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# UNIDENTIFIED
BIAT-12/BIAT-16/BIAT-20/BIAT-24
Processor 80286
Processor Speed 12/16/20/24MHz
Chip Set C & T NEAT
Max. Onboard DRAM 4MB
Cache None
BIOS Phoenix
Dimensions 330mm x 218mm
I/O Options None
NPU Options 80287
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|----------------+----------+---------------------+----------|
| Turbo switch | J2 | Speaker | J6 |
|----------------+----------+---------------------+----------|
| Turbo LED | J3 | Power LED & keylock | J7 |
|----------------+----------+---------------------+----------|
| Reset switch | J4 | External battery | J26 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Monitor type select color | J5 | Closed |
|---+----------------------------------+--------+------------|
| | Monitor type select monochrome | J5 | Open |
|---+----------------------------------+--------+------------|
| » | BIOS type select 27256 | J8 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | BIOS type select 27128 | J8 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | I/O bus select 0 wait states | JP1 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | I/O bus select 1 wait state | JP1 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | NPU mode select synchronous with | JP2 | pins 1 & 2 |
| | CPU | | closed |
|---+----------------------------------+--------+------------|
| | NPU mode select synchronous with | JP2 | pins 2 & 3 |
| | oscillator at OSC1 | | closed |
|---+----------------------------------+--------+------------|
| » | Keyboard controller set on pin | JP3 | pins 1 & 2 |
| | 23 | | closed |
|---+----------------------------------+--------+------------|
| | Keyboard controller set on pin | JP3 | pins 3 & 4 |
| | 27 | | closed |
|---+----------------------------------+--------+------------|
| | Keyboard controller set on pin | JP3 | pins 5 & 6 |
| | 30 | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 512KB | (18) 41256 | NONE |
|------------------+--------------------+--------------------|
| 640KB | (18) 41259 | (18) 4164 |
|------------------+--------------------+--------------------|
| 1MB | (18) 41256 | (18) 41256 |
|------------------+--------------------+--------------------|
| 2MB | (18) 411000 | NONE |
|------------------+--------------------+--------------------|
| 4MB | (18) 411000 | (18) 411000 |
+------------------------------------------------------------+