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# UNIDENTIFIED
VL286-AT
Processor 80286
Processor Speed 12MHz
Chip Set Unidentified
Max. Onboard DRAM 4MB
Cache None
BIOS AMI/Award/Phoenix
Dimensions 330mm x 218mm
I/O Options None
NPU Options 80287
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------------+----------+----------------+----------|
| Speaker | J17 | Turbo switch | JP13 |
|---------------------+----------+----------------+----------|
| External battery | J18 | Reset switch | JP14 |
|---------------------+----------+----------------+----------|
| Power LED & keylock | J19 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Location |
|----------------------------------------+--------+----------|
| » | BIOS type select 27128 | JP1 | Open |
|---+------------------------------------+--------+----------|
| | BIOS type select 27256 | JP1 | Closed |
|---+------------------------------------+--------+----------|
| » | Monitor type select color | JP2 | Open |
|---+------------------------------------+--------+----------|
| | Monitor type select monochrome | JP2 | Closed |
|---+------------------------------------+--------+----------|
| » | ROM wait state select 1 | JP7 | Open |
|---+------------------------------------+--------+----------|
| | ROM wait state select 2 | JP7 | Closed |
|---+------------------------------------+--------+----------|
| » | DRAM wait states select 0 | JP8 | Closed |
|---+------------------------------------+--------+----------|
| | DRAM wait state select 1 | JP8 | Open |
|---+------------------------------------+--------+----------|
| » | Fast mode enabled | JP9 | Closed |
|---+------------------------------------+--------+----------|
| | Fast mode disabled | JP9 | Open |
|---+------------------------------------+--------+----------|
| » | CPU speed select switchable 6 or | JP15 | Open |
| | 12MHz | | |
|---+------------------------------------+--------+----------|
| | CPU speed select switchable 8 or | JP15 | Closed |
| | 12MHz | | |
|---+------------------------------------+--------+----------|
| » | Battery type select internal | J22 | Closed |
|---+------------------------------------+--------+----------|
| | Battery type select external | J22 | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 512KB | (18) 41256 | NONE |
|------------------+--------------------+--------------------|
| 640KB | (18) 41256 | (18) 4164 |
|------------------+--------------------+--------------------|
| 1MB | (18) 41256 | (18) 41256 |
|------------------+--------------------+--------------------|
| 2MB | (18) 411000 | NONE |
|------------------+--------------------+--------------------|
| 4MB | (18) 411000 | (18) 411000 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP10 | JP11 | JP12 |
|--------------+---------------+--------------+--------------|
| 512KB | Closed | Closed | Closed |
|--------------+---------------+--------------+--------------|
| 640KB | Closed | Open | Closed |
|--------------+---------------+--------------+--------------|
| 1MB | Open | Closed | Closed |
|--------------+---------------+--------------+--------------|
| 2MB | Open | Open | Closed |
|--------------+---------------+--------------+--------------|
| 4MB | Closed | Closed | Open |
+------------------------------------------------------------+