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# SINGA
286G
Processor 80286
Processor Speed 12MHz
Chip Set GC
Max. Onboard DRAM 8MB
Cache None
BIOS Quadtel
Dimensions 330mm x 218mm
I/O Options None
NPU Options 80287
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------------+----------+----------------+----------|
| External battery | J1 | Reset switch | JP4 |
|---------------------+----------+----------------+----------|
| Speaker | J2 | Turbo LED | JP12 |
|---------------------+----------+----------------+----------|
| Power LED & keylock | J8 | Turbo switch | JP14 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper/Switch | Position |
|-------------------------------+---------------+------------|
| » | Factory configured - do | JP1 | N/A |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | I/O wait state select one | JP5 | Open |
|---+---------------------------+---------------+------------|
| | I/O wait states select | JP5 | Closed |
| | zero | | |
|---+---------------------------+---------------+------------|
| » | NPU clock select | JP9 | pins 1 & 2 |
| | synchronous with CPU | | closed |
|---+---------------------------+---------------+------------|
| | NPU clock select | JP9 | pins 2 & 3 |
| | synchronous with OSC1 | | closed |
|---+---------------------------+---------------+------------|
| » | Monitor type select color | JP13 | Closed |
|---+---------------------------+---------------+------------|
| | Monitor type select | JP13 | Open |
| | monochrome | | |
|---+---------------------------+---------------+------------|
| » | Parity check enabled | JP19 | pins 1 & 2 |
| | | | closed |
|---+---------------------------+---------------+------------|
| | Parity check disabled | JP19 | pins 2 & 3 |
| | | | closed |
|---+---------------------------+---------------+------------|
| » | Communications port | JP20 | Closed |
| | select COM1/COM2 | | |
|---+---------------------------+---------------+------------|
| | Communications port | JP20 | Open |
| | select COM3/COM4 | | |
|---+---------------------------+---------------+------------|
| » | Enable IRQ5 for parallel | SW1/1 | On |
| | port | | |
|---+---------------------------+---------------+------------|
| | Enable IRQ7 for parallel | SW1/2 | On |
| | port | | |
|---+---------------------------+---------------+------------|
| » | Enable IRQ3 for serial | SW1/3 | On |
| | port 2 | | |
|---+---------------------------+---------------+------------|
| » | Enable IRQ4 for serial | SW1/4 | On |
| | port 1 | | |
|---+---------------------------+---------------+------------|
| » | Port select LPT1 | SW1/5 | On |
|---+---------------------------+---------------+------------|
| | Port select LPT2 | SW1/5 | Off |
|---+---------------------------+---------------+------------|
| » | Printer port 1 enabled | SW1/6 | On |
|---+---------------------------+---------------+------------|
| | Printer port 1 disabled | SW1/6 | Off |
|---+---------------------------+---------------+------------|
| » | Serial port S1 enabled | SW1/7 | On |
|---+---------------------------+---------------+------------|
| | Serial port S1 disabled | SW1/7 | Off |
|---+---------------------------+---------------+------------|
| » | Serial port S2 enabled | SW1/8 | On |
|---+---------------------------+---------------+------------|
| | Serial port S2 disabled | SW1/8 | Off |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | SW2/1 | N/A |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | Memory between 640 and | SW2/2 | On |
| | 1024KB available | | |
|---+---------------------------+---------------+------------|
| | Memory between 640 and | SW2/2 | Off |
| | 1024KB not available | | |
|---+---------------------------+---------------+------------|
| » | SIMM type at Bank 0select | SW2/3 | On |
| | 256K x 9 | | |
|---+---------------------------+---------------+------------|
| | SIMM type at Bank 0select | SW2/3 | Off |
| | 1M x 9 | | |
|---+---------------------------+---------------+------------|
| » | I/O speed select slow | SW2/6 | On |
|---+---------------------------+---------------+------------|
| | I/O speed select fast | SW2/6 | Off |
|------------------------------------------------------------|
| Note:The location of I/O ports is unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|-------+-------------+------------+------------+------------|
| 512KB | (18) 41256 | NONE | NONE | NONE |
|-------+-------------+------------+------------+------------|
| 512KB | NONE | NONE | (2) 256K x | NONE |
| | | | 9 | |
|-------+-------------+------------+------------+------------|
