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# ABC COMPUTER COMPANY, LTD.
A3860
Processor 80386DX
Processor Speed 25/33MHz
Chip Set Intel/VLSI
Max. Onboard DRAM 40MB
Cache None
BIOS AMI
Dimensions 330.2mm x 218.4mm
I/O Options None
NPU Options 80387/3167
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------------+----------+----------------+----------|
| External battery | J6 | Turbo LED | J5 |
|---------------------+----------+----------------+----------|
| Power LED & keylock | J2 | Reset switch | J3 |
|---------------------+----------+----------------+----------|
| Speaker | J1 | Turbo switch | J4 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | NPU type select 80387 or none | E2 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | NPU type select 3167 | E2 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | NPU mode select synchronous with | E3 | Open |
| | CPU | | |
|---+----------------------------------+--------+------------|
| | NPU mode select asynchronous | E3 | Closed |
| | with CPU | | |
|---+----------------------------------+--------+------------|
| » | Pipeline mode enabled | E4 | Closed |
|---+----------------------------------+--------+------------|
| | Pipeline mode disabled | E4 | Open |
|---+----------------------------------+--------+------------|
| » | Reset enabled | E5 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Reset enabled only when keyboard | E5 | pins 1 & 2 |
| | is locked | | closed |
|---+----------------------------------+--------+------------|
| » | CMOS memory normal operation | E6 | Closed |
|---+----------------------------------+--------+------------|
| | CMOS memory clear | E6 | Open |
|---+----------------------------------+--------+------------|
| » | CMOS memory normal operation | E7 | Open |
|---+----------------------------------+--------+------------|
| | CMOS memory clear | E7 | Closed |
|---+----------------------------------+--------+------------|
| » | BIOS type select 8-bit | E8 | Closed |
|---+----------------------------------+--------+------------|
| | BIOS type select 16-bit | E8 | Open |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | E9 | Open |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Monitor type select color | E10 | Closed |
|---+----------------------------------+--------+------------|
| | Monitor type select monochrome | E10 | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
|Size |Batch | Bank 0 | Parity |Bank 1 |Parity |Bank 2|Bank 3|
| | | | (P-0) | | (P-1) | | |
|-----+------+--------+--------+-------+-------+------+------|
| 1MB | 1M | (8) | (4) | NONE | NONE | NONE | NONE |
| | | 44256 | 41256 | | | | |
|-----+------+--------+--------+-------+-------+------+------|
| 1MB | 1MS | NONE | NONE | NONE | NONE | (4) | NONE |
| | | | | | |256K x| |
| | | | | | | 9 | |
|-----+------+--------+--------+-------+-------+------+------|
| 2MB | 2M | (8) | (4) | (8) | (4) | NONE | NONE |
| | | 44256 | 41256 | 44256 | 41256 | | |
|-----+------+--------+--------+-------+-------+------+------|
| 2MB | 2MS | NONE | NONE | NONE | NONE | (4) | (4) |
| | | | | | |256K x|256K x|
| | | | | | | 9 | 9 |
|-----+------+--------+--------+-------+-------+------+------|
| 3MB | 3M | (8) | (4) | (8) | (4) | (4) | NONE |
| | | 44256 | 41256 | 44256 | 41256 |256K x| |
| | | | | | | 9 | |
|-----+------+--------+--------+-------+-------+------+------|
| 4MB | 4MK | (8) | (4) | (8) | (4) | (4) | (4) |
| | | 44256 | 41256 | 44256 | 41256 |256K x|256K x|
| | | | | | | 9 | 9 |
|-----+------+--------+--------+-------+-------+------+------|
| 4MB | 4MM | (8) | (4) | NONE | NONE | NONE | NONE |
| | | 441000 | 411000 | | | | |
|-----+------+--------+--------+-------+-------+------+------|
| 5MB | 5M | (8) | (4) | (8) | (4) | NONE | NONE |
| | | 44256 | 41256 |441000 |411000 | | |
|-----+------+--------+--------+-------+-------+------+------|
| 6MB | 6M | (8) | (4) | (8) | (4) |(4) 1M| NONE |
| | | 44256 | 41256 | 44256 | 41256 | x 9 | |
|-----+------+--------+--------+-------+-------+------+------|
| 8MB | 8M | (8) | (4) | (8) | (4) | NONE | NONE |
| | | 441000 | 411000 |441000 |411000 | | |
|-----+------+--------+--------+-------+-------+------+------|
| 8MB | 8MS | NONE | NONE | NONE | NONE |(4) 1M|(4) 1M|
| | | | | | | x 9 | x 9 |
|-----+------+--------+--------+-------+-------+------+------|
| 9MB | 9M | (8) | (4) | (8) | (4) | (4) | NONE |
| | | 441000 | 411000 |441000 |411000 |256K x| |
| | | | | | | 9 | |
|-----+------+--------+--------+-------+-------+------+------|
|10MB | 10M | (8) | (4) | (8) | (4) |(4) 1M|(4) 1M|
| | | 44256 | 41256 | 44256 | 41256 | x 9 | x 9 |
|-----+------+--------+--------+-------+-------+------+------|
|12MB | 12M | (8) | (4) | (8) | (4) |(4) 1M| NONE |
| | | 441000 | 411000 |441000 |411000 | x 9 | |
|-----+------+--------+--------+-------+-------+------+------|
|16MB | 16M | (8) | (4) | (8) | (4) |(4) 1M|(4) 1M|
| | | 441000 | 411000 |441000 |411000 | x 9 | x 9 |
|-----+------+--------+--------+-------+-------+------+------|
|16MB | 16MS | NONE | NONE | NONE | NONE |(4) 4M| NONE |
| | | | | | | x 9 | |
|-----+------+--------+--------+-------+-------+------+------|
|18MB | 18M | (8) | (4) | (8) | (4) |(4) 4M| NONE |
| | | 44256 | 41256 | 44256 | 41256 | x 9 | |
|-----+------+--------+--------+-------+-------+------+------|
|24MB | 24M | (8) | (4) | (8) | (4) |(4) 4M| NONE |
| | | 441000 | 411000 |441000 |411000 | x 9 | |
|-----+------+--------+--------+-------+-------+------+------|
|32MB | 32M | NONE | NONE | NONE | NONE |(4) 4M|(4) 4M|
| | | | | | | x 9 | x 9 |
|-----+------+--------+--------+-------+-------+------+------|
|34MB | 34M | (8) | (4) | (8) | (4) |(4) 4M|(4) 4M|
| | | 44256 | 41256 | 44256 | 41256 | x 9 | x 9 |
|-----+------+--------+--------+-------+-------+------+------|
|40MB | 40M | (8) | (4) | (8) | (4) |(4) 4M|(4) 4M|
| | | 441000 | 411000 |441000 |411000 | x 9 | x 9 |
|------------------------------------------------------------|
|Note:After installing memory, run the applicable batch file |
|on your setup disk. |
| |
|This loads the appropriate values into the chipset. |
+------------------------------------------------------------+