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# ACER, INC.
VI15G
Processor 80486SX/CX486DX/AMD486DX/80486DX/ODP486SX/CX486DX2/AMD486DXL/AMD486DX2/80486DX2
Processor 25/33/40/50(internal)/50/66(internal)MHz
Speed
Chip Set SIS
Max. 128MB
Onboard
DRAM
Cache 128/256/512KB
BIOS AMI
Dimensions 254mm x 220mm
I/O 32-bit VESA local bus slots (3), green PC connector
Options
NPU None
Options
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+-----------+-----------------+-----------|
| External battery | J1 | Turbo LED | J4 (pins |
| | | (green PC LED) | 12 - 13) |
|------------------+-----------+-----------------+-----------|
| Chassis fan | J2 | Turbo switch | J4 (pins |
| power | | (green PC | 15 - 16) |
| | | break) | |
|------------------+-----------+-----------------+-----------|
| Chassis fan | J3 | Reset switch | J4 (pins |
| power | | | 19 - 20) |
|------------------+-----------+-----------------+-----------|
| Power LED & | J4 (pins | 32-bit VESA | SL1 - SL3 |
| keylock | 1 - 5) | local bus slots | |
|------------------+-----------+-----------------+-----------|
| Speaker | J4 (pins | | |
| | 6 - 10) | | |
|------------------------------------------------------------|
| Note: The location of J3 is unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | CMOS memory normal operation | JP6 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | CMOS memory clear | JP6 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP7 | Open |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP8 | Open |
| | alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|------+---------------+-------------+------------+----------|
| 1MB | (1) 256K x 36 | NONE | NONE | NONE |
|------+---------------+-------------+------------+----------|
| 2MB | (1) 256K x 36 | (1) 256K x | NONE | NONE |
| | | 36 | | |
|------+---------------+-------------+------------+----------|
| 2MB | (1) 512K x 36 | NONE | NONE | NONE |
|------+---------------+-------------+------------+----------|
| 4MB | (1) 256K x 36 | (1) 256K x | (1) 512K x | NONE |
| | | 36 | 36 | |
|------+---------------+-------------+------------+----------|
| 4MB | (1) 512K x 36 | (1) 512K x | NONE | NONE |
| | | 36 | | |
|------+---------------+-------------+------------+----------|
| 4MB | (1) 1M x 36 | NONE | NONE | NONE |
|------+---------------+-------------+------------+----------|
| 5MB | (1) 256K x 36 | (1) 1M x 36 | NONE | NONE |
|------+---------------+-------------+------------+----------|
| 6MB | (1) 256K x 36 | (1) 256K x | (1) 1M x | NONE |
| | | 36 | 36 | |
|------+---------------+-------------+------------+----------|
| 6MB | (1) 512K x 36 | (1) 1M x 36 | NONE | NONE |
|------+---------------+-------------+------------+----------|
| 8MB | (1) 256K x 36 | (1) 256K x | (1) 512K x | (1) 1M x |
| | | 36 | 36 | 36 |
|------+---------------+-------------+------------+----------|
| 8MB | (1) 512K x 36 | (1) 512K x | (1) 1M x | NONE |
| | | 36 | 36 | |
|------+---------------+-------------+------------+----------|
| 8MB | (1) 1M x 36 | (1) 1M x 36 | NONE | NONE |
|------+---------------+-------------+------------+----------|
| 8MB | (1) 2M x 36 | NONE | NONE | NONE |
|------+---------------+-------------+------------+----------|
| 10MB | (1) 256K x 36 | (1) 256K x | (1) 1M x | (1) 1M x |
| | | 36 | 36 | 36 |
|------+---------------+-------------+------------+----------|
| 12MB | (1) 512K x 36 | (1) 512K x | (1) 1M x | (1) 1M x |
| | | 36 | 36 | 36 |
|------+---------------+-------------+------------+----------|
| 12MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x | NONE |
| | | | 36 | |
|------+---------------+-------------+------------+----------|
| 16MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|------+---------------+-------------+------------+----------|
| 16MB | (1) 2M x 36 | (1) 2M x 36 | NONE | NONE |
|------+---------------+-------------+------------+----------|
| 16MB | (1) 4M x 36 | NONE | NONE | NONE |
|------+---------------+-------------+------------+----------|
