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# MICRO-STAR INTERNATIONAL CO., LTD.
MS-4136
Processor CX486S/SL80486SX/80486SX/AM486DX/CX486DX/SL80486DX/80486DX/
SL80486DX2/80486DX2/Pentium Overdrive
Processor 25/33/40/50(internal)/50/66(internal)MHz
Speed
Chip Set SIS
Max. 128MB
Onboard
DRAM
Cache 128/256KB
BIOS Phoenix
Dimensions 330mm x 218mm
I/O Floppy drive interface, game port, green PC connector, IDE
Options interface, parallel port, PS/2 mouse port, serial ports
(2), VGA feature connector, VGA port, riser slot
NPU None
Options
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+------------------+-----------|
| PS/2 mouse port | CN1 | Power LED & | JFP1 pins |
| | | keylock | 1 - 5 |
|------------------+----------+------------------+-----------|
| Serial port 1 | CN2 | Speaker | JFP1 pins |
| | | | 6 - 10 |
|------------------+----------+------------------+-----------|
| Serial port 2 | CN3 | Turbo LED | JFP1 pins |
| | | | 12 - 13 |
|------------------+----------+------------------+-----------|
| Parallel port | CN4 | Turbo switch | JFP1 pins |
| | | | 15 - 17 |
|------------------+----------+------------------+-----------|
| VGA port | CN5 | Reset switch | JFP1 pins |
| | | | 19 - 20 |
|------------------+----------+------------------+-----------|
| Floppy drive | CN6 | IDE interface | JFP1 pins |
| interface | | LED | 21 & 22 |
|------------------+----------+------------------+-----------|
| IDE interface | CN7 | Green PC | JG1 |
| | | connector | |
| | | (monitor) | |
|------------------+----------+------------------+-----------|
| VGA feature | CN8 | Green PC LED | JG2 |
| connector | | | |
|------------------+----------+------------------+-----------|
| Game interface | CN9 | Green PC | JG3 |
| | | connector | |
|------------------+----------+------------------+-----------|
| External battery | JB | Riser Card | SL1 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Serial port 1 COM select COM1 | JCOM1 | pins 1 & 2 |
| | 3F8 | | closed |
|---+----------------------------------+--------+------------|
| | Serial port 1 COM select COM3 | JCOM1 | pins 2 & 3 |
| | 3E8 | | closed |
|---+----------------------------------+--------+------------|
| » | Serial port 1 COM select COM2 | JCOM2 | pins 1 & 2 |
| | 2F8 | | closed |
|---+----------------------------------+--------+------------|
| | Serial port 1 COM select COM4 | JCOM2 | pins 2 & 3 |
| | 2E8 | | closed |
|---+----------------------------------+--------+------------|
| » | Floppy drive interface enabled | JFDD | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Floppy drive interface disabled | JFDD | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Game interface enabled | JGAME | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Game interface disabled | JGAME | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | IDE interface enabled | JHDD | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | IDE interface disabled | JHDD | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Parallel port LPT select LPT1 | JPP1 | pins 1 & 2 |
| | 378 | | closed |
|---+----------------------------------+--------+------------|
| | Parallel port LPT select LPT2 | JPP1 | pins 2 & 3 |
| | 278 | | closed |
|---+----------------------------------+--------+------------|
| » | Parallel port IRQ select IRQ7 | JPP2 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Parallel port IRQ select IRQ5 | JPP2 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | On board VGA enabled | JVGA | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | On board VGA disabled | JVGA | pins 2 & 3 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|-------+-------------+------------+------------+------------|
| 8MB | (1) 2M x 36 | NONE | NONE | NONE |
|-------+-------------+------------+------------+------------|
| 10MB | (1) 256K x | (1) 256K x | (1) 1M x | (1) 1M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 12MB | (1) 512K x | (1) 512K x | (1) 1M x | (1) 1M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 12MB | (1) 1M x 36 | (1) 1M x | (1) 1M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 16MB | (1) 1M x 36 | (1) 1M x | (1) 1M x | (1) 1M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 16MB | (1) 2M x 36 | (1) 2M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 16MB | (1) 4M x 36 | NONE | NONE | NONE |
|-------+-------------+------------+------------+------------|
| 17MB | (1) 256K x | (1) 4M x | NONE | NONE |
| | 36 | 36 | | |
|-------+-------------+------------+------------+------------|
| 18MB | (1) 256K x | (1) 256K x | (1) 4M x | NONE |
| | 36 | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 18MB | (1) 512K x | (1) 4M x | NONE | NONE |
| | 36 | 36 | | |
|-------+-------------+------------+------------+------------|
| 20MB | (1) 512K x | (1) 512K x | (1) 4M x | NONE |
