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# IBM CORPORATION
TURBO-12 286
Processor 80286
Processor Speed 8/12MHz
Chip Set Unidentified
Video Chip Set None
Maximum Onboard Memory 1MB
Maximum Video Memory None
Cache None
BIOS Unidentified
Dimensions 355mm x 304mm
I/O Options None
NPU Options 80287
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------------+----------+----------------+----------|
| Reset switch | J18 | Speaker | J25 |
|---------------------+----------+----------------+----------|
| External battery | J22 | Turbo switch | J27 |
|---------------------+----------+----------------+----------|
| Power LED & keylock | J24 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-------------------------------------+-------+--------------|
| » | Factory configured - do not | J19 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | J20 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| | Monitor type select color | J23 | Pins 2 & 3 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | Monitor type select monochrome | J23 | Pins 1 & 2 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 640KB | (9) 41256 | (9) 4164 |
|------------------+--------------------+--------------------|
| 1MB | (9) 41256 | (9) 41256 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | J26 |
|----------------------------+-------------------------------|
| 640KB | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 1MB | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION |
|------------------------------------------------------------|
| Speed | J17 |
|----------------------------+-------------------------------|
| 8MHz | Pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 12MHz | Pins 1 & 2 closed |
+------------------------------------------------------------+