| 17MB | (1) 256K x 36 | (1) 4M x 36 | NONE | NONE |
|------+---------------+-------------+------------+----------|
| 18MB | (1) 256K x 36 | (1) 256K x | (1) 4M x | NONE |
| | | 36 | 36 | |
|------+---------------+-------------+------------+----------|
| 18MB | (1) 512K x 36 | (1) 4M x 36 | NONE | NONE |
|------+---------------+-------------+------------+----------|
| 20MB | (1) 512K x 36 | (1) 512K x | (1) 4M x | NONE |
| | | 36 | 36 | |
|------+---------------+-------------+------------+----------|
| 20MB | (1) 1M x 36 | (1) 4M x 36 | NONE | NONE |
|------+---------------+-------------+------------+----------|
| 24MB | (1) 512K x 36 | (1) 512K x | (1) 1M x | (1) 4M x |
| | | 36 | 36 | 36 |
|------+---------------+-------------+------------+----------|
| 24MB | (1) 1M x 36 | (1) 1M x 36 | (1) 4M x | NONE |
| | | | 36 | |
|------+---------------+-------------+------------+----------|
| 24MB | (1) 2M x 36 | (1) 2M x 36 | (1) 2M x | NONE |
| | | | 36 | |
|------+---------------+-------------+------------+----------|
| 32MB | (1) 2M x 36 | (1) 2M x 36 | (1) 2M x | (1) 2M x |
| | | | 36 | 36 |
|------+---------------+-------------+------------+----------|
| 32MB | (1) 4M x 36 | (1) 4M x 36 | NONE | NONE |
|------+---------------+-------------+------------+----------|
| 32MB | (1) 8M x 36 | NONE | NONE | NONE |
|------+---------------+-------------+------------+----------|
| 36MB | (1) 512K x 36 | (1) 512K x | (1) 4M x | (1) 4M x |
| | | 36 | 36 | 36 |
|------+---------------+-------------+------------+----------|
| 36MB | (1) 1M x 36 | (1) 4M x 36 | (1) 4M x | NONE |
| | | | 36 | |
|------+---------------+-------------+------------+----------|
| 36MB | (1) 1M x 36 | (1) 8M x 36 | NONE | NONE |
|------+---------------+-------------+------------+----------|
| 40MB | (1) 1M x 36 | (1) 1M x 36 | (1) 4M x | (1) 4M x |
| | | | 36 | 36 |
|------+---------------+-------------+------------+----------|
| 40MB | (1) 1M x 36 | (1) 1M x 36 | (1) 8M x | NONE |
| | | | 36 | |
|------+---------------+-------------+------------+----------|
| 48MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x | NONE |
| | | | 36 | |
|------+---------------+-------------+------------+----------|
| 48MB | (1) 4M x 36 | (1) 8M x 36 | NONE | NONE |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|-------+-------------+------------+------------+------------|
| 64MB | (1) 4M x 36 | (1) 4M x | (1) 4M x | (1) 4M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 64MB | (1) 16M x | NONE | NONE | NONE |
| | 36 | | | |
|-------+-------------+------------+------------+------------|
| 64MB | (1) 4M x 36 | (1) 4M x | (1) 8M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 64MB | (1) 8M x 36 | (1) 8M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 65MB | (1) 256K x | (1) 16M x | NONE | NONE |
| | 36 | 36 | | |
|-------+-------------+------------+------------+------------|
| 68MB | (1) 1M x 36 | (1) 16M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 68MB | (1) 1M x 36 | (1) 8M x | (1) 8M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 72MB | (1) 1M x 36 | (1) 1M x | (1) 16M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 72MB | (1) 1M x 36 | (1) 1M x | (1) 8M x | (1) 8M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 80MB | (1) 4M x 36 | (1) 16M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 80MB | (1) 4M x 36 | (1) 8M x | (1) 8M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 96MB | (1) 4M x 36 | (1) 4M x | (1) 16M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 96MB | (1) 4M x 36 | (1) 4M x | (1) 8M x | (1) 8M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 96MB | (1) 8M x 36 | (1) 8M x | (1) 8M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 128MB | (1) 16M x | (1) 16M x | NONE | NONE |
| | 36 | 36 | | |
|-------+-------------+------------+------------+------------|
| 128MB | (1) 8M x 36 | (1) 8M x | (1) 8M x | (1) 8M x |