| | 36 | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 20MB | (1) 1M x 36 | (1) 4M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 24MB | (1) 512K x | (1) 512K x | (1) 1M x | (1) 4M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 24MB | (1) 1M x 36 | (1) 1M x | (1) 4M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 24MB | (1) 2M x 36 | (1) 2M x | (1) 2M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 32MB | (1) 2M x 36 | (1) 2M x | (1) 2M x | (1) 2M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 32MB | (1) 4M x 36 | (1) 4M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 32MB | (1) 8M x 36 | NONE | NONE | NONE |
|-------+-------------+------------+------------+------------|
| 36MB | (1) 512K x | (1) 512K x | (1) 4M x | (1) 4M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 36MB | (1) 1M x 36 | (1) 4M x | (1) 4M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 36MB | (1) 1M x 36 | (1) 8M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 40MB | (1) 1M x 36 | (1) 1M x | (1) 4M x | (1) 4M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 40MB | (1) 1M x 36 | (1) 1M x | (1) 8M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 48MB | (1) 4M x 36 | (1) 4M x | (1) 4M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 48MB | (1) 4M x 36 | (1) 8M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 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 | TAG |
|-------+-------------+-------------+------------------------|
| 128KB | (4) 32K x 8 | NONE | (1) 8K or (1) 16K (1) |
| | | | 32K x 8 |
|-------+-------------+-------------+------------------------|
| 256KB | (4) 64K x 8 | NONE | (1) 16K (1) 32K x 8 |
|-------+-------------+-------------+------------------------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 16K (1) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JS1 | JS2 | JS3 |
|-------+-----------------+-----------------+----------------|
| 128KB | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 |
| | closed | closed | closed |
|-------+-----------------+-----------------+----------------|
| 256KB | pins 2 & 3 | pins 1 & 2 | pins 1 & 2 |
| | closed | closed | closed |
|-------+-----------------+-----------------+----------------|
| 256KB | pins 2 & 3 | pins 1 & 2 | pins 2 & 3 |
| | closed | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JC1 |
|--------------------------+---------------------------------|
| 80486SX | pins 2 & 3, 5 & 6, 7 & 8 closed |
|--------------------------+---------------------------------|
| 80486DX | pins 2 & 5, 4 & 7, 6 & 9 closed |
|--------------------------+---------------------------------|
| 80486DX2 | pins 2 & 5, 4 & 7, 6 & 9 closed |
|--------------------------+---------------------------------|
| Pentium Overdrive | pins 1 & 4, 2 & 5, 6 & 9 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JC2 | JC3 | JC4 | JC5 |
|--------------+-----------+-----------+----------+----------|
| Cyrix | 2 & 3, 5 | 2 & 3, 5 | 2 & 3, 5 | 2 & 3, 5 |
| | & 6 | & 6 | & 6 | & 6 |
|--------------+-----------+-----------+----------+----------|
| AMD | 6 & 7 | 6 & 7 | 6 & 7 | 6 & 7 |
|--------------+-----------+-----------+----------+----------|
| Intel | 1 & 2, 6 | 1 & 2, 6 | 1 & 2, 6 | 1 & 2, 6 |
| S-series | & 7 | & 7 | & 7 | & 7 |
|--------------+-----------+-----------+----------+----------|
| Intel | 6 & 7 | 6 & 7 | 6 & 7 | 6 & 7 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JC6 | JC7 |
|------------------+--------------------+--------------------|
| Cyrix | pins 1 & 2 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| AMD | pins 2 & 3 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| Intel | pins 2 & 3 closed | pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JK1 | JK2 | JK3 | JK4 |
|----------+-------------------+---------+---------+---------|
| 25MHz | pins 2 & 3 closed | Closed | Closed | Closed |
|----------+-------------------+---------+---------+---------|
| 33MHz | pins 1 & 2 closed | Closed | Open | Closed |
|----------+-------------------+---------+---------+---------|
| 40MHz | pins 1 & 2 closed | Closed | Closed | Open |
|----------+-------------------+---------+---------+---------|
| 50iMHz | pins 2 & 3 closed | Closed | Closed | Closed |
|----------+-------------------+---------+---------+---------|
| 50MHz | pins 1 & 2 closed | Open | Closed | Closed |
|----------+-------------------+---------+---------+---------|
| 66iMHz | pins 1 & 2 closed | Closed | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE CONFIGURATION |
|------------------------------------------------------------|
| Voltage | JP24 |
|----------------------------+-------------------------------|
| 3.3v | pins 7 & 8, 9 &10 closed |
|----------------------------+-------------------------------|
| 5v | pins 1 & 2, 3 & 4 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|------------+---------------+---------------+---------------|
| 512KB | (1) 256K x 16 | NONE | NONE |
|------------+---------------+---------------+---------------|
| 1MB | (1) 256K x 16 | (1) 256K x 16 | NONE |
|------------+---------------+---------------+---------------|
| 2MB | (1) 256K x 16 | (1) 256K x 16 | (2) 256K x 16 |
+------------------------------------------------------------+