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# UNIDENTIFIED
AT-386
Processor 80386
Processor Speed 25MHz
Chip Set VLSI
Video Chip Set None
Maximum Onboard Memory 8MB
Maximum Video Memory None
Cache None
BIOS AMI
Dimensions 330mm x 218mm
I/O Options None
NPU Options 80287/80387/3167
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| Power LED & | J1 | Reset switch | J13 |
| keylock | | | |
|-------------------+----------+------------------+----------|
| Speaker | J2 | External battery | J14 |
|-------------------+----------+------------------+----------|
| MIPS counter | J3 | On board LED | J15 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-------------------------------------+-------+--------------|
| » | Factory configured - do not | J4 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| | 80287 enabled | J5 | Closed |
|---+---------------------------------+-------+--------------|
| | 80287 disabled | J5 | Open |
|---+---------------------------------+-------+--------------|
| » | CMOS memory normal operation | J6 | Pins 1 & 2 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | CMOS memory clear | J6 | Pins 2 & 3 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | Monitor type select color | J11 | Closed |
|---+---------------------------------+-------+--------------|
| | Monitor type select monochrome | J11 | Open |
|---+---------------------------------+-------+--------------|
| | Reset valid after keyboard is | J12 | Pins 1 & 2 |
| | locked | | closed |
|---+---------------------------------+-------+--------------|
| | Reset valid at all times | J12 | Pins 2 & 3 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|-------+-------------+------------+------------+------------|
| 512MB | (2) 256K x | None | None | None |
| | 9 | | | |
|-------+-------------+------------+------------+------------|
| 1MB | (2) 256K x | (2) 256K x | None | None |
| | 9 | 9 | | |
|-------+-------------+------------+------------+------------|
| 1.5MB | (2) 256K x | (2) 256K x | (2) 256K x | None |
| | 9 | 9 | 9 | |
|-------+-------------+------------+------------+------------|
| 2MB | (2) 256K x | (2) 256K x | (2) 256K x | (2) 256K x |
| | 9 | 9 | 9 | 9 |
|-------+-------------+------------+------------+------------|
| 2MB | (2) 1M x 9 | None | None | None |
|-------+-------------+------------+------------+------------|
| 4MB | (2) 1M x 9 | (2) 1M x 9 | None | None |
|-------+-------------+------------+------------+------------|
| 6MB | (2) 1M x 9 | (2) 1M x 9 | (2) 1M x 9 | None |
|-------+-------------+------------+------------+------------|
| 8MB | (2) 1M x 9 | (2) 1M x 9 | (2) 1M x 9 | (2) 1M x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| NPU SPEED SELECTION |
|------------------------------------------------------------|
| Speed | J7 | J8 |
|------------------+--------------------+--------------------|
| Low speed | Pins 1 & 2 closed | Pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 10MHz | Pins 2 & 3 closed | Pins 1 & 2 closed |
+------------------------------------------------------------+