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# UNIDENTIFIED
NEXT-286
Processor 80286
Processor Speed 12/16/20MHz
Chip Set Protech
Max. Onboard DRAM 1MB
Cache None
BIOS Unidentified
Dimensions 330mm x 218mm
I/O Options None
NPU Options 80287
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------+------------------+--------------+----------|
| Speaker | J10 (pins 1 & 2) | Reset switch | J15 |
|---------------+------------------+--------------+----------|
| Power LED | J10 (pins 3 & 4) | Reset switch | J16 |
|---------------+------------------+--------------+----------|
| Turbo switch | J11 | Turbo LED | LED |
|---------------+------------------+--------------+----------|
| Keylock | J14 | | |
|------------------------------------------------------------|
| Note: The location of jumper LED is unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper/Switch | Position |
|-------------------------------+---------------+------------|
| » | BIOS type select 27128 | J9 | pins 1 & 2 |
| | | | closed |
|---+---------------------------+---------------+------------|
| | BIOS type select 27256 | J9 | pins 2 & 3 |
| | | | closed |
|---+---------------------------+---------------+------------|
| » | I/O wait state select 0 | J12 | Closed |
| | wait states | | |
|---+---------------------------+---------------+------------|
| | I/O wait state select 1 | J12 | Open |
| | wait state | | |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | J13 | Closed |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | SW1/1 | Off |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | NPU disabled | SW1/2 | On |
|---+---------------------------+---------------+------------|
| | NPU enabled | SW1/2 | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Parity 0 | Bank 1 | Parity 1 |
|--------+------------+------------+------------+------------|
| 256KB | (18) 41256 | (2) 44256 | NONE | NONE |
|--------+------------+------------+------------+------------|
| 512KB | (18) 41256 | (2) 44256 | (18) 4164 | NONE |
|--------+------------+------------+------------+------------|
| 640KB | (18) 41256 | (2) 44256 | (18) 4464 | NONE |
|--------+------------+------------+------------+------------|
| 1MB | (18) 41256 | (2) 44256 | (18) 41256 | (2) 44256 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | SW1/3 | SW1/4 |
|--------------------+-------------------+-------------------|
| 256KB | Off | Off |
|--------------------+-------------------+-------------------|
| 512KB | Off | On |
|--------------------+-------------------+-------------------|
| 640KB | On | Off |
|--------------------+-------------------+-------------------|
| 1MB | On | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VIDEO TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | SW1/5 | SW1/6 |
|--------------------+-------------------+-------------------|
| CGA (40 x 20) | Off | On |
|--------------------+-------------------+-------------------|
| CGA (80 x 25) | On | Off |
|--------------------+-------------------+-------------------|
| EGA/VGA | On | On |
|--------------------+-------------------+-------------------|
| Monochrome | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOPPY DRIVE CONFIGURATION |
|------------------------------------------------------------|
| Type | SW1/7 | SW1/8 |
|--------------------+-------------------+-------------------|
| Drive A 5.25" | On | Off |
|--------------------+-------------------+-------------------|
| Drive B 5.25" | Off | On |
|--------------------+-------------------+-------------------|
| Drive A 3.50" | Off | On |
|--------------------+-------------------+-------------------|
| Drive B 3.50" | On | Off |
+------------------------------------------------------------+