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# ASUS COMPUTER INTERNATIONAL
PCI/I-486SP3G
Processor 80486SX/80486SX2/80487SX/80486DX/ODP486SX/80486DX2/80486DX4/
Pentium Overdrive
Processor 25/33/50(internal)/66(internal)/100(internal)MHz
Speed
Chip Set Intel
Max. 128MB
Onboard
DRAM
Cache 128/256/512KB
BIOS Award
Dimensions 330mm x 218mm
I/O 32-bit PCI bus slots (3), floppy drive interface, green PC
Options feature, IDE interface, parallel port, PS/2 mouse port,
serial ports (2), SCSI interface
NPU None
Options
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------------+----------+----------------+----------|
| PS/2 mouse port | J1 | Speaker | J9 |
|---------------------+----------+----------------+----------|
| Serial port 2 | J2 | Reset switch | J10 |
|---------------------+----------+----------------+----------|
| Serial port 1 | J3 | Turbo LED | J11 |
|---------------------+----------+----------------+----------|
| Parallel port | J4 | Turbo switch | J12 |
|---------------------+----------+----------------+----------|
| SCSI interface | J5 | Green PC | J13 |
| | | connector | |
|---------------------+----------+----------------+----------|
| Floppy drive | J6 | IDE interface | JP14 |
| interface | | LED | |
|---------------------+----------+----------------+----------|
| IDE interface | J7 | SCSI interface | JP15 |
| | | LED | |
|---------------------+----------+----------------+----------|
| Power LED & keylock | J8 | 32-bit PCI bus | PC1 - |
| | | slots | PC3 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | SCSI termination enabled | JP16 | Open |
|---+----------------------------------+--------+------------|
| | SCSI termination disabled | JP16 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | On board SCSI controller | JP17 | pins 1 & 2 |
| | disabled | | closed |
|---+----------------------------------+--------+------------|
| | On board SCSI controller enabled | JP17 | Open |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP19 | Open |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Flash BIOS voltage select 12 | JP21 | pins 1 & 2 |
| | volt | | closed |
|---+----------------------------------+--------+------------|
| | Flash BIOS voltage select 5 volt | JP21 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | On board mouse disabled(IRQ12) | JP22 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | On board mouse enabled (IRQ12) | JP22 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | 80486DX4 clock multiple select | JP33 | pins 2 & 3 |
| | 2x | | closed |
|---+----------------------------------+--------+------------|
| | 80486DX4 clock multiple select | JP33 | Open |
| | 3x | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 2MB | (2) 256K x 36 | NONE |
|------------------+--------------------+--------------------|
| 4MB | (2) 256K x 36 | (2) 256K x 36 |
|------------------+--------------------+--------------------|
| 4MB | (2) 512K x 36 | NONE |
|------------------+--------------------+--------------------|
| 6MB | (2) 512K x 36 | (2) 256K x 36 |
|------------------+--------------------+--------------------|
| 6MB | (2) 256K x 36 | (2) 512K x 36 |
|------------------+--------------------+--------------------|
| 8MB | (2) 512K x 36 | (2) 512K x 36 |
|------------------+--------------------+--------------------|
| 8MB | (2) 1M x 36 | NONE |
|------------------+--------------------+--------------------|
| 10MB | (2) 256K x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 10MB | (2) 1M x 36 | (2) 256K x 36 |
|------------------+--------------------+--------------------|
| 12MB | (2) 512K x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 12MB | (2) 1M x 36 | (2) 512K x 36 |
|------------------+--------------------+--------------------|
| 16MB | (2) 1M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 16MB | (2) 2M x 36 | NONE |
|------------------+--------------------+--------------------|
| 18MB | (2) 256K x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 18MB | (2) 2M x 36 | (2) 256K x 36 |
|------------------+--------------------+--------------------|
| 20MB | (2) 2M x 36 | (2) 512K x 36 |
|------------------+--------------------+--------------------|
| 20MB | (2) 512K x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 24MB | (2) 2M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 24MB | (2) 1M x 36 | (2) 2M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CON'T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 32MB | (2) 2M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 32MB | (2) 4M x 36 | NONE |
|------------------+--------------------+--------------------|
| 34MB | (2) 4M x 36 | (2) 256K x 36 |
|------------------+--------------------+--------------------|
| 34MB | (2) 256K x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 36MB | (2) 4M x 36 | (2) 512K x 36 |
|------------------+--------------------+--------------------|
| 36MB | (2) 512K x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 40MB | (2) 4M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 40MB | (2) 1M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 48MB | (2) 2M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 48MB | (2) 4M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 64MB | (2) 8M x 36 | NONE |
|------------------+--------------------+--------------------|
| 64MB | (2) 4M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 66MB | (2) 8M x 36 | (2) 256K x 36 |
|------------------+--------------------+--------------------|
| 66MB | (2) 256K x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 68MB | (2) 8M x 36 | (2) 512K x 36 |
|------------------+--------------------+--------------------|
| 68MB | (2) 512K x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 72MB | (2) 8M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 72MB | (2) 1M x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 80MB | (2) 8M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 80MB | (2) 2M x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 96MB | (2) 4M x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 96MB | (2) 8M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 128MB | (2) 8M x 36 | (2) 8M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG |
|------------+---------------+---------------+---------------|
| 128KB | (4) 32K x 8 | NONE | (1) 8K x 8 |
