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# MICRO-STAR INTERNATIONAL CO., LTD.
MS-5156
Processor CX 6X86/CX 6X86L/CX 6X86MX/AM K5/AM
K6/Pentium
Processor Speed 90/100/120/133/150/166/200/233/266MHz
Chip Set Intel
Video Chip Set None
Maximum Onboard 256MB (EDO supported)
Memory
Maximum Video None
Memory
Cache 512KB
BIOS Unidentified
Dimensions 250mm x 220mm
I/O Options 32-bit PCI slots (5), floppy drive interface,
green PC connector, IDE IDE interfaces (2),
parallel port, PS/2 mouse port, PS/2 mouse
interface, serial ports (2), IR connector,
USB connector, ATX power connector
NPU Options None
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-----------------+-------------+---------------+------------|
| ATX power | ATX | Turbo switch | JFP1/pins |
| connector | | | 15 - 17 |
|-----------------+-------------+---------------+------------|
| Serial port 2 | CN1 | Reset switch | JFP1/pins |
| | | | 19 & 20 |
|-----------------+-------------+---------------+------------|
| Serial port 1 | CN2 | IDE interface | JFP1/pins |
| | | LED | 21 & 22 |
|-----------------+-------------+---------------+------------|
| Floppy drive | CN3 | Green PC LED | JGL1 |
| interface | | | |
|-----------------+-------------+---------------+------------|
| Parallel port | CN4 | Green PC | JGS1 |
| | | connector | |
|-----------------+-------------+---------------+------------|
| IDE interface 2 | CN5 | IR connector | JIR1 |
|-----------------+-------------+---------------+------------|
| IDE interface 1 | CN6 | PS/2 mouse | JMS1 |
| | | interface | |
|-----------------+-------------+---------------+------------|
| CPU fan | JFAN1 | Power fan | JPFAN |
|-----------------+-------------+---------------+------------|
| CPU fan | JFAN2 | Chassis fan | JSFAN |
| | | power | |
|-----------------+-------------+---------------+------------|
| Power LED & | JFP1/pins 1 | 32-bit PCI | PC1 – PC5 |
| keylock | - 5 | slots | |
|-----------------+-------------+---------------+------------|
| Speaker | JFP1/pins 7 | USB connector | USB |
| | - 10 | | |
|-----------------+-------------+---------------+------------|
| Turbo LED | JFP1/pins | | |
| | 12 & 13 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-------------------------------------+-------+--------------|
| » | Factory configured - do not | J10 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | CMOS memory normal operation | JBAT1 | Pins 1 & 2 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | CMOS memory clear | JBAT1 | Pins 2 & 3 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JRMC1 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JRMS1 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JRMS2 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JV8 | Unidentified |
| | alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SIMM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 8MB | (2) 1M x 36 | None |
|------------------+--------------------+--------------------|
| 16MB | (2) 2M x 36 | None |
|------------------+--------------------+--------------------|
| 16MB | (2) 1M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 24MB | (2) 2M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 32MB | (2) 4M x 36 | None |
|------------------+--------------------+--------------------|
| 32MB | (2) 2M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 40MB | (2) 4M x 36 | (2) 1M 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 |
|------------------+--------------------+--------------------|
| 72MB | (2) 8M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 80MB | (2) 8M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 96MB | (2) 8M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 128MB | (2) 8M x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 128MB | (2) 16M x 36 | None |
|------------------+--------------------+--------------------|
| 136MB | (2) 16M x 36 | (2) 1M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SIMM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|--------------+------------------------+--------------------|
| 144MB | (2) 16M x 36 | (2) 2M x 36 |
|--------------+------------------------+--------------------|
| 160MB | (2) 16M x 36 | (2) 4M x 36 |
|--------------+------------------------+--------------------|
| 192MB | (2) 16M x 36 | (2) 8M x 36 |
