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# PEAKTRON COMPUTER, INC.
PA286
Processor 80286
Processor Speed 12/16MHz
Chip Set Peaktron
Max. Onboard DRAM 4MB
Cache None
BIOS AMI
Dimensions 330mm x 220mm
I/O Options None
NPU Options 80287
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| Turbo LED | J1 | Speaker | J12 |
|-------------------+----------+------------------+----------|
| Reset switch | J2 | Turbo switch | J13 |
|-------------------+----------+------------------+----------|
| Power LED & | J9 | External battery | JP1 |
| keylock | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | NPU mode select synchronous with | J3 | pins 2 & 3 |
| | CPU | | closed |
|---+----------------------------------+--------+------------|
| | NPU mode select asynchronous | J3 | pins 1 & 2 |
| | with CPU | | closed |
|---+----------------------------------+--------+------------|
| » | Parity check enabled | J4 | Closed |
|---+----------------------------------+--------+------------|
| | Parity check disabled | J4 | Open |
|---+----------------------------------+--------+------------|
| » | Shadow BIOS ROM enabled | J5 | Open |
|---+----------------------------------+--------+------------|
| | Shadow BIOS ROM disabled | J5 | Closed |
|---+----------------------------------+--------+------------|
| » | DRAM select 0 wait states | J7 | Closed |
|---+----------------------------------+--------+------------|
| | DRAM select 1 wait state | J7 | Open |
|---+----------------------------------+--------+------------|
| » | Bus speed select ATCLK/2 | J8 | Open |
|---+----------------------------------+--------+------------|
| | Bus speed select ATCLK/3 | J8 | Closed |
|---+----------------------------------+--------+------------|
| » | CPU speed select switchable at | J14 | Open |
| | turbo switch | | |
|---+----------------------------------+--------+------------|
| | CPU speed select switchable at | J14 | pins 1 & 2 |
| | keyboard | | closed |
|---+----------------------------------+--------+------------|
| » | Monitor type select monochrome | J15 | Open |
|---+----------------------------------+--------+------------|
| | Monitor type select color | J15 | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|----------+-------------+-------------+----------+----------|
| 512KB | (4) 44256 | NONE | NONE | NONE |
|----------+-------------+-------------+----------+----------|
| 1MB | (4) 44256 | (4) 44256 | NONE | NONE |
|----------+-------------+-------------+----------+----------|
| 2MB | NONE | NONE | (16) | NONE |
| | | | 441000 | |
|----------+-------------+-------------+----------+----------|
| 4MB | NONE | NONE | (16) | (16) |
| | | | 441000 | 441000 |
|------------------------------------------------------------|
| Note: Bank 0 = U65, U69, U74, U78, Bank 1 = U39, U43, U50, |
| U54, Bank 2 = U65 - U72, U74 - U81, Bank 3 = U39 - U46, |
| U50 - U57 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM PARITY CONFIGURATION |
|------------------------------------------------------------|
| Size | U38 | U49 | U64 | U73 |
|--------+------------+------------+------------+------------|
| 512KB | NONE | NONE | (1) 41256 | (1) 41256 |
|--------+------------+------------+------------+------------|
| 1MB | (1) 41256 | (1) 41256 | (1) 41256 | (1) 41256 |
|--------+------------+------------+------------+------------|
| 2MB | NONE | NONE | (1) 411000 | (1) 411000 |
|--------+------------+------------+------------+------------|
| 4MB | (1) 411000 | (1) 411000 | (1) 411000 | (1) 411000 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | J6 | J10 |
|-------------------+-------------------+--------------------|
| 512KB | Open | pins 2 & 3 closed |
|-------------------+-------------------+--------------------|
| 1MB | Open | pins 2 & 3 closed |
|-------------------+-------------------+--------------------|
| 2MB | Closed | pins 1 & 2 closed |
|-------------------+-------------------+--------------------|
| 4MB | Closed | pins 1 & 2 closed |
+------------------------------------------------------------+