TEXT View Source
# UNIDENTIFIED
SIS486 P3
Processor 80486SX/SL80486SX/CX486DX/AM486DX/80486DX/SL80486DX/80486DX2/
SL80486DX2/80486DX4
Processor 20/25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz
Speed
Chip Set SIS
Max. 64MB
Onboard
DRAM
Cache 32/64/128/256KB
BIOS AMI
Dimensions 250mm 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 |
|--------------+----------+----------------------+-----------|
| Keylock | J1 | Green PC connector | JP74 |
|--------------+----------+----------------------+-----------|
| Speaker | J2 | Green PC connector | JP75 |
|--------------+----------+----------------------+-----------|
| Turbo LED | J4 | Turbo switch | S1 |
|--------------+----------+----------------------+-----------|
| Reset switch | J5 | 32-bit VESA local | SL1 - SL3 |
| | | bus slots | |
|--------------+----------+----------------------+-----------|
| Power LED | LED1 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|-------------------------------------+---------+------------|
| » | Factory configured - do not | J9 | Closed |
| | alter | | |
|---+---------------------------------+---------+------------|
| » | Factory configured - do not | J11 | Open |
| | alter | | |
|---+---------------------------------+---------+------------|
| » | Factory configured - do not | J12 | Open |
| | alter | | |
|---+---------------------------------+---------+------------|
| » | CLK down by SMI control | JP10 | pins 1 & 2 |
| | | | closed |
|---+---------------------------------+---------+------------|
| | CLK down by STPCLK control | JP10 | pins 2 & 3 |
| | | | closed |
|---+---------------------------------+---------+------------|
| » | Factory configured - do not | JP17 | pins 1 & 2 |
| | alter | | closed |
|---+---------------------------------+---------+------------|
| » | Factory configured - do not | JP20 | pins 1 & 2 |
| | alter | | closed |
|---+---------------------------------+---------+------------|
| | Monitor type select | JP38 | Open |
| | monochrome/EGA/VGA | | |
|---+---------------------------------+---------+------------|
| | Monitor type select CGA | JP38 | Closed |
|---+---------------------------------+---------+------------|
| » | CMOS memory normal operation | JP39 | pins 1 & 2 |
| | | | closed |
|---+---------------------------------+---------+------------|
| | CMOS memory clear | JP39 | pins 2 & 3 |
| | | | closed |
|---+---------------------------------+---------+------------|
| » | Factory configured - do not | JP43 | pins 2 & 3 |
| | alter | | closed |
|---+---------------------------------+---------+------------|
| | BIOS type select EPROM | JP73 | pins 1 & 2 |
| | | | closed |
|---+---------------------------------+---------+------------|
| | BIOS type select flash | JP73 | pins 2 & 3 |
| | | | closed |
|---+---------------------------------+---------+------------|
| » | Factory configured - do not | JP78 | pins 1 & 2 |
| | alter | | closed |
|---+---------------------------------+---------+------------|
| » | Factory configured - do not | JP79 | pins 2 & 3 |
| | alter | | closed |
|---+---------------------------------+---------+------------|
| | Turbo enabled | TBSW | pins 2 & 3 |
| | | | closed |
|---+---------------------------------+---------+------------|
| | Turbo disabled | TBSW | pins 1 & 2 |
| | | | closed |
|------------------------------------------------------------|
| Note: The location of jumpers J9, J11, J12, JP10, JP17, |
| JP39, JP43 and JP78 are unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION 1 |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|-------------+--------------+---------------+---------------|
| 2MB | NONE | (1) 256K x 36 | (1) 256K x 36 |
|-------------+--------------+---------------+---------------|
| 4MB | NONE | (1) 512K x 36 | (1) 512K x 36 |
|-------------+--------------+---------------+---------------|
| 8MB | NONE | (1) 1M x 36 | (1) 1M x 36 |
|-------------+--------------+---------------+---------------|
| 12MB | NONE | (1) 1M x 36 | (1) 2M x 36 |
|-------------+--------------+---------------+---------------|
| 16MB | NONE | (1) 2M x 36 | (1) 2M x 36 |
|-------------+--------------+---------------+---------------|
| 24MB | NONE | (1) 2M x 36 | (1) 4M x 36 |
|-------------+--------------+---------------+---------------|
| 32MB | NONE | (1) 4M x 36 | (1) 4M x 36 |
|-------------+--------------+---------------+---------------|
| 36MB | NONE | (1) 1M x 36 | (1) 8M x 36 |
|-------------+--------------+---------------+---------------|
| 48MB | NONE | (1) 4M x 36 | (1) 8M x 36 |
|-------------+--------------+---------------+---------------|
