Service manual
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B
C
C – 18
Diagrams
B
SUPER I/O SMC869
REV. 2
FIG. B 17
I/O
+3VS
+3VS
+5VS
+5VS
+5VS
+3VS
CLKRUN# 8,14,16,24
IO CHRDY14 ,16
LP T S T RO B E#19,22
LPT D[0..7]19
IOR#14, 16 , 20
LPT SLCT IN#19
WG AT E# 17
LPT PE#19
RXD1 19
DIR# 17
TRK0# 17
TXD1 19
LP T INI T #19
HDS EL# 17
LP T ER RO R#19
LPT SLCT #19
INDEX# 17
CT S1# 19
AEN14
RST DRV14
PCLK_IO13
1.6M _E N# 17
RT S1# 19
SD[0..7]14,16 , 20
LPT ACK#19
LP T BU S Y #19
DISKCHG# 17
MT R0# 17
14.3M _I O 13
DCD1# 19
TC15
IO W#14,16 , 20
WDATA# 17
DRV0# 17,22
DT R1# 19
ST EP# 17
DSR1# 19
RDATA# 17
SERIRQ15 , 16 ,24
LPT AFD#19
RING 1# 19
DACK2#15
DREQ215 , 16
DACK1#15
DREQ115 , 16
DACK0#15
DREQ015 , 16
DREQ315 , 16
DACK3#15
WRPRT # 17
SA[0..18]14,16 , 20
IRT X 21
IRMO DE 21
IRRX 21
INDEX#
1.6M _E N# LPT D7
IRMO DE
DCD2#
IRRX
LPT D3
DSR2#
IRT X
RING 2#
SD6
SD4
SD3
SD5
SD2
SD1
SD7
SD0
WRPRT #
TRK0#
DISKCHG#
RDATA#
RXD2#
CST 2#
CST 2#
RT S2#
SA13
SA1
SA5
SA0
SA3
SA12
SA6
SA2
SA4
SA8
SA15
SA11
SA10
SA14
SA9
SA7
RXD2#
RING 2#
DSR2#
RT S2#
LPT D0
LPT D6
LPT D1
LPT D2
LPT D4
LPT D5
RT S2#
U24
FDC37N 869
68
67
37
64
66
63
100
69
61
62
38
17
55
2
44
26
27
28
29
30
31
32
39
40
41
46
47
48
49
51
52
53
54
33
34
13
70
79
80
78
82
86
87
89
91
90
88
14
7
8
5
6
11
10
15
12
57
58
59
60
71
72
73
74
75
45
24
23
98
93
65
83
95
4
56
92
43
42
50
9
16
18
81
84
85
99
22
96
97
94
77
76
19
20
21
35
36
1
3
25
P D1 / T RK 0#
PD2 /WRT PRT #
SIRQ
PD4 /DSKCHG#
PD3 /RDAT A#
PD5
MT R0#
PD0 /INDEX#
PD7
PD6 /MT R0#
CLK33
DRQ_D
RESET _DRV
DS0#
AEN
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
D0
D1
D2
D3
D4
D5
D6
D7
TC
DACK_B#
VCC
VCC
RT S1#
CT S1#
DSR1#
RI1#
RXD2/IRRX
T XD2/IRT X
RT S2#
DT R2#
CT S2#
DSR2#
RDATA#
WDATA#
WG AT E#
DIR#
ST EP#
TRK0#
INDEX#
DSKCHG#
WRT PRT #
SLCT /WGAT E#
PE /WRDAT A#
BUSY /MT R1#
ACK# /DS1#
SLCT IN# /ST EP#
INIT # /DIR#
ERRO R# /HDSEL#
AUT O FD# /DENSEL#
ST ROBE# /DS0#
VSS
IRT X2
IRRX2
IO CHRDY
VSS
VSS
DCD1#
A10
VSS
PWRG D/G AMECS#
ADRX# /CLKRUN#
IO W#
IOR#
DRQ_B
HDSEL#
DRVDEN1
CLK14
DT R1#
RI2#
DCD2#
DRVDEN0
DACK_D#
IRQ IN
DRQ_C
DACK_C#
TXD1
RXD1
DRQ_A
DACK_A#
IRMODE/IRR3
A11
A12
A13
A14
A15
T10
T6
T2
T4
R16
4.7 K
R210
1K
R25
4.7 K
RP2
8P 4R -4. 7K
81
72
6
5
3
4
C300
0.01UF
C39
0.01UF
C40
10UF /16 V
D7
1N41 48
12
RN2
10P8RX1K
10
9
8
7
6
1
2
3
4
5
RP23
10P 8R X4.7 K
10
9
8
7
6
1
2
3
4
5
R226
10
C314
10P F
R207
1K
HOST
PROCESSOR
INTERFACE
POWER
FLOPPY
DISK
INTERFACE
SERIAL
PORTS
INTERFACE
ALTERNATE
IR
PINS/MISC
PARALLEL
PORT
INTERFACE
GND
(1206 )