TEXT View Source
# UNIDENTIFIED
80286 MAIN BOARD
Processor 80286
Processor Speed 8/12/16MHz
Chip Set UMC
Max. Onboard DRAM 4MB
Cache None
BIOS AMI
Dimensions 220mm x 220mm
I/O Options None
NPU Options 80287
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------------+----------+----------------+----------|
| Turbo LED | JP1 | Reset switch | JP10 |
|---------------------+----------+----------------+----------|
| Power LED & keylock | JP4 | Turbo switch | JP12 |
|---------------------+----------+----------------+----------|
| External battery | JP8 | Speaker | JP13 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | BIOS type select 27128 | JP2 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | BIOS type select 27256 | JP2 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Monitor type select monochrome | JP3 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Monitor type select color | JP3 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Battery type select internal | JP7 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Battery type select external | JP7 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Power good signal detect from | JP9 | pins 2 & 3 |
| | board | | closed |
|---+----------------------------------+--------+------------|
| | Power good signal detect from | JP9 | pins 1 & 2 |
| | power supply | | closed |
|---+----------------------------------+--------+------------|
| » | Turbo switch disabled | JP12 | Closed |
|---+----------------------------------+--------+------------|
| | Turbo switch enabled | JP12 | Open |
|---+----------------------------------+--------+------------|
| » | Parity check disabled | JP14 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Parity check enabled | JP14 | pins 1 & 2 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (SIPP MEMORY) |
|------------------------------------------------------------|
| 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 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (DIP MEMORY) |
|------------------------------------------------------------|
| Size | Bank 0A | Parity A | Bank 1B | Parity B |
|--------+------------+------------+------------+------------|
| 512KB | (4) 44256 | (2) 41256 | NONE | NONE |
|--------+------------+------------+------------+------------|
| 640KB | (4) 44256 | (2) 41256 | (4) 4464 | (2) 4164 |
|--------+------------+------------+------------+------------|
| 1MB | (4) 44256 | (2) 41256 | (4) 44256 | (2) 41256 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (DIP & SIMM MEMORY) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank | Parity | Bank | Parity |
| | | | 0A | A | 1B | B |
|-------+---------+--------+-------+--------+-------+--------|
| 640KB | (2) | NONE | (4) | (2) | NONE | NONE |
| | 256K x | | 4464 | 4164 | | |
| | 9 | | | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM SWITCH CONFIGURATION |
|------------------------------------------------------------|
| Size | SW1/1 | SW1/2 | SW1/3 |
|---------------+--------------+--------------+--------------|
| 512KB (SIPP) | On | On | Off |
|---------------+--------------+--------------+--------------|
| 512KB (DIPP) | On | On | On |
|---------------+--------------+--------------+--------------|
| 640KB | On | Off | Off |
|---------------+--------------+--------------+--------------|
| 1MB | On | Off | On |
|---------------+--------------+--------------+--------------|
| 2MB | Off | On | On |
|---------------+--------------+--------------+--------------|
| 4MB | Off | Off | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM WAIT STATE CONFIGURATION |
|------------------------------------------------------------|
| Wait states | SW1/4 |
|-------------------------------+----------------------------|
| 0 wait states | Off |
|-------------------------------+----------------------------|
| 1 wait state | On |
+------------------------------------------------------------+