Date: February 12, 1997 Sheet 12 of 25
Size Document Number REV
A3 96149 SC
Title 370P/J (||PORT,SERIAL PORT,EXT. FDD)
TAIPEI TAIWAN R.O.C
ACER
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
27
26 CN3
PRNT25-4-D
C142
SC150P
C134
SC150P
C135
SC150P
C136
SC150P
C137
SC150P
C138
SC150P
C139
SC150P
C140
SC150P
C141
SC150P
PD[0..7]
PAUTOFD#
PERROR#
PSTROB# PPD0 PAUTOFD#
PERROR#
PSTROB#
11
1111
11,14
11 11
11
VCC
24
B0
2
A0
3
A1
4B1
5
B2
6
A2
7
A3
8
B3
9
B4
10
A4
11
OEA
1
OEB
13
GND
12
B9 23
A9 22
A8 21
B8 20
B7 19
A7 18
A6 17
B6 16
B5 15
A5 14
U24
QQST3384
HDSEL
WDATA#
3_MODE
DR1#
INDEX# DSKCHG
MTR1#
FDIR
STEP#
WGATE#
EXTINDEX#
EXTDR1#
EXT3_MODE
EXTHDSEL
EXTWDATA# EXTWGATE#
EXTSTEP#
EXTFDIR
EXTMTR1#
EXTDSKCHG
FDDRDY#
+5V 11
8,14
14
14
11
11
1
2
3
4
5 6
7
8
9
10
RP21
SRP4K7
1
2
3
4
5 6
7
8
9
10
RP22
SRP4K7
123
456D7
RB731U
PPD0
PAUTOFD#
PERROR#
PINIT#
PSLCTIN#
PSLCT
PACK#
PPE
FDDCHG
FDDDCHG
+5V
1
2
3
4 5
6
7
8
RP23
SRN33
1
2
3
4 5
6
7
8
RP24
SRN33
11 10
1
4
7
U19E
SSHC14
13 12
1
4
7
U19F
SSHC14
PD0
PD1
PD2
PD3
PD4
PD5
PD6
PD7
PPD0
PPD1
PPD2
PPD3
PPD4
PPD5
PPD6
PPD7
PPD1
PPD2
PPD3
PPD4
PPD5
PPD6
PPD7
FDDDCHG
+5V +5V
11,14
VCC
24
B0
2
A0
3
A1
4
B1
5
B2
6
A2
7
A3
8
B3
9
B4
10
A4
11
OEA
1
OEB
13
GND
12
B9 23
A9 22
A8 21
B8 20
B7 19
A7 18
A6 17
B6 16
B5 15
A5 14
U1
QQST3384
GND
1
IN
2 IN
3
EN#
4
OUT 8
OUT 7
OUT 6
OUT 5
U23
TPS2013D
1
2
R115
10KR3
RDATA#
TRK0#
WRTPRT#
EXTRDATA#
EXTTRK0#
EXTWRTPRT#
FDDRDY#
+5V
+5V FDD5V
+5V
11,14 14
1 2
R114
33R3
BUSYP
PINIT#
PSLCTIN#
PACK#
PPE
PSLCT
PPD1
PPD2
PPD3
PPD4
PPD5
PPD6
PPD7
PINIT#
PSLCTIN#
PACK#
PPE
PSLCT
11
11
11
11
11
11
11
+5V
1
2
RX11
10KR3
C150
SC150P
C149
SC150P
C146
SC150P
C145
SC150P
C148
SC150P
C147
SC150P
C144
SC150P
C143
SC150P
1
2
3
4
5
6
7
8
9
11
10
CN4
RS232-9-4-D
C151
SC680P
C152
SC680P
C153
SC680P
C154
SC680P
C155
SC680P
C156
SC680P
C157
SC680P
C158
SC680P
PDCD1#
PDSR1#
PSIN1
PRTS1#
PSOUT1
PCTS1#
PDTR1#
PRI1#
11
11
11
1111
11
11
11
C8
SC10U16V
C165
SCD1U
C9
SCD1U
C10
SC680P
EXTDSKCHG
EXTMTR1#
EXTFDIR
EXTSTEP#
FDD5V
1 2
R116
100KR3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
CN5
AMP-CONN26
1 2
R21
560KR3
C172
SCD1U
EXTINDEX#
EXTDR1#
EXT3_MODE
FDDIN#
FDDCHG
FDD5V
THIS CONN. IS BUILDED BY TOP VIEW,
WE COUNT THE PINS MUST MIRROR IT.
EXT. FDD CONN.
1 2
R27
330R3
FDDIN#
EXTWDATA#
EXTRDATA#
EXTHDSEL
FDDIN#
8
## CIRCUIT MODIFY
EXTWGATE#
EXTTRK0#
EXTWRTPRT#
FDD5V
C7
SCD1U
9
10 8
1
4
7
U5C
SSHCT32
1 2
R119
100KR3
5 6
1
4
7
U38C
SSHC14
FDDRDY#
FDDIN#
+5V +5V