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Pin
I/O
Signal name
No.
104
GND
105
I
MEMW#
106
I
IOR#
107
I
IOW#
108
O
MCS16#
109
GND
110
VDD
111
I
RESETDRV
112
I
REFRESH#
113
I
IRQ3
114
I
IRQ4
115
I
IRQ9
116
I
IRQ10
117
I
IRQ11
118
I
IRQ15
119
GND
120
I/O
SD0
121
I/O
SD1
122
I/O
SD2
123
I/O
SD3
124
I/O
SD4
125
I/O
SD5
126
I/O
SD6
127
I/O
SD7
128
I
SA0
129
I
SA1
130
VDD
131
GND
132
I
SA2
133
I
SA3
134
I
SA4
135
I
SA5
136
I
SA6
137
I
SA7
138
I
SA8
139
GND
140
I
SA9
141
I
SA10
142
I
SA11
143
I
SA12
144
I
SA13
145
I
SA14
146
I
SA15
147
GND
148
I
SA16
149
I
SA17
150
I
SA18
151
I
SA19
152
I
SA20
153
I
SA21
154
I
SA22
155
I
SA23
Function
ISA MEMORY WRITE COMMAND from
CPU
ISA I/O READ COMMAND from CPU
ISA I/O WRITE COMMAND from CPU
MEMORY CHIP SELECT 16 to CPU
ISA SYSTEM RESET from CPU
ISA D-RAM REFRESH from CPU
ISA INTERRUPT REQUEST 3 from ISA
ISA INTERRUPT REQUEST 4 from ISA
ISA INTERRUPT REQUEST 9 from ISA
ISA INTERRUPT REQUEST 10 from ISA
ISA INTERRUPT REQUEST 11 from ISA
ISA INTERRUPT REQUEST 15 from ISA
ISA BUS D0
ISA BUS D1
ISA BUS D2
ISA BUS D3
ISA BUS D4
ISA BUS D5
ISA BUS D6
ISA BUS D7
ISA BUS SA0
ISA BUS SA1
ISA BUS SA2
ISA BUS SA3
ISA BUS SA4
ISA BUS SA5
ISA BUS SA6
ISA BUS SA7
ISA BUS SA8
ISA BUS SA9
ISA BUS SA10
ISA BUS SA11
ISA BUS SA12
ISA BUS SA13
ISA BUS SA14
ISA BUS SA15
ISA BUS SA16
ISA BUS SA17
ISA BUS SA18
ISA BUS SA19
ISA BUS SA20
ISA BUS SA21
ISA BUS SA22
ISA BUS SA23
Pin
I/O
No.
156
157
O
158
O
159
O
160
O
161
O
162
O
163
O
164
165
166
O
167
O
168
O
169
O
170
O
171
O
172
173
O
174
O
175
O
176
O
177
O
178
O
179
O
180
O
181
O
182
183
184
O
185
O
186
O
187
O
188
O
189
O
190
O
191
I
192
193
I
194
I
195
I
196
I
197
I
198
I
199
O
200
O
201
I
202
O
203
I
204
I
205
206
207
208
UP-5900VS CIRCUIT DESCRIPTION
5 – 46
Signal name
GND
PIRQ3
INTERRUPT REQUEST 3 to CPU
PIRQ4
INTERRUPT REQUEST 4 to CPU
PIRQ9
INTERRUPT REQUEST 8 to CPU
PIRQ10
INTERRUPT REQUEST 10 to CPU
PIRQ11
INTERRUPT REQUEST 11 to CPU
PIRQ15
INTERRUPT REQUEST 15 to CPU
PWRGD
GND
VDD
PRAS0
STD PS RAM WORD CHIP SELECT 0
PRAS1
OPT PS-RAM WORD CHIP SELECT 1
PRAS2
OPT PS RAM WORD CHIP SELECT 2
PRAS3
OPT PS RAM WORD CHIP SELECT 3
PSREF
PS RAM READ/REFRESH
BA18
BIOS ROM BASE ADDRESS 18
GND
BA8
BANK ADDRESS 8
BA7
BANK ADDRESS 7
BA6
BANK ADDRESS 6
BA5
BANK ADDRESS 5
BA4
BANK ADDRESS 4
BA3
BANK ADDRESS 3
BA2
BANK ADDRESS 2
BA1
BANK ADDRESS 1
BA0
BANK ADDRESS 0
VDD
GND
MROS#
MASK ROM CHIP SELECT
FROS0#
STD FLASH ROM CHIP SELECT
FROS1#
OPT FLASH ROM 1 CHIP SELECT
FROS2#
OPT FLASH ROM 2 CHIP SELECT
FROS3#
OPT FLASH ROM 3 CHIP SELECT
FROMRP#
FLASH ROM RESET/POWER DOWN
FROMWP#
FLASH ROM WRITE PROTECT
IS6#
FLASH ROM READY/BUSY- (FROMBY#)
GND
TEST1
TEST PIN 1
TEST2
TEST PIN 2
TEST3
TEST PIN 3
TEST4
TEST PIN 4
TEST5
TEST PIN 5
CDV
TEST PIN CDV (1:NORMAL 0:TEST)
VFDOFF#
VFD OFF
FANON
FAN ON/STANDBY INDICATOR ON-
PWRGOOD
5V POWER GOOD
PSCRO
TEST RESET OUT
PSCRI
TEST RESET IN
POFF#
ACL INPUT from PS UNIT
GND
GND
NC
NC
Function
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