A2
B2
A3
B3
A4
B4
A5
B5
A7
B7
A8
B8
A9
B9
A10
B10
A12
B12
A13
B13
A14
B14
A15
B15
A16
B16
A18
B18
A19
B19
A20
B20
A21
B21
A23
B23
A24
B24
A25
B25
A27
B27
A28
B28
A29
B29
A30
B30
A31
B31
A32
B32
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15
SWAIT
SWE
SRD
SCS
RXD1
TXD1
RA
RB
TA
TB
N2H1
N2H2
N2H3
N2H4
H2N1
H2N2
H2N3
H2N4
CN201
OPEN
IC201 GATE ARRAY
IC203 SDRAM
SPCACS (1/10)
SRSTA (3/10)
5RDWR (2/10)
LDS (2/10)
UDS (2/10)
STCLK
SPCBCS (1/10)
SRSTB (1/10)
CD0-CD15
3-6,292-295
297-302
259-264
269-274
276,277
20-26
29-35
A0-A13
DQ0-DQ15
MAL0-MAL13
MAH0-MAH13
MD16-MD31
MD0-MD15
DA0-DA15
DB0-DB15
61-65,67-72,80-84
88-92,97-109
32-35,43-56
A1-A18
7,8,15-18,21-30
D0-D15
CA0-CA17
SCA0-SCA17
SCD0-SCD15
SWAIT
SWE
SRD
SCS
RESET
MCS0
RASL
CASL
MWEL
DQM
CLK
#CS
#RAS
#CAS
#WE
DQML
DQMU
38
19
18
17
16
15
39
288
290
291
289
253
RASH
CASH
MWEH
255
258
254
SDRWA
SDDSA
SDACKA
SDREQA
SDRWB
SDDSB
IREQ
CS
WAIT
FPB
FPA
ASCKB1
VB0-VB7
VA0-VA7
ASCKB2
AALAB1
AARAB2
ASTRBB1
ASTRBB2
129
135
127
130
128
131
ASCKB2
AB1
AB2
ASTBB1
ASTBB2
122
123
124
125
CAENB
CWEB
COEB
CBSYB
149
156
150
157
155
158
AA1
AA2
ASTBA1
ASTBA2
ASCKA1
ASCKA2
144
145
146
147
CAENA
CWEA
COEA
CBSYA
AALAA1
AARAA2
ASTRBA1
ASTRBA2
ASCKA1
ASCKA2
CKI
208,211-217
220-226,231
232-237,240-245
249-252
183-188,193-199
201,202,203
159-162,164-170,173-177
DA0-DA15
DB0-DB15
DMD0-DMD15
MD0-MD15
MD16-MD31
41
RD
WE
MDAT0-MDAT15
MDAT (0-31)
MRD,MWE0,MRDWR
MCTL (20-22)
MADR (0-25)
STIRQ (1/10)
STRCS (1/10)
STWAIT (1/10)
FPIPLY (10/10)
FPIREC (10/10)
STCLK (1/10)
IC212(a) D-FF
IC212(b) D-FF
12CCLK (2/10)
STRST (3/10)
TB485 (6/10)
TA485 (6/10)
TXD1 (1/10)
RXD1 (1/10)
RA485 (6/10)
RB485 (6/10)
N2H1 (3/10)
N2H2 (3/10)
N2H3 (3/10)
N2H4 (3/10)
NICRST (3/10)
H2N2 (3/10)
H2N3 (3/10)
H2N4 (3/10)
AB (1,2), ASTBB (1,2)
ASCKB (1,2)
CAENB,CWEB,COEB,CBSYB
JCB (0-7)
CAENA,CWEA,COEA,CBSYA
JCA (0-7)
AA (1,2),ASTBA (1,2)
ASCKA (1,2)
IC827
85
86
MRD
MWE0
MADR1-MADR18
RESET
CLK
36
59
60
31
74
79
87
93
126
148
STCLK
3
4
b
IC827
1
2
a
IC827
IC210
X201
5
6
CLK1
D1
5
#Q1
Q1
2
3
2
4
c
IC213(a) D-FF
CLK1
#R1
D1
5
ASCKB1
6
#Q1
Q1
2
3
CLK2
D2
9
8
#Q2
Q2
11
6
1
RESET
JCB0-JCB7
110-112,117-121
JCA0-JCA7
136-143
VAENA
VWEA
VOEA
VBSYA
CLK
IC202 SDRAM
20-26
29-35
A0-A13
DQ0-DQ15
CLK
#CS
#RAS
#CAS
#WE
DQML
DQMU
IC301
IC341 TERMINATOR
Q341
DMD0-DMD15
51,52,55,56
19,20,22-24,26-29,32-34,36-39
51,52,55,56
19,20,22-24,26-29,32-34,36-39
#CS0
#RESET
R/#W
#LDS
#UDS
SCLK
DMR/#W
#DMLDS
