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# UNIDENTIFIED
EAT-12
Processor 80286
Processor Speed 12MHz
Chip Set None
Max. onboard DRAM 2MB
Cache None
BIOS Unknown
Dimensions 330mm x 218mm
I/O Options None
NPU Options 80287
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------------+----------+----------------+----------|
| Turbo LED | JP1 | Reset | JP10 |
|---------------------+----------+----------------+----------|
| Power LED & keylock | JP4 | Turbo switch | JP12 |
|---------------------+----------+----------------+----------|
| External battery | JP8 | Speaker | JP13 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper/Switch | Position |
|-------------------------------+---------------+------------|
| » | BIOS type select 27256 | JP2 | pins 1 & 2 |
| | | | closed |
|---+---------------------------+---------------+------------|
| | BIOS type select 27128 | JP2 | pins 2 & 3 |
| | | | closed |
|---+---------------------------+---------------+------------|
| » | Monitor type select color | JP3 | pins 2 & 3 |
| | | | closed |
|---+---------------------------+---------------+------------|
| | Monitor type select | JP3 | pins 1 & 2 |
| | monochrome | | closed |
|---+---------------------------+---------------+------------|
| » | Speed select via keyboard | JP5 | pins 1 & 2 |
| | enabled | | closed |
|---+---------------------------+---------------+------------|
| | Speed select via keyboard | JP5 | pins 2 & 3 |
| | disabled | | closed |
|---+---------------------------+---------------+------------|
| » | Battery type select | JP7 | pins 2 & 3 |
| | onboard | | closed |
|---+---------------------------+---------------+------------|
| | Battery type select | JP7 | pins 1 & 2 |
| | external | | closed |
|---+---------------------------+---------------+------------|
| » | Power good signal detect | JP9 | pins 1 & 2 |
| | from board | | closed |
|---+---------------------------+---------------+------------|
| | Power good signal detect | JP9 | pins 2 & 3 |
| | from power supply | | closed |
|---+---------------------------+---------------+------------|
| » | Parity check disabled | JP14 | pins 2 & 3 |
| | | | closed |
|---+---------------------------+---------------+------------|
| | Parity check enabled | JP14 | pins 1 & 2 |
| | | | closed |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | SW1/switch 3 | Off |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | RAM select 0 wait states | SW1/switch 4 | Off |
|---+---------------------------+---------------+------------|
| | RAM select 1 wait state | SW1/switch 4 | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|---------+------------+------------+------------+-----------|
| 512KB | (4) 44256 | NONE | NONE | NONE |
|---------+------------+------------+------------+-----------|
| 640KB | (4) 44256 | (4) 4464 | NONE | NONE |
|---------+------------+------------+------------+-----------|
| 1024KB | (4) 44256 | (4) 44256 | NONE | NONE |
|---------+------------+------------+------------+-----------|
| 1152KB | (4) 44256 | (4) 44256 | (4) 4464 | NONE |
|---------+------------+------------+------------+-----------|
| 1536KB | (4) 44256 | (4) 44256 | (4) 44256 | NONE |
|---------+------------+------------+------------+-----------|
| 1664KB | (4) 44256 | (4) 44256 | (4) 44256 | (4) 4464 |
|---------+------------+------------+------------+-----------|
| 2048KB | (4) 44256 | (4) 44256 | (4) 44256 | (4) 44256 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM SWITCH CONFIGURATION |
|------------------------------------------------------------|
| Size | System RAM | Extended RAM | SW1/1 | SW1/2 |
|-----------+------------+--------------+----------+---------|
| 512KB | 512KB | 0KB | On | On |
|-----------+------------+--------------+----------+---------|
| 640KB | 640KB | 0KB | On | Off |
|-----------+------------+--------------+----------+---------|
| 1024KB | 640KB | 384KB | On | Off |
|-----------+------------+--------------+----------+---------|
| 1152KB | 640KB | 512KB | Off | On |
|-----------+------------+--------------+----------+---------|
| 1536KB | 640KB | 896KB | Off | On |
|-----------+------------+--------------+----------+---------|
| 1664KB | 640KB | 1024KB | Off | Off |
|-----------+------------+--------------+----------+---------|
| 2048KB | 640KB | 1408KB | Off | Off |
+------------------------------------------------------------+