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# UNIDENTIFIED
MAT 286 MICRO AT (BA15D)
Processor 80286
Processor Speed 16/20MHz
Chip Set None
Max. Onboard DRAM 4MB
Cache None
BIOS Quadtel
Dimensions 220mm x 220mm
I/O Options None
NPU Options 80287
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+-------------------+----------|
| External battery | JP3 | Power LED & | JP9 |
| | | keylock | |
|------------------+----------+-------------------+----------|
| Turbo switch | JP7 | Speaker | JP10 |
|------------------+----------+-------------------+----------|
| Reset switch | JP8 | Turbo LED | JP11 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Turbo switch default high speed | JP1 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Turbo switch default low speed | JP1 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Monitor type select color | JP2 | Closed |
|---+----------------------------------+--------+------------|
| | Monitor type select monochrome | JP2 | Open |
|---+----------------------------------+--------+------------|
| » | ATCLK source select crystal Y3/4 | JP12 | Closed |
|---+----------------------------------+--------+------------|
| | ATCLK source select crystal Y2/4 | JP12 | Open |
|---+----------------------------------+--------+------------|
| » | NPU clock source select crystal | JP13 | pins 1 & 2 |
| | Y3/3 | | closed |
|---+----------------------------------+--------+------------|
| | NPU clock source select crystal | JP13 | pins 2 & 3 |
| | Y4/3 | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|-------+------------+------------+-------------+------------|
| 512KB | (4) 44256 | NONE | NONE | NONE |
|-------+------------+------------+-------------+------------|
| 512KB | NONE | NONE | (2) 256K x | NONE |
| | | | 9 | |
|-------+------------+------------+-------------+------------|
| 640KB | (4) 44256 | (4) 4464 | NONE | NONE |
|-------+------------+------------+-------------+------------|
| 1MB | (4) 44256 | (4) 44256 | NONE | NONE |
|-------+------------+------------+-------------+------------|
| 2MB | NONE | NONE | (2) 1M x 9 | NONE |
|-------+------------+------------+-------------+------------|
| 2MB | (4) 441000 | NONE | NONE | NONE |
|-------+------------+------------+-------------+------------|
| 2.5MB | (4) 44256 | (4) 441000 | NONE | NONE |
|-------+------------+------------+-------------+------------|
| 2.5MB | (4) 44256 | NONE | (2) 1M x 9 | NONE |
|-------+------------+------------+-------------+------------|
| 4MB | (4) 441000 | (4) 441000 | NONE | NONE |
|-------+------------+------------+-------------+------------|
| 4MB | NONE | NONE | (2) 1M x 9 | (2) 1M x 9 |
+------------------------------------------------------------+