OC
1
U165
74HCT574
NC
WLS_FIELD
W_FOCUS
V_UNBLANK
VRO_INHB
VRO_START
V_FOCUS
V_SKIP_WRO
WLS_LINE
WRO_START
WRO_INHB
D4
D3
F4
G1
/WR
/RD
/LRC
IA0
ID0
ID1
ID2
ID3
ID4
<16>
NC
NC
VRO_INHB
<16>
H2
ID[0..7]
ID5
ID6
ID7
ID[0..7]
NC
<20>
A5
WRO_ONLY
WRO_BURST
R455
21.0K
+5V
C177
.1UF
C285
.1UF
+5V
+5V
C185
.1UF
C476
.1UF
C480
.1UF
C187
.1UF
+5V
+5V
+5V
+5V
SEE ELECTRICAL PARTS LIST
PARTS WITHIN BOX
HAVE BEEN CHANGED
IN REAR OF MANUAL
NC J415-55
<21>
F4
ONE-SHOT
LINESEL_RETR
NC
NC
NCNC
C455
2200PF
+5V+5V
+5V
+5V
C
X
1
4
R
X
1
5
A
1
B
2
C
L
3
Q
13
Q
4
U453A
74HC221
C
X
6
R
X
7
A
9
B
10
C
L
1
1
Q
5
Q
12
U453B
74HC221
1780R–SERIES
LINE RATE CONTROLLER <18>
PART OF A5 MICROPROCESSOR BOARD