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# UNIDENTIFIED
ALI 386 SYSTEM BOARD (3DIAD-1.1)
Processor AM386SX/80386SX/CX486DLC
Processor Speed 33/40MHz
Chip Set ALI
Max. Onboard DRAM 32MB
Cache 64/128/256KB
BIOS AMI
Dimensions 254mm x 218 mm
I/O Options None
NPU Options 80387SX/3167
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------------+----------+-------------+----------|
| Reset switch | J5 | Power LED & | J8 |
| | | keylock | |
|------------------------+----------+-------------+----------|
| Speaker | J6 | External | J4 |
| | | battery | |
|------------------------+----------+-------------+----------|
| Turbo switch/LED | J7 | | |
| connector | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Monitor type select color | JP1 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Monitor type select monochrome | JP1 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP2 | pins 2 & 3 |
| | alter | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP3 | Open |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP7 | pins 1 & 2 |
| | alter | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP8 | pins 2 & 3 |
| | alter | | closed |
|---+----------------------------------+--------+------------|
| » | NPU type select 80387 | JP9 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | NPU type select Weitek 3167 | JP9 | pins 2 & 3 |
| | | | closed |
|------------------------------------------------------------|
| Note: The locations of JP2, JP3, JP7, and JP8 are |
| unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 1MB | (4) 256K x 9 | NONE |
|------------------+--------------------+--------------------|
| 2MB | (4) 256K x 9 | (4) 256K x 9 |
|------------------+--------------------+--------------------|
| 4MB | (4) 1M x 9 | NONE |
|------------------+--------------------+--------------------|
| 8MB | (4) 1M x 9 | (4) 1M x 9 |
|------------------+--------------------+--------------------|
| 16MB | (4) 4M x 9 | NONE |
|------------------+--------------------+--------------------|
| 32MB | (4) 4M x 9 | (4) 4M x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG |
|------------+---------------+---------------+---------------|
| 64KB | (4) 8K x 8 | (4) 8K x 8 | (1) 8K x 8 |
|------------+---------------+---------------+---------------|
| 128KB | (4) 32K x 8 | NONE | (1) 8K x 8 |
|------------+---------------+---------------+---------------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP5 | JP6 |
|-------+--------------------------------+-------------------|
| 64KB | Open | pins 1 & 2 closed |
|-------+--------------------------------+-------------------|
| 128KB | pins 1 & 2, 3 & 4 closed | pins 2 & 3 closed |
|-------+--------------------------------+-------------------|
| 256KB | pins 1 & 2, 3 & 4, 5 & 6 | pins 1 & 2 closed |
| | closed | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| NPU CONFIGURATION |
|------------------------------------------------------------|
| Select | JP10 | JP11 | JP12 |
|---------------+--------------+--------------+--------------|
| Installed | Closed | Closed | Closed |
|---------------+--------------+--------------+--------------|
| Not installed | Open | Open | Open |
+------------------------------------------------------------+