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# ACER, INC.
RT-286-12/16
Processor 80286
Processor Speed 12/16MHz
Chip Set Acer
Max. Onboard DRAM 6MB
Cache None
BIOS Unidentified
Dimensions 254mm x 218mm
I/O Options None
NPU Options 80287
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|----------------+----------+---------------------+----------|
| Speaker | J1 | Turbo switch | J4 |
|----------------+----------+---------------------+----------|
| Turbo LED | J2 | Power LED & keylock | J5 |
|----------------+----------+---------------------+----------|
| Reset switch | J3 | External battery | J6 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | NPU synchronous with CPU | JP1 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | NPU asynchronous with CPU | JP1 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | I/O bus speed select ATCLK | JP2 | Closed |
|---+----------------------------------+--------+------------|
| | I/O bus speed select ATCLK/2 | JP2 | Open |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP3 | Closed |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Parity enabled | JP4 | Open |
|---+----------------------------------+--------+------------|
| | Parity disabled | JP4 | Closed |
|---+----------------------------------+--------+------------|
| » | BIOS type select 27512 | JP5 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | BIOS type select 27256 | JP5 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Monitor type select monochrome | JP6 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Monitor type select color | JP6 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Battery type select internal | JP7 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Battery type select external | JP7 | pins 2 & 3 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Parity | Bank 1 | Parity | Bank 2 | Bank |
| | | 0 | | 1 | | 3 |
|-------+--------+--------+--------+--------+--------+-------|
| 512KB | NONE | NONE | NONE | NONE | (2) | NONE |
| | | | | | 256K x | |
| | | | | | 9 | |
|-------+--------+--------+--------+--------+--------+-------|
| 1MB | NONE | NONE | NONE | NONE | (2) | (2) |
| | | | | | 256K x | 256K |
| | | | | | 9 | x 9 |
|-------+--------+--------+--------+--------+--------+-------|
| 2MB | NONE | NONE | NONE | NONE | (2) 1M | NONE |
| | | | | | x 9 | |
|-------+--------+--------+--------+--------+--------+-------|
| 1MB | (4) | (2) | (4) | (2) | NONE | NONE |
| | 44256 | 41256 | 44256 | 41256 | | |
|-------+--------+--------+--------+--------+--------+-------|
| 1.5MB | (4) | (2) | (4) | (2) | (2) | NONE |
| | 44256 | 41256 | 44256 | 41256 | 256K 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 |
+------------------------------------------------------------+