| 64MB | NONE | (1) 8M x 36 | (1) 8M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION 2 |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|-------------+---------------+---------------+--------------|
| 1MB | (4) 256K x 9 | NONE | NONE |
|-------------+---------------+---------------+--------------|
| 4MB | (4) 1M x 9 | NONE | NONE |
|-------------+---------------+---------------+--------------|
| 16MB | (4) 4M x 9 | NONE | NONE |
|-------------+---------------+---------------+--------------|
| 64MB | (4) 16M x 9 | NONE | NONE |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION 3 |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|-------------+---------------+--------------+---------------|
| 8MB | (4) 1M x 9 | NONE | (1) 1M x 36 |
|-------------+---------------+--------------+---------------|
| 20MB | (4) 1M x 9 | NONE | (1) 4M x 36 |
|-------------+---------------+--------------+---------------|
| 32MB | (4) 4M x 9 | NONE | (1) 4M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION 4 |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|------------+---------------+---------------+---------------|
| 6MB | (4) 1M x 9 | (1) 256K x 36 | (1) 256K x 36 |
|------------+---------------+---------------+---------------|
| 8MB | (4) 1M x 9 | (1) 512K x 36 | (1) 512K x 36 |
|------------+---------------+---------------+---------------|
| 12MB | (4) 1M x 9 | (1) 1M x 36 | (1) 1M x 36 |
|------------+---------------+---------------+---------------|
| 24MB | (4) 4M x 9 | (1) 1M x 36 | (1) 1M x 36 |
|------------+---------------+---------------+---------------|
| 48MB | (4) 4M x 9 | (1) 4M x 36 | (1) 4M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Configuration | JP45 | JP46 |
|--------------------+--------------------+------------------|
| 1 | pins 1 & 2 closed | Open |
|--------------------+--------------------+------------------|
| 2 | pins 1 & 2 closed | Open |
|--------------------+--------------------+------------------|
| 3 | pins 1 & 2 closed | Open |
|--------------------+--------------------+------------------|
| 4 | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG |
|---------------+---------------+--------------+-------------|
| 32KB | (4) 8K x 8 | NONE | (1) 8K x 8 |
|---------------+---------------+--------------+-------------|
| 64KB | (4) 8K x 8 | (4) 8K x 8 | (1) 8K x 8 |
|---------------+---------------+--------------+-------------|
| 128KB | (4) 32K x 8 | NONE | (1) 8K x 8 |
|---------------+---------------+--------------+-------------|
| 256KB (A) | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 |
|---------------+---------------+--------------+-------------|
| 256KB (B) | (4) 64K x 8 | NONE | (1) 32K x 8 |
|------------------------------------------------------------|
| Note: The orientation of Banks 0 & 1 and the TAG is |
| unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP30 | JP31 | JP32 | JP34 | JP35 | JP36 |
|---------+-------+-------+-------+----------+-------+-------|
| 32KB | 1 & 2 | 1 & 2 | 1 & 2 | Open | 1 & 2 | 1 & 2 |
|---------+-------+-------+-------+----------+-------+-------|
| 64KB | 2 & 3 | 1 & 2 | 1 & 2 | 1 & 2 | 2 & 3 | 1 & 2 |
|---------+-------+-------+-------+----------+-------+-------|
| 128KB | 2 & 3 | 2 & 3 | 1 & 2 | 2 & 3, 4 | 1 & 2 | 2 & 3 |
| | | | | & 5 | | |
|---------+-------+-------+-------+----------+-------+-------|
| 256KB | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2, 3 | 2 & 3 | 2 & 3 |
| (A) | | | | & 4 | | |
|---------+-------+-------+-------+----------+-------+-------|
| 256KB | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3, 4 | 1 & 2 | 2 & 3 |
| (B) | | | | & 5 | | |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | J13 | JP8 | JP12 | JP13 | JP18 | JP19 |JP24 |
|-----------+-------+------+------+------+------+------+-----|
| 80486SX |Closed |2 & 3 | Open | Open |1 & 2 |2 & 3 |Open |
|-----------+-------+------+------+------+------+------+-----|
| SL80486SX |Closed |2 & 3 | Open | Open |1 & 2 |2 & 3 |4 & 5|
|-----------+-------+------+------+------+------+------+-----|
| CX486DX | Open |2 & 3 |2 & 3 |2 & 3 |2 & 3 |1 & 2 |2 & 3|
|-----------+-------+------+------+------+------+------+-----|
| AM486DX |Closed |2 & 3 | Open | Open |1 & 2 |2 & 3 |Open |
|-----------+-------+------+------+------+------+------+-----|
| 80486DX |Closed |2 & 3 | Open | Open |1 & 2 |2 & 3 |Open |
|-----------+-------+------+------+------+------+------+-----|
| SL80486DX |Closed |2 & 3 | Open | Open |1 & 2 |2 & 3 |4 & 5|
|-----------+-------+------+------+------+------+------+-----|
| 80486DX2 |Closed |2 & 3 | Open | Open |1 & 2 |2 & 3 |Open |
|-----------+-------+------+------+------+------+------+-----|
|SL80486DX2 |Closed |2 & 3 | Open | Open |1 & 2 |2 & 3 |4 & 5|
