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# ZENITH DATA SYSTEMS
Z-286LP
Processor 80286
Processor Speed 8MHz
Chip Set Unidentified
Video Chip Set None
Maximum Onboard 6MB
Memory
Maximum Video None
Memory
Cache None
BIOS Unidentified
Dimensions 330mm x 218mm
I/O Options Parallel port, serial ports (2), riser
slot
NPU Options 80287
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| Parallel port | CN1 | Serial port 1 | CN3 |
|-------------------+----------+------------------+----------|
| Serial port 2 | CN2 | Riser slot | SL1 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-------------------------------------+-----------+----------|
| » | Factory configured - do not | J504/pins | Closed |
| | alter (1 I/O card installed) | 1 & 2 | |
|---+---------------------------------+-----------+----------|
| » | Factory configured - do not | J504/pins | Closed |
| | alter (IBM printer | 9 & 10 | |
| | compatibility) | | |
|---+---------------------------------+-----------+----------|
| | Monitor type select color | J510/pins | Closed |
| | | 1 & 2 | |
|---+---------------------------------+-----------+----------|
| | Monitor type select monochrome | J510/pins | Open |
| | | 1 & 2 | |
|---+---------------------------------+-----------+----------|
| » | Factory configured - do not | J510/pins | Closed |
| | alter (SCP enabled) | 3 & 4 | |
|---+---------------------------------+-----------+----------|
| » | Factory configured - do not | J510/pins | Closed |
| | alter (NPU duty cycle) | 9 & 10 | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|------------+---------------+---------------+---------------|
| 1MB | (2) 256K x 9 | (2) 256K x 9 | None |
|------------+---------------+---------------+---------------|
| 2MB | (2) 1M x 9 | (2) 1M x 9 | None |
|------------+---------------+---------------+---------------|
| 3MB | (2) 256K x 9 | (2) 256K x 9 | (2) 1M x 9 |
|------------+---------------+---------------+---------------|
| 6MB | (2) 1M x 9 | (2) 1M x 9 | (2) 1M x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | J516 |
|----------------------------+-------------------------------|
| 1MB | Pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 2MB | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 3MB | Pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 6MB | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| NPU SPEED SELECTION |
|------------------------------------------------------------|
| Speed | Oscillator | J505 |
|------------------+--------------------+--------------------|
| 5MHz | 16MHz | Pins 7 & 8 closed |
|------------------+--------------------+--------------------|
| 5MHz | 14MHz | Pins 9 & 10 closed |
|------------------+--------------------+--------------------|
| 8MHz | 24MHz | Pins 5 & 6 closed |
|------------------+--------------------+--------------------|
| 8MHz | 16MHz | Pins 7 & 8 closed |
|------------------+--------------------+--------------------|
| 10MHz | 30MHz | Pins 3 & 4 closed |
|------------------+--------------------+--------------------|
| 10MHz | 20MHz | Pins 3 & 4 closed |
|------------------+--------------------+--------------------|
| 10MHz | 24MHz | Pins 5 & 6 closed |
|------------------+--------------------+--------------------|
| 12MHz | 24MHz | Pins 5 & 6 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PARALLEL PORT SELECTION |
|------------------------------------------------------------|
| Setting | J501 | J502 | J503 | J506 | J511 | J512 |
|------------+-------+-------+-------+-------+-------+-------|
| Parallel | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
| port | | | | | | |
|------------+-------+-------+-------+-------+-------+-------|
| Page | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
| scanner | | | | | | |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| KEYBOARD SELECTION |
|------------------------------------------------------------|
| Setting | J510/pins 5 & 6 | J510/pins 7 & 8 |
|------------------+--------------------+--------------------|
| XT | Closed | N/A |
|------------------+--------------------+--------------------|
| AT | N/A | Open |
+------------------------------------------------------------+