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# GIGA-BYTE TECHNOLOGY CO., LTD.
GA-386ES (25/33)
Processor 80386DX
Processor Speed 25/33MHz
Chip Set Elite
Max. Onboard DRAM 32MB
Cache 64/128KB
BIOS AMI
Dimensions 330mm x 218mm
I/O Options 32-bit external memory card slot
NPU Options 80387/3167
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+-------------------+----------|
| External battery | J4 | Power LED & | J41 |
| | | keylock | |
|------------------+----------+-------------------+----------|
| Turbo LED | J34 | Speaker | J42 |
|------------------+----------+-------------------+----------|
| Turbo switch | J39 | 32-bit external | S1 |
| | | memory card | |
|------------------+----------+-------------------+----------|
| Reset switch | J40 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|----------------------------------------+--------+----------|
| » | CMOS memory normal operation | J3 | Closed |
| | (internal battery) | | |
|---+------------------------------------+--------+----------|
| | CMOS memory normal operation | J3 | Open |
| | (external battery at J4) | | |
|---+------------------------------------+--------+----------|
| | CMOS memory clear (no external | J3 | Open |
| | battery at J4) | | |
|---+------------------------------------+--------+----------|
| » | Monitor type select color | J17 | Closed |
|---+------------------------------------+--------+----------|
| | Monitor type select monochrome | J17 | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 1MB | (4) 256K x 9 | NONE |
|------------------+--------------------+--------------------|
| 2MB | (4) 256K x 9 | (4) 256K x 9 |
|------------------+--------------------+--------------------|
| 4MB | (4) 1M x 9 | NONE |
|------------------+--------------------+--------------------|
| 5MB | (4) 1M x 9 | (4) 256K x 9 |
|------------------+--------------------+--------------------|
| 8MB | (4) 1M x 9 | (4) 1M x 9 |
|------------------+--------------------+--------------------|
| 16MB | (4) 4M x 9 | NONE |
|------------------+--------------------+--------------------|
| 17MB | (4) 4M x 9 | (4) 256K x 9 |
|------------------+--------------------+--------------------|
| 20MB | (4) 4M x 9 | (4) 1M x 9 |
|------------------+--------------------+--------------------|
| 32MB | (4) 4M x 9 | (4) 4M x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | J32 | J33 |
|--------+------------+-----------+-------------+------------|
| 64KB | (8) 8K x 8 | NONE | pins 1 & 2 | pins 1 & 2 |
| (A) | | | closed | closed |
|--------+------------+-----------+-------------+------------|
| 64KB | (4) 8K x 8 | (4) 8K x | pins 1 & 2 | pins 1 & 2 |
| (B) | | 8 | closed | closed |
|--------+------------+-----------+-------------+------------|
| 128KB | (8) 8K x 8 | (8) 8K x | pins 2 & 3 | pins 2 & 3 |
| (A) | | 8 | closed | closed |
|--------+------------+-----------+-------------+------------|
| 128KB | (4) 32K x | NONE | pins 2 & 3 | pins 2 & 3 |
| (B) | 8 | | closed | closed |
|------------------------------------------------------------|
| Note:On mainboards installed with 16 CACHE sockets, use |
| (A) settings, on mainboards installed with 8 CACHE sockets |
| use (B) settings. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | J32 | J33 |
|---------------+----------------------+---------------------|
| 64KB (A) | pins 1 & 2 closed | pins 1 & 2 closed |
|---------------+----------------------+---------------------|
| 64KB (B) | pins 1 & 2 closed | pins 1 & 2 closed |
|---------------+----------------------+---------------------|
| 128KB (A) | pins 2 & 3 closed | pins 2 & 3 closed |
|---------------+----------------------+---------------------|
| 128KB (B) | pins 2 & 3 closed | pins 2 & 3 closed |
|------------------------------------------------------------|
| Note:On mainboards installed with 16 CACHE sockets, use |
| (A) settings, on mainboards installed with 8 CACHE sockets |
| use (B) settings. |
+------------------------------------------------------------+