| | | 36 | 36 | 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 128KB | (4) 32K x 8 | NONE |
|------------------+--------------------+--------------------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 |
|------------------+--------------------+--------------------|
| 256KB | (4) 64K x 8 | NONE |
|------------------+--------------------+--------------------|
| 512KB | (4) 128K x 8 | NONE |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP1 | JP2 |
|-------+---------------------------+------------------------|
| 128KB | pins 1 & 2, 4 & 5, 8 & 9 | pins 1 & 2, 4 & 5, 8 & |
| | closed | 9 closed |
|-------+---------------------------+------------------------|
| 256KB | pins 2 & 3, 5 & 6, 8 & 9 | pins 2 & 3, 5 & 6, 8 & |
| | closed | 9 closed |
|-------+---------------------------+------------------------|
| 256KB | pins 1 & 2, 5 & 6, 8 & 9 | pins 1 & 2, 4 & 5, 8 & |
| | closed | 9 closed |
|-------+---------------------------+------------------------|
| 512KB | pins 1 & 2, 5 & 6, 7 & 8 | pins 1 & 2, 4 & 5, 7 & |
| | closed | 8 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP9 | JP10 | JP13 | JP23 |
|-------------+-------+-------+-------+----------------------|
| CX486S | 2 & 3 | 2 & 3 | 1 & 2 | 2 & 3, 5 & 6, 7 & 8 |
|-------------+-------+-------+-------+----------------------|
| SL80486SX | 1 & 2 | 1 & 2 | 1 & 2 | 3 & 4, 5 & 6, 7 & 8 |
|-------------+-------+-------+-------+----------------------|
| 80486SX | 1 & 2 | 1 & 2 | Open | 6 & 7 |
|-------------+-------+-------+-------+----------------------|
| AMD486DXL | 2 & 3 | 2 & 3 | 2 & 3 | 5 & 6, 7 & 8 |
|-------------+-------+-------+-------+----------------------|
| 80486DX/DX2 | 1 & 2 | 1 & 2 | Open | 5 & 6, 7 & 8 |
|-------------+-------+-------+-------+----------------------|
| P24D | 1 & 2 | 2 & 3 | 1 & 2 | 1 & 2, 3 & 4, 5 & 6, |
| | | | | 7 & 8 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Type | JP24 | JP25 | JP26 | JP27 |
|--------------+----------+----------+------------+----------|
| CX486S | 2 & 3, 7 | 2 & 3 | 4 & 5 | 2 & 3, 7 |
| | & 8 | | | & 8 |
|--------------+----------+----------+------------+----------|
| SL80486SX | 7 & 8 | Open | 1 & 2, 5 & | 4 & 5, 7 |
| | | | 6 | & 8 |
|--------------+----------+----------+------------+----------|
| 80486SX | Open | Open | Open | 7 & 8 |
|--------------+----------+----------+------------+----------|
| AMD486DXL | 3 & 4, 5 | Open | Open | 7 & 8 |
| | & 6 | | | |
|--------------+----------+----------+------------+----------|
| 80486DX/DX2 | 7 & 8 | Open | Open | 7 & 8 |
|--------------+----------+----------+------------+----------|
| P24D | 7 & 8 | 1 & 2, 5 | 2 & 3, 5 & | 4 & 5, 6 |
| | | & 6 | 6, 7 & 8 | & 7 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP11 |
|----------------------------+-------------------------------|
| 25MHz | pins 1 & 2, 5 & 6 closed |
|----------------------------+-------------------------------|
| 33MHz | pins 1 & 2, 3 & 4 closed |
|----------------------------+-------------------------------|
| 40MHz | pins 5 & 6 closed |
|----------------------------+-------------------------------|
| 50iMHz | pins 1 & 2, 5 & 6 closed |
|----------------------------+-------------------------------|
| 50MHz | pins 3 & 4 closed |
|----------------------------+-------------------------------|
| 66iMHz | pins 1 & 2, 3 & 4 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VESA WAIT STATE CONFIGURATION |
|------------------------------------------------------------|
| Wait states | JP18 |
|----------------------------+-------------------------------|
| 0 wait states | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 1 wait state | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BUS SPEED CONFIGURATION |
|------------------------------------------------------------|
| CPU speed | JP19 |
|----------------------------+-------------------------------|
| <= 33MHz | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| > 33MHz | pins 2 & 3 closed |
+------------------------------------------------------------+