|--------------+------------------------+--------------------|
| 256MB | (2) 16M x 36 | (2) 16M x 36 |
|------------------------------------------------------------|
| Note: Board accepts EDO memory. Do not install SIMMs & |
| DIMMs at the same time. If both are used, DIMMs must be |
| 5v. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 8MB | (1) 1M x 64 | None |
|------------------+--------------------+--------------------|
| 16MB | (1) 2M x 64 | None |
|------------------+--------------------+--------------------|
| 16MB | (1) 1M x 64 | (1) 1M x 64 |
|------------------+--------------------+--------------------|
| 24MB | (1) 2M x 64 | (1) 1M x 64 |
|------------------+--------------------+--------------------|
| 32MB | (1) 4M x 64 | None |
|------------------+--------------------+--------------------|
| 32MB | (1) 2M x 64 | (1) 2M x 64 |
|------------------+--------------------+--------------------|
| 40MB | (1) 4M x 64 | (1) 1M x 64 |
|------------------+--------------------+--------------------|
| 48MB | (1) 4M x 64 | (1) 2M x 64 |
|------------------+--------------------+--------------------|
| 64MB | (1) 8M x 64 | None |
|------------------+--------------------+--------------------|
| 64MB | (1) 4M x 64 | (1) 4M x 64 |
|------------------+--------------------+--------------------|
| 72MB | (1) 8M x 64 | (1) 1M x 64 |
|------------------+--------------------+--------------------|
| 80MB | (1) 8M x 64 | (1) 2M x 64 |
|------------------+--------------------+--------------------|
| 96MB | (1) 8M x 64 | (1) 4M x 64 |
|------------------+--------------------+--------------------|
| 128MB | (1) 16M x 64 | None |
|------------------+--------------------+--------------------|
| 128MB | (1) 8M x 64 | (1) 8M x 64 |
|------------------+--------------------+--------------------|
| 136MB | (1) 16M x 64 | (1) 1M x 64 |
|------------------+--------------------+--------------------|
| 144MB | (1) 16M x 64 | (1) 2M x 64 |
|------------------+--------------------+--------------------|
| 160MB | (1) 16M x 64 | (1) 4M x 64 |
|------------------+--------------------+--------------------|
| 192MB | (1) 16M x 64 | (1) 8M x 64 |
|------------------+--------------------+--------------------|
| 256MB | (1) 16M x 64 | (1) 16M x 64 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM VOLTAGE CONFIGURATION |
|------------------------------------------------------------|
| Voltage | JV1 |
|----------------------------+-------------------------------|
| 3.3v | Pins 1 & 2, 3 & 4 closed |
|----------------------------+-------------------------------|
| 5v | Pins 5 & 6, 7 & 8 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 |
|----------------------------+-------------------------------|
| 512KB | (2) 64K x 32 |
|------------------------------------------------------------|
| Note: The location of bank 0 is unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86/6X86L) |
|------------------------------------------------------------|
| CPU |Clock|Multiplier|SW1/1|SW1/2|SW1/3|SW1/4|SW1/5|SW1/6|
| speed |speed| | | | | | | |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|133MHz |55MHz| 2x | On | Off | Off | On | On | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|150MHz |60MHz| 2x | On | Off | Off | On | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|166MHz |66MHz| 2x | On | Off | Off | Off | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86MX) |
|------------------------------------------------------------|
| CPU |Clock|Multiplier|SW1/1|SW1/2|SW1/3|SW1/4|SW1/5|SW1/6|
| speed |speed| | | | | | | |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|166MHz |60MHz| 2.5x | On | On | Off | On | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|166MHz |66MHz| 2x | On | Off | Off | Off | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|200MHz |75MHz| 2x | On | Off | Off | Off | On | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|200MHz |66MHz| 2.5x | On | On | Off | Off | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|233MHz |66MHz| 3x | Off | On | Off | Off | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|233MHz |75MHz| 2.5x | On | On | Off | Off | On | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|266MHz |66MHz| 3.5x | Off | Off | Off | Off | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|266MHz |75MHz| 3x | Off | On | Off | Off | On | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AM K6) |
