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# PINE TECHNOLOGY
PT-309
Processor 80386SX/CX486SLC
Processor Speed 16/20/25/33MHz
Chip Set Acer
Video Chip Set None
Maximum Onboard Memory 16MB
Maximum Video Memory None
Cache None
BIOS AMI
Dimensions 220mm x 170mm
I/O Options None
NPU Options 80387SX
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+-------------------+----------|
| External battery | J4 | Turbo LED | J8/pins |
| | | | 1 & 2 |
|------------------+----------+-------------------+----------|
| Reset switch | J6 | Turbo switch | J8/pins |
| | | | 4 & 5 |
|------------------+----------+-------------------+----------|
| Speaker | J7 | Power LED & | J9 |
| | | keylock | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|------------------------------------+-------+---------------|
| » | NPU synchronous with CPU | JP2 | Pins 1 & 2 |
| | | | closed |
|---+--------------------------------+-------+---------------|
| | NPU asynchronous with CPU | JP2 | Pins 2 & 3 |
| | | | closed |
|---+--------------------------------+-------+---------------|
| » | Monitor type select color | JP4 | Pins 2 & 3 |
| | | | closed |
|---+--------------------------------+-------+---------------|
| | Monitor type select monochrome | JP4 | Pins 1 & 2 |
| | | | closed |
|---+--------------------------------+-------+---------------|
| | Parity disabled | JP6 | Closed |
|---+--------------------------------+-------+---------------|
| | Parity enabled | JP6 | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 512KB | (2) 256K x 9 | None |
|------------------+--------------------+--------------------|
| 1MB | (2) 256K x 9 | (2) 256K x 9 |
|------------------+--------------------+--------------------|
| 2MB | (2) 1M x 9 | None |
|------------------+--------------------+--------------------|
| 4MB | (2) 1M x 9 | (2) 1M x 9 |
|------------------+--------------------+--------------------|
| 8MB | (2) 4M x 9 | None |
|------------------+--------------------+--------------------|
| 16MB | (2) 4M x 9 | (2) 4M x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION |
|------------------------------------------------------------|
| Speed | JP1 | JP5 |
|------------------+--------------------+--------------------|
| 16MHz | Pins 1 & 2 closed | Pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 20MHz | Pins 2 & 3 closed | Pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 25MHz | Pins 1 & 2 closed | Pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 33MHz | Pins 2 & 3 closed | Pins 2 & 3 closed |
+------------------------------------------------------------+