|-----------+-------+------+------+------+------+------+-----|
| 80486DX4 |Closed |2 & 3 | Open | Open |1 & 2 |2 & 3 |4 & 5|
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Type | JP25 | JP28 | JP29 | JP33 | JP37 | JP40 |
|------------+-------+-------+-------+-------+-------+-------|
| 80486SX | Open | Open | Open | 2 & 3 | Open | 2 & 3 |
|------------+-------+-------+-------+-------+-------+-------|
| SL80486SX | 2 & 3 | 1 & 2 | 3 & 4 | 2 & 3 | Open | 2 & 3 |
|------------+-------+-------+-------+-------+-------+-------|
| CX486DX | 1 & | Open | 2 & 3 | 1 & | 3 & 4 | 2 & 3 |
| | 2, 3 | | | 2, 3 | | |
| | & 4 | | | & 4 | | |
|------------+-------+-------+-------+-------+-------+-------|
| AM486DX | Open | Open | Open | 1 & | 3 & 4 | 1 & 2 |
| | | | | 2, 3 | | |
| | | | | & 4 | | |
|------------+-------+-------+-------+-------+-------+-------|
| 80486DX | Open | Open | Open | 1 & | 3 & 4 | 2 & 3 |
| | | | | 2, 3 | | |
| | | | | & 4 | | |
|------------+-------+-------+-------+-------+-------+-------|
| SL80486DX | 2 & 3 | 1 & 2 | 3 & 4 | 1 & | 3 & 4 | 2 & 3 |
| | | | | 2, 3 | | |
| | | | | & 4 | | |
|------------+-------+-------+-------+-------+-------+-------|
| 80486DX2 | Open | Open | Open | 1 & | 3 & 4 | 2 & 3 |
| | | | | 2, 3 | | |
| | | | | & 4 | | |
|------------+-------+-------+-------+-------+-------+-------|
| SL80486DX2 | 2 & 3 | 1 & 2 | 3 & 4 | 1 & | 3 & 4 | 2 & 3 |
| | | | | 2, 3 | | |
| | | | | & 4 | | |
|------------+-------+-------+-------+-------+-------+-------|
| 80486DX4 | 2 & 3 | 1 & 2 | 3 & 4 | 1 & | 3 & 4 | 2 & 3 |
| | | | | 2, 3 | | |
| | | | | & 4 | | |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Type | JP27 |
|-------------------------------+----------------------------|
| Any CPU installed | Open |
|-------------------------------+----------------------------|
| CX486S2 only | Closed |
|------------------------------------------------------------|
| Note: The location of JP27 is unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP5 | JP6 | JP7 |
|---------------+--------------+--------------+--------------|
| 20MHz | Closed | Open | Closed |
|---------------+--------------+--------------+--------------|
| 25MHz | Closed | Closed | Open |
|---------------+--------------+--------------+--------------|
| 33MHz | Open | Closed | Closed |
|---------------+--------------+--------------+--------------|
| 40MHz | Closed | Open | Open |
|---------------+--------------+--------------+--------------|
| 50iMHz | Closed | Closed | Open |
|---------------+--------------+--------------+--------------|
| 50MHz | Open | Open | Closed |
|---------------+--------------+--------------+--------------|
| 66iMHz | Open | Closed | Closed |
|---------------+--------------+--------------+--------------|
| 75iMHz | Closed | Closed | Open |
|---------------+--------------+--------------+--------------|
| 100iMHz | Open | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION (80486DX4 ONLY) |
|------------------------------------------------------------|
| Speed | JP44 |
|----------------------------+-------------------------------|
| 2x | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 2.5x | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 3x | Open |
|------------------------------------------------------------|
| Note: The location of JP44 is unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE CONFIGURATION |
|------------------------------------------------------------|
| Voltage | JP80 |
|-------------------------------+----------------------------|
| 3.45v | Open |
|-------------------------------+----------------------------|
| 5v | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VL BUS WAIT STATE CONFIGURATION |
|------------------------------------------------------------|
| Wait states | JP4 |
|----------------------------+-------------------------------|
| 0 wait states | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 1 wait state | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VL BUS SPEED CONFIGURATION |
|------------------------------------------------------------|
| CPU speed | JP3 |
|----------------------------+-------------------------------|
| <= 33MHz | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| > 33MHz | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MISCELLANEOUS TECHNICAL NOTE |
|------------------------------------------------------------|
| Note: The location of pin 1 is unidentified. Many of |
| the jumpers on this diagram are shown for location |
| purposes only. The actual location may be different. |
| Check mainboard for actual jumper locations. |
+------------------------------------------------------------+