|------------------------------------------------------------|
| CPU |Clock|Multiplier|SW1/1|SW1/2|SW1/3|SW1/4|SW1/5|SW1/6|
| speed |speed| | | | | | | |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|166MHz |66MHz| 2.5x | On | On | Off | Off | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|200MHz |66MHz| 3x | Off | On | Off | Off | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|233MHz |66MHz| 3.5x | Off | Off | Off | Off | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AM K5) |
|------------------------------------------------------------|
| CPU |Clock|Multiplier|SW1/1|SW1/2|SW1/3|SW1/4|SW1/5|SW1/6|
| speed |speed| | | | | | | |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
| 90MHz |60MHz| 1.5x | Off | Off | Off | On | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|100MHz |66MHz| 1.5x | Off | Off | Off | Off | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|120MHz |60MHz| 2x | On | Off | Off | On | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|133MHz |66MHz| 2x | On | Off | Off | Off | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|150MHz |66MHz| 2x | On | Off | Off | Off | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|166MHz |66MHz| 2.5x | On | On | Off | Off | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL) |
|------------------------------------------------------------|
| CPU |Clock|Multiplier|SW1/1|SW1/2|SW1/3|SW1/4|SW1/5|SW1/6|
| speed |speed| | | | | | | |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
| 90MHz |60MHz| 1.5x | Off | Off | Off | On | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|100MHz |66MHz| 1.5x | Off | Off | Off | Off | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|120MHz |60MHz| 2x | On | Off | Off | On | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|133MHz |66MHz| 2x | On | Off | Off | Off | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|150MHz |60MHz| 2.5x | On | On | Off | On | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|166MHz |66MHz| 2.5x | On | On | Off | Off | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|200MHz |66MHz| 3x | Off | On | Off | Off | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|233MHz |66MHz| 3.5x | Off | Off | Off | Off | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION (SINGLE) |
|------------------------------------------------------------|
| Voltage | JV2 | JV3 | JV4 | JV5 |
|------------+-----------+-----------+-----------+-----------|
| 3.3v | Closed | Open | Closed | Closed |
|------------+-----------+-----------+-----------+-----------|
| 3.5v | Closed | Closed | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION (DUAL) |
|------------------------------------------------------------|
| Voltage | V core | JV2 | JV3 | JV4 | JV5 |
|----------+---------+---------+---------+---------+---------|
| 3.3v | 2.1v | Closed | Open | Open | Open |
|----------+---------+---------+---------+---------+---------|
| 3.3v | 2.2v | Open | Closed | Open | Open |
|----------+---------+---------+---------+---------+---------|
| 3.3v | 2.3v | Closed | Closed | Open | Open |
|----------+---------+---------+---------+---------+---------|
| 3.3v | 2.4v | Open | Open | Closed | Open |
|----------+---------+---------+---------+---------+---------|
| 3.3v | 2.5v | Closed | Open | Closed | Open |
|----------+---------+---------+---------+---------+---------|
| 3.3v | 2.6v | Open | Closed | Closed | Open |
|----------+---------+---------+---------+---------+---------|
| 3.3v | 2.7v | Closed | Closed | Closed | Open |
|----------+---------+---------+---------+---------+---------|
| 3.3v | 2.8v | Open | Open | Closed | Closed |
|----------+---------+---------+---------+---------+---------|
| 3.3v | 2.9v | Closed | Open | Open | Closed |
|----------+---------+---------+---------+---------+---------|
| 3.3v | 3.2v | Open | Open | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLASH BIOS SELECTION |
|------------------------------------------------------------|
| Setting | JP1 | JP2 |
|------------------+--------------------+--------------------|
| | 5v | Pins 1 & 2 closed | Pins 1 & 2 closed |
|---+--------------+--------------------+--------------------|
| » | 12v | Pins 2 & 3 closed | Pins 2 & 3 closed |
+------------------------------------------------------------+