|------------+---------------+---------------+---------------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 |
|------------+---------------+---------------+---------------|
| 512KB | (4) 128K x 8 | NONE | (1) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP26 | JP27 | JP28 | JP29 |
|-------+-------------+------------+------------+------------|
| 128KB | pins 2 & 3 | pins 1 & 2 | pins 2 & 3 | pins 2 & 3 |
| | closed | closed | closed | closed |
|-------+-------------+------------+------------+------------|
| 256KB | pins 1 & 2 | pins 2 & 3 | pins 1 & 2 | pins 2 & 3 |
| | closed | closed | closed | closed |
|-------+-------------+------------+------------+------------|
| 512KB | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 |
| | closed | closed | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP30 | JP31 | JP32 |
|-------------+--------------+---------------+---------------|
| Non SL CPU | pins 2 & 3 | pin 1 closed | pin 1 closed |
| | closed | | |
|-------------+--------------+---------------+---------------|
| SL CPU | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 |
| | closed | closed | closed |
|------------------------------------------------------------|
| Note: One jumper cap closes between pin 1 on JP31 & pin 1 |
| on JP32. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP34 | JP35 | JP36 | JP38 |
|-------------+------------+------------+-----------+--------|
| 80486SX/SX2 | pins 1 & 2 | pins 1 & 2 | pins 2 & | Open |
| | closed | closed | 3 closed | |
|-------------+------------+------------+-----------+--------|
| 80487SX | pins 2 & 3 | pins 1 & 2 | pins 2 & | Open |
| | closed | closed | 3 closed | |
|-------------+------------+------------+-----------+--------|
| 80486DX/DX2 | pins 2 & 3 | pins 1 & 2 | pins 2 & | Open |
| | closed | closed | 3 closed | |
|-------------+------------+------------+-----------+--------|
| ODP80486SX | pins 2 & 3 | pins 1 & 2 | pins 2 & | Open |
| | closed | closed | 3 closed | |
|-------------+------------+------------+-----------+--------|
| P24D | pins 2 & 3 | pins 2 & 3 | pins 1 & | Closed |
| | closed | closed | 2, 4 & 5 | |
| | | | closed | |
|-------------+------------+------------+-----------+--------|
| Pentium | pins 2 & 3 | pins 2 & 3 | pins 1 & | Open |
| Overdrive | closed | closed | 2, 4 & 5 | |
| | | | closed | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP18 | JP20 |
|------------------+--------------------+--------------------|
| 25MHz | pins 2 & 3 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 33MHz | pins 1 & 2 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 50iMHz | pins 2 & 3 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 66iMHz | pins 1 & 2 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 100iMHz | pins 1 & 2 closed | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DMA CHANNEL CONFIGURATION |
|------------------------------------------------------------|
| Channel | JP11 | JP12 |
|------------------+--------------------+--------------------|
| DMA 1 | pins 1 & 2 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| DMA 3 | pins 2 & 3 closed | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PCI INTERRUPT CONFIGURATION (IRQ 5) |
|------------------------------------------------------------|
| PCI slot | JP1 | JP6 |
|------------------+--------------------+--------------------|
| Default | pins 2 & 3 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| PC1 | pins 1 & 2 closed | N/A |
|------------------+--------------------+--------------------|
| PC2 | pins 3 & 4 closed | N/A |
|------------------+--------------------+--------------------|
| PC3 | N/A | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| NCR SCSI | N/A | pins 3 & 4 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PCI INTERRUPT CONFIGURATION (IRQ 9) |
|------------------------------------------------------------|
| PCI slot | JP2 | JP7 |
|------------------+--------------------+--------------------|
| Default | pins 2 & 3 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| PC1 | pins 1 & 2 closed | N/A |
|------------------+--------------------+--------------------|
| PC2 | pins 3 & 4 closed | N/A |
|------------------+--------------------+--------------------|
| PC3 | N/A | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| NCR SCSI | N/A | pins 3 & 4 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PCI INTERRUPT CONFIGURATION (IRQ 11) |
|------------------------------------------------------------|
| PCI slot | JP3 | JP8 |
|------------------+--------------------+--------------------|
| Default | pins 2 & 3 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| PC1 | pins 1 & 2 closed | N/A |
|------------------+--------------------+--------------------|
| PC2 | pins 3 & 4 closed | N/A |
|------------------+--------------------+--------------------|
| PC3 | N/A | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| NCR SCSI | N/A | pins 3 & 4 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PCI INTERRUPT CONFIGURATION (IRQ 14) |
|------------------------------------------------------------|
| PCI slot | JP4 | JP9 |
|------------------+--------------------+--------------------|
| Default | pins 2 & 3 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| PC1 | pins 1 & 2 closed | N/A |
|------------------+--------------------+--------------------|
| PC2 | pins 3 & 4 closed | N/A |
|------------------+--------------------+--------------------|
| PC3 | N/A | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| NCR SCSI | N/A | pins 3 & 4 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PCI INTERRUPT CONFIGURATION (IRQ 15) |
|------------------------------------------------------------|
| PCI slot | JP5 | JP10 |
|------------------+--------------------+--------------------|
| Default | pins 2 & 3 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| PC1 | pins 1 & 2 closed | N/A |
|------------------+--------------------+--------------------|
| PC2 | pins 3 & 4 closed | N/A |
|------------------+--------------------+--------------------|
| PC3 | N/A | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| NCR SCSI | N/A | pins 3 & 4 closed |
|------------------------------------------------------------|
| Note: The NCR SCSI is the on board SCSI controller. |
+------------------------------------------------------------+