#DMUDS
#DACK
DREQ
101
90
103
104
105
106
74
75
76
78
91
92
94
95
96
97
99
100
89
87
86
85
84
83
81
80
79
STANDBY
SGLINE14
SGLINE13
SGLINE12
SGLINE11
SGLINE15
SGLINE16
SGLINE17
SGLINE18
SCNTA3
SCNTA2
38
19
18
17
16
15
39
2,4,5,7,8,10,11,13
42,44,45,47,48
50,51,53
1,3-5,7,9-11,13,14
138,139,141-144
1,3-5,7,9-11,13,14
138,139,141-144
2,4,5,7,8,10,11,13
42,44,45,47,48
50,51,53
MD0-MD15
DA0-DA15
MD16-MD31
178
179
180
182
SCNTA3
SCNTA2
SCNTA1
SCNTA0
SCNTB3
SCNTB2
204
205
26
27
28
29
30
31
32
33
34
41
43
44
45
46
47
48
49
50
DBA0
DBA1
DBA2
DBA3
DBA4
DBA5
DBA6
DBA7
LDBP
SCA8
SCA7
SCA6
SCA5
SCA4
SCA3
SCA2
SCA1
SCA0
CN301
26
27
28
29
30
31
32
33
34
41
43
44
45
46
47
48
49
50
DBB0
DBB1
DBB2
DBB3
DBB4
DBB5
DBB6
DBB7
LDBP
SCB8
SCB7
SCB6
SCB5
SCB4
SCB3
SCB2
SCB1
SCB0
CN351
135
133
132
129
130
48
127
46
44
42
54
A1-A4
A1-A4
D0-D15
#UDBP
#LDBP
#DB15
#DB14
#DB13
#DB12
#DB11
#DB10
#DB9
#DB8
#DB7
#DB6
#DB5
#DB4
#DB3
#DB2
#DB1
#DB0
#ATN
#BSY
#ACK
#RST
#MSG
#SEL
#C/D
#REQ
#I/O
SCNTA1
SCNTA0
48
127
46
44
42
54
#INT
IC351
IC393
IC392
IC392
IC391
#CS0
#RESET
R/#W
#LDS
#UDS
SCLK
#INT
D0-D15
#UDBP
#LDBP
#DB15
#DB14
#DB13
#DB12
#DB11
#DB10
#DB9
#DB8
#DB7
#DB6
#DB5
#DB4
#DB3
#DB2
#DB1
#DB0
#ATN
#BSY
#ACK
#RST
#MSG
#SEL
#C/D
#REQ
#I/O
DMR/#W
#DMLDS
#DMUDS
#DACK
DREQ
135
133
132
129
130
SGLINE1
SGLINE2
SGLINE3
SGLINE4
SGLINE5
5ADR1-5ADR4
5DAT0-5DAT15
5ADR1-5ADR4
5DAT0-5DAT15
5DAT (0-15)
5DAT (0-15)
5ADR (1-21)
SPCIRQ (1/10)
TO
SCSI-IDE
BOARD
. . . . CN3
TO
EXTENSION
STORAGE
PORT
TO
COPY PORT
SIRQCS (1/10)
5RD (2/10)
TERM (6/10)
5ADR (1-21)
101
90
103
104
105
106
74
75
76
78
91
92
94
95
96
97
99
100
89
87
86
85
84
83
81
80
79
SGLINE10
SGLINE9
SGLINE8
SGLINE7
SGLINE6
DBA17
DBA16
DBA15
DBA14
DBA13
DBA12
DBA11
DBA10
DBA9
DBA8
DBA7
DBA6
DBA5
DBA4
DBA3
DBA2
DBA1
DBA0
DBB17
DBB16
DBB15
DBB14
DBB13
DBB12
DBB11
DBB10
DBB9
DBB8
DBB7
DBB6
DBB5
DBB4
DBB3
DBB2
DBB1
DBB0
SCA8
SCA7
SCA6
SCA5
SCA4
SCA3
SCA2
SCA1
SCA0
SCB8
SCB7
SCB6
SCB5
SCB4
SCB3
SCB2
SCB1
SCB0
1
5
7
8
9
10
11
SCA8
SCA7
SCA6
SCA5
SCA8
SCA7
SCA6
SCA5
SCA4
SCA3
SCA2
SCA1
SCA0
SCB8
SCB7
SCB6
SCB5
SCB4
SCB3
SCB2
SCB1
SCB0
2
3
4
23
22
21
20
DBA5
DBA6
DBA7
DBA16
18
17
16
15
14
SCA0
SCA1
SCA2
SCA3
SCA4
DBA0
DBA1
DBA2
DBA3
DBA4
DBA5
DBA6
DBA7
DBA16
DBB0
DBB1
DBB2
DBB3
DBB4
DBB5
DBB6
DBB7
DBB16
50
50
4
1
6
2
1
1
2
4
7 3
5
2
a
b
MAIN BOARD (4/10)/(5/10)
5DAT0
5DAT1
VAENB
VWEB
VOEB
VBSYB
SCNTB1
SCNTB0
206
207
SDACKB
SDREQB
BLOCK DIAGRAM OF MAIN BOARD (4/10)/(5/10)
– 18 –