| 1MB | (18) 41256 | (18) 41256 | NONE | NONE |
|-------+-------------+------------+------------+------------|
| 1MB | NONE | NONE | (2) 256K x | (2) 256K x |
| | | | 9 | 9 |
|-------+-------------+------------+------------+------------|
| 1.5MB | (18) 41256 | (18) 41256 | (2) 256K x | NONE |
| | | | 9 | |
|-------+-------------+------------+------------+------------|
| 1.5MB | (18) 41256 | NONE | (2) 256K x | (2) 256K x |
| | | | 9 | 9 |
|-------+-------------+------------+------------+------------|
| 2MB | (18) 411000 | NONE | NONE | NONE |
|-------+-------------+------------+------------+------------|
| 2MB | NONE | NONE | (2) 1M x 9 | NONE |
|-------+-------------+------------+------------+------------|
| 3MB | (18) 411000 | NONE | (2) 256K x | (2) 256K x |
| | | | 9 | 9 |
|-------+-------------+------------+------------+------------|
| 4MB | (18) 411000 | (18) | (2) 1M x 9 | NONE |
| | | 411000 | | |
|-------+-------------+------------+------------+------------|
| 4MB | NONE | NONE | (2) 1M x 9 | (2) 1M x 9 |
|-------+-------------+------------+------------+------------|
| 5MB | (18) 411000 | (18) | (2) 256K x | (2) 256K x |
| | | 411000 | 9 | 9 |
|-------+-------------+------------+------------+------------|
| 5MB | (18) 41256 | (18) 41256 | (2) 1M x 9 | (2) 1M x 9 |
|-------+-------------+------------+------------+------------|
| 6MB | (18) 411000 | (18) | (2) 1M x 9 | NONE |
| | | 411000 | | |
|-------+-------------+------------+------------+------------|
| 8MB | (18) 411000 | (18) | (2) 1M x 9 | (2) 1M x 9 |
| | | 411000 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | JP15 | JP16 | JP17 | JP18 |
|-------+-------------+------------+------------+------------|
| 512KB | pins 1 & 2 | pins 2 & 3 | pins 1 & 2 | pins 2 & 3 |
| | closed | closed | closed | closed |
|-------+-------------+------------+------------+------------|
| 512KB | pins 2 & 3 | pins 1 & 2 | pins 2 & 3 | pins 1 & 2 |
| | closed | closed | closed | closed |
|-------+-------------+------------+------------+------------|
| 1MB | pins 1 & 2 | pins 2 & 3 | pins 1 & 2 | pins 2 & 3 |
| | closed | closed | closed | closed |
|-------+-------------+------------+------------+------------|
| 1MB | pins 2 & 3 | pins 1 & 2 | pins 2 & 3 | pins 1 & 2 |
| | closed | closed | closed | closed |
|-------+-------------+------------+------------+------------|
| 1.5MB | pins 1 & 2 | pins 2 & 3 | pins 1 & 2 | pins 2 & 3 |
| | closed | closed | closed | closed |
|-------+-------------+------------+------------+------------|
| 1.5MB | pins 2 & 3 | pins 1 & 2 | pins 2 & 3 | pins 1 & 2 |
| | closed | closed | closed | closed |
|-------+-------------+------------+------------+------------|
| 2MB | pins 1 & 2 | pins 2 & 3 | pins 1 & 2 | pins 2 & 3 |
| | closed | closed | closed | closed |
|-------+-------------+------------+------------+------------|
| 2MB | pins 2 & 3 | pins 1 & 2 | pins 2 & 3 | pins 1 & 2 |
| | closed | closed | closed | closed |
|-------+-------------+------------+------------+------------|
| 3MB | pins 2 & 3 | pins 1 & 2 | pins 2 & 3 | pins 1 & 2 |
| | closed | closed | closed | closed |
|-------+-------------+------------+------------+------------|
| 4MB | pins 1 & 2 | pins 2 & 3 | pins 1 & 2 | pins 2 & 3 |
| | closed | closed | closed | closed |
|-------+-------------+------------+------------+------------|
| 4MB | pins 2 & 3 | pins 1 & 2 | pins 2 & 3 | pins 1 & 2 |
| | closed | closed | closed | closed |
|-------+-------------+------------+------------+------------|
| 5MB | pins 1 & 2 | pins 2 & 3 | pins 1 & 2 | pins 2 & 3 |
| | closed | closed | closed | closed |
|-------+-------------+------------+------------+------------|
| 5MB | pins 1 & 2 | pins 2 & 3 | pins 1 & 2 | pins 2 & 3 |
| | closed | closed | closed | closed |
|-------+-------------+------------+------------+------------|
| 6MB | pins 1 & 2 | pins 2 & 3 | pins 1 & 2 | pins 2 & 3 |
| | closed | closed | closed | closed |
|-------+-------------+------------+------------+------------|
| 8MB | pins 1 & 2 | pins 2 & 3 | pins 1 & 2 | pins 2 & 3 |
| | closed | closed | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIOS CONFIGURATION |
|------------------------------------------------------------|
| Size | JP3 | JP21 |
|------------------+--------------------+--------------------|
| 27128 | pins 1 & 2 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 27256 | pins 2 & 3 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 27512 | pins 2 & 3 closed | pins 2 & 3 closed |
+------------------------------------------------------------+