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# GIGA-BYTE TECHNOLOGY CO., LTD.
GA-486VP
Processor 80486SX/80487SX/CX486S/CX486S2/80486DX/80486DX2/Pentium
Overdrive
Processor 25/33/40/50(internal)/50/66(internal)MHz
Speed
Chip Set UMC
Max. 64MB
Onboard
DRAM
Cache 64/128/256KB
BIOS AMI
Dimensions 230mm x 218mm
I/O 32-bit VESA local bus slots (3)
Options
NPU None
Options
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+-------------------+----------|
| External battery | J2 | Power LED & | J9 |
| | | keylock | |
|------------------+----------+-------------------+----------|
| Turbo LED | J5 | 32-bit VESA Local | S1 |
| | | bus slot | |
|------------------+----------+-------------------+----------|
| Reset switch | J6 | 32-bit VESA Local | S2 |
| | | bus slot | |
|------------------+----------+-------------------+----------|
| Turbo switch | J7 | 32-bit VESA Local | S3 |
| | | bus slot | |
|------------------+----------+-------------------+----------|
| Speaker | J8 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|------------------------------------+--------+--------------|
| » | CMOS memory normal operation | J3 | pins 1 & 2 |
| | | | closed |
|---+--------------------------------+--------+--------------|
| | CMOS memory clear | J3 | pins 2 & 3 |
| | | | closed |
|---+--------------------------------+--------+--------------|
| » | Monitor type select CGA | J11 | Closed |
|---+--------------------------------+--------+--------------|
| | Monitor type select all others | J11 | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|------+-------------+-------------+------------+------------|
| 1MB | (1) 1M x 36 | NONE | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 2MB | (1) 1M x 36 | (1) 1M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 3MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 4MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 4MB | (1) 4M x 36 | NONE | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 5MB | (1) 1M x 36 | (1) 4M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 6MB | (1) 1M x 36 | (1) 1M x 36 | (1) 4M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 8MB | (1) 4M x 36 | (1) 4M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 9MB | (1) 1M x 36 | (1) 4M x 36 | (1) 4M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 10MB | (1) 1M x 36 | (1) 1M x 36 | (1) 4M x | (1) 4M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 12MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 16MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x | (1) 4M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 16MB | (1) 16M x | NONE | NONE | NONE |
| | 36 | | | |
|------+-------------+-------------+------------+------------|
| 20MB | (1) 4M x 36 | (1) 16M x | NONE | NONE |
| | | 36 | | |
|------+-------------+-------------+------------+------------|
| 24MB | (1) 4M x 36 | (1) 4M x 36 | (1) 16M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 32MB | (1) 16M x | (1) 16M x | NONE | NONE |
| | 36 | 36 | | |
|------+-------------+-------------+------------+------------|
| 36MB | (1) 4M x 36 | (1) 16M x | (1) 16M x | NONE |
| | | 36 | 36 | |
|------+-------------+-------------+------------+------------|
| 40MB | (1) 4M x 36 | (1) 4M x 36 | (1) 16M x | (1) 16M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 48MB | (1) 16M x | (1) 16M x | (1) 16M x | NONE |
| | 36 | 36 | 36 | |
|------+-------------+-------------+------------+------------|
| 64MB | (1) 16M x | (1) 16M x | (1) 16M x | (1) 16M x |
| | 36 | 36 | 36 | 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG |
|------------+---------------+---------------+---------------|
| 64KB | (4) 8K x 8 | (4) 8K x 8 | (1) 8K x 8 |
|------------+---------------+---------------+---------------|
| 128KB | (4) 32K x 8 | NONE | (1) 8K x 8 |
|------------+---------------+---------------+---------------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | W0 | W1 | W2 | W3 | W4 |
|-------+------------+--------+--------+----------+----------|
| 64KB | pins 1 & 2 | Open | Open | pins 1 & | pins 1 & |
| | | | | 2 | 2 |
|-------+------------+--------+--------+----------+----------|
| 128KB | pins 1 & 2 | Closed | Open | pins 2 & | pins 2 & |
| | | | | 3 | 3 |
|-------+------------+--------+--------+----------+----------|
| 256KB | pins 2 & 3 | Closed | Closed | pins 1 & | pins 2 & |
| | | | | 2 | 3 |
|------------------------------------------------------------|
| Note:Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP3 | W6 |
|--------------------+------------------+--------------------|
| 80486SX | Open | pins 2 & 3 closed |
|--------------------+------------------+--------------------|
| CX486S | Open | pins 2 & 3 closed |
|--------------------+------------------+--------------------|
| CX486S2 | Closed | pins 2 & 3 closed |
|--------------------+------------------+--------------------|
| 80487SX | Open | pins 1 & 2 closed |
|--------------------+------------------+--------------------|
| 80486DX | Open | pins 1 & 2 closed |
|--------------------+------------------+--------------------|
| 80486DX2 | Open | pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP2 | JP6 | W7 | W8 | W9 |
|--------+-----------+--------+----------+----------+--------|
| 25MHz | pins 1 & | Open | pins 1 & | pins 2 & | pins 2 |
| | 2 | | 2 | 3 | & 3 |
|--------+-----------+--------+----------+----------+--------|
| 33MHz | pins 1 & | Open | pins 1 & | pins 1 & | pins 1 |
| | 2 | | 2 | 2 | & 2 |
|--------+-----------+--------+----------+----------+--------|
| 40MHz | pins 2 & | Closed | pins 1 & | pins 1 & | pins 2 |
| | 3 | | 2 | 2 | & 3 |
|--------+-----------+--------+----------+----------+--------|
| 50iMHz | pins 1 & | Open | pins 1 & | pins 2 & | pins 2 |
| | 2 | | 2 | 3 | & 3 |
|--------+-----------+--------+----------+----------+--------|
| 50MHz | pins 2 & | Closed | pins 2 & | pins 2 & | pins 1 |
| | 3 | | 3 | 3 | & 2 |
|--------+-----------+--------+----------+----------+--------|
| 66iMHz | pins 1 & | Open | pins 1 & | pins 1 & | pins 1 |
| | 2 | | 2 | 2 | & 2 |
|------------------------------------------------------------|
| Note:Pins designated should be in the closed position. |
+------------------------------------------------------------+