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# EISA TECH CORPORATION
SINGLE-CHIP 286
Processor 80286
Processor Speed 12/16MHz
Chip Set Acer
Max. Onboard DRAM 5MB
Cache None
BIOS AMI/Award
Dimensions 230mm x 215mm
I/O Options None
NPU Options 80287
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------+----------------+----------+-------------------|
| External | J1 | Turbo | J2 pins 10 & 12 & |
| battery | | switch | 14 |
|------------+----------------+----------+-------------------|
| Keylock | J2 pins 1 & 3 | Reset | J2 pins 18 & 20 |
| | | switch | |
|------------+----------------+----------+-------------------|
| Turbo LED | J2 pins 4 & 6 | Speaker | J2 pins 13 & 15 & |
| | | | 17 & 19 |
|------------+----------------+----------+-------------------|
| Power LED | J2 pins 5 & 7 | | |
| | & 9 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|-------------------------------------+--------+-------------|
| ยป | Monitor type select color | JP4 | pins 3 & 4 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| | Monitor type select monochrome | JP4 | pins 1 & 2 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| | NPX clock mode select CPU CLK/3 | JP11 | Closed |
|---+---------------------------------+--------+-------------|
| | NPX clock mode select CPU CLK/1 | JP11 | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | U25 - | U17 & | U33 - | U16 & | Bank 0 | Bank |
| | U28 | U19 | U36 | U18 | | 1 |
|-------+--------+--------+--------+--------+--------+-------|
| 512KB | (4) | (2) | NONE | NONE | NONE | NONE |
| | 44256 | 41256 | | | | |
|-------+--------+--------+--------+--------+--------+-------|
| 512KB | NONE | NONE | NONE | NONE | (2) | NONE |
| | | | | | 256K x | |
| | | | | | 9 | |
|-------+--------+--------+--------+--------+--------+-------|
| 1MB | (4) | (2) | (4) | (2) | NONE | NONE |
| | 44256 | 41256 | 44256 | 41256 | | |
|-------+--------+--------+--------+--------+--------+-------|
| 1MB | NONE | NONE | NONE | NONE | (2) | (2) |
| | | | | | 256K x | 256K |
| | | | | | 9 | x 9 |
|-------+--------+--------+--------+--------+--------+-------|
| 2MB | (4) | (2) | (4) | (2) | (2) | (2) |
| | 44256 | 41256 | 44256 | 41256 | 256K x | 256K |
| | | | | | 9 | x 9 |
|-------+--------+--------+--------+--------+--------+-------|
| 2MB | NONE | NONE | NONE | NONE | (2) 1M | NONE |
| | | | | | x 9 | |
|-------+--------+--------+--------+--------+--------+-------|
| 4MB | NONE | NONE | NONE | NONE | (2) 1M | (2) |
| | | | | | x 9 | 1M x |
| | | | | | | 9 |
|-------+--------+--------+--------+--------+--------+-------|
| 5MB | (4) | (2) | (4) | (2) | (2) 1M | (2) |
| | 44256 | 41256 | 44256 | 41256 | x 9 | 1M x |
| | | | | | | 9 |
|------------------------------------------------------------|
| Note:Either DIP (U17,U19,U25,U26,U27,U28) or SIMM may be |
| used as Bank 0. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP5 | JP6 | JP7 | JP8 | JP9 | JP10 |
|--------+--------+--------+--------+--------+-------+-------|
| 512KB | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
|--------+--------+--------+--------+--------+-------+-------|
| 512KB | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
|--------+--------+--------+--------+--------+-------+-------|
| 1MB | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
|--------+--------+--------+--------+--------+-------+-------|
| 1MB | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
|--------+--------+--------+--------+--------+-------+-------|
| 2MB | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
|--------+--------+--------+--------+--------+-------+-------|
| 2MB | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
|--------+--------+--------+--------+--------+-------+-------|
| 4MB | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
|--------+--------+--------+--------+--------+-------+-------|
| 5MB | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
|------------------------------------------------------------|
| Note:Pins designated should be in the closed position. |
+------------------------------------------------------------+