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# ABC COMPUTER COMPANY, LTD.
A3263
Processor 80286
Processor Speed 25MHz
Chip Set Headland
Max. Onboard DRAM 4MB
Cache None
BIOS AMI/Eurosoft
Dimensions 219mm x 234mm
I/O Options None
NPU Options 80287
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------------+----------+----------------+----------|
| External battery | JP1 | Reset switch | JP5 |
|---------------------+----------+----------------+----------|
| Power LED & keylock | JP2 | Speaker | JP6 |
|---------------------+----------+----------------+----------|
| Turbo switch | JP4 | Turbo LED | JP7 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+---------+-----------|
| » | Monitor type select color | JP3 | Closed |
|---+----------------------------------+---------+-----------|
| | Monitor type select monochrome | JP3 | Open |
|---+----------------------------------+---------+-----------|
| » | CMOS memory normal operation | JP8 | Open |
|---+----------------------------------+---------+-----------|
| | CMOS memory clear | JP8 | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Parity | Bank 1 | Parity | Bank | Bank |
| | | (P-0) | | (P-1) | 2 | 3 |
|-------+---------+---------+---------+--------+------+------|
| 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 | (4) | (2) | NONE | NONE | NONE | (2) |
| | 44256 | 41256 | | | | 256K |
| | | | | | | x 9 |
|-------+---------+---------+---------+--------+------+------|
| 1MB | NONE | NONE | NONE | NONE | (2) | (2) |
| | | | | | 256K | 256K |
| | | | | | x 9 | x 9 |
|-------+---------+---------+---------+--------+------+------|
| 2MB | (4) | (2) | NONE | NONE | NONE | NONE |
| | 441000 | 411000 | | | | |
|-------+---------+---------+---------+--------+------+------|
| 2MB | NONE | NONE | NONE | NONE | (2) | NONE |
| | | | | | 1M x | |
| | | | | | 9 | |
|-------+---------+---------+---------+--------+------+------|
| 2.5MB | (4) | (2) | (4) | (2) | NONE | NONE |
| | 44256 | 41256 | 441000 | 411000 | | |
|-------+---------+---------+---------+--------+------+------|
| 2.5MB | (4) | (2) | NONE | NONE | NONE | (2) |
| | 44256 | 41256 | | | | 1M x |
| | | | | | | 9 |
|-------+---------+---------+---------+--------+------+------|
| 2.5MB | NONE | NONE | NONE | NONE | (2) | (2) |
| | | | | | 256K | 1M x |
| | | | | | x 9 | 9 |
|-------+---------+---------+---------+--------+------+------|
| 4MB | (4) | (2) | (4) | (2) | NONE | NONE |
| | 441000 | 411000 | 441000 | 411000 | | |
|-------+---------+---------+---------+--------+------+------|
| 4MB | (4) | (2) | NONE | NONE | NONE | (2) |
| | 441000 | 411000 | | | | 1M x |
| | | | | | | 9 |
|-------+---------+---------+---------+--------+------+------|
| 4MB | NONE | NONE | NONE | NONE | (2) | (2) |
| | | | | | 1M x | 1M x |
| | | | | | 9 | 9 |
+------------------------------------------------------------+