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# SOYO COMPUTER CO., LTD.
SY-5STM
Device Mainboard
Type
Processor CX 6X86/CX 686MX/CX MII/AM K5/AM K6/Pentium/Pentium
MMX
Processor 90/100/120/133/150/166/180/200/225/233/240/266/300MHz
Speed
Chip Set SIS 5598
Video Chip Unidentified
Set
Maximum 256MB (SDRAM supported) Unified Memory Architecture
Onboard (UMA)
Memory
Cache Unidentified
BIOS Award
Dimensions 244mm x 190mm
I/O 32-bit PCI slots (2), floppy drive interface, IDE
Options interfaces (2), parallel port, PS/2 mouse port,
serial ports (2), VGA port, IR connector, USB
connectors (2), ATX power connector, line in, line
out, microphone in, audio in – CD-ROMs (2), wake on
LAN connector
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| ATX power | ATX | Parallel port | CN7 |
| connector | | | |
|-------------------+----------+------------------+----------|
| Reset switch | C1 | USB connector 1 | CN8 |
|-------------------+----------+------------------+----------|
| Soft off power | C2 | USB connector 2 | CN9 |
| supply | | | |
|-------------------+----------+------------------+----------|
| Turbo LED | C3 | PS/2 mouse port | CN10 |
|-------------------+----------+------------------+----------|
| IDE interface LED | C4 | IDE interface 2 | CN11 |
|-------------------+----------+------------------+----------|
| Power LED & | C5 | IDE interface 1 | CN12 |
| keylock | | | |
|-------------------+----------+------------------+----------|
| Speaker | C6 | Floppy drive | CN13 |
| | | interface | |
|-------------------+----------+------------------+----------|
| CPU fan power | C7 | Serial port 2 | CN14 |
|-------------------+----------+------------------+----------|
| Game/MIDI port | CN1 | IR connector | IR1 |
|-------------------+----------+------------------+----------|
| Microphone in | CN2 | Audio in – | JP1 |
| | | CD-ROM | |
|-------------------+----------+------------------+----------|
| Line in | CN3 | Audio in – | JP2 |
| | | CD-ROM | |
|-------------------+----------+------------------+----------|
| Line out | CN4 | Wake on LAN | JP44 |
| | | connector | |
|-------------------+----------+------------------+----------|
| VGA port | CN5 | 32-bit PCI slots | PC1 – |
| | | | PC2 |
|-------------------+----------+------------------+----------|
| Serial port 1 | CN6 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-------------------------------------+-------+--------------|
| » | Factory configured - do not | J2 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | J4 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | J5 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | CMOS memory normal operation | JP5 | Pins 1 & 2 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | CMOS memory clear | JP5 | Pins 2 & 3 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP22 | Unidentified |
| | alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 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 |
|------------------------------------------------------------|
| Note: Board accepts SDRAM memory. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Note: The location of the cache is unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP10 | JP11 | JP12 | JP13 |
| speed | speed | | | | | |
|--------+--------+------------+-------+-------+------+------|
| 150MHz | 60MHz | 2x | 2 & 3 | 2 & 3 | 1 & | 1 & |
| | | | | | 2 | 2 |
|--------+--------+------------+-------+-------+------+------|
| 166MHz | 66MHz | 2x | 2 & 3 | 1 & 2 | 2 & | 1 & |
| | | | | | 3 | 2 |
|--------+--------+------------+-------+-------+------+------|
| 200MHz | 66MHz | 2x | 2 & 3 | 1 & 2 | 2 & | 1 & |
| | | | | | 3 | 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86, CON’T) |
|------------------------------------------------------------|
| CPU speed | Clock | Multiplier | JP14 | JP15 | JP16 |
| | speed | | | | |
|-----------+----------+------------+--------+------+--------|
| 150MHz | 60MHz | 2x | Open | Open | Closed |
|-----------+----------+------------+--------+------+--------|
| 166MHz | 66MHz | 2x | Open | Open | Closed |
|-----------+----------+------------+--------+------+--------|
| 200MHz | 66MHz | 2x | Closed | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86MX) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP10 | JP11 | JP12 | JP13 |
| speed | speed | | | | | |
|--------+--------+------------+-------+-------+------+------|
| 166MHz | 60MHz | 2.5x | 2 & 3 | 2 & 3 | 1 & | 1 & |
| | | | | | 2 | 2 |
|--------+--------+------------+-------+-------+------+------|
| 166MHz | 66MHz | 2x | 2 & 3 | 1 & 2 | 2 & | 1 & |
| | | | | | 3 | 2 |
|--------+--------+------------+-------+-------+------+------|
| 200MHz | 66MHz | 2.5x | 2 & 3 | 1 & 2 | 2 & | 1 & |
| | | | | | 3 | 2 |
|--------+--------+------------+-------+-------+------+------|
| 200MHz | 75MHz | 2x | 1 & 2 | 2 & 3 | 1 & | 1 & |
| | | | | | 2 | 2 |
|--------+--------+------------+-------+-------+------+------|
| 233MHz | 75MHz | 2.5x | 1 & 2 | 2 & 3 | 1 & | 1 & |
| | | | | | 2 | 2 |
|--------+--------+------------+-------+-------+------+------|
| 266MHz | 83MHz | 2.5x | 1 & 2 | 1 & 2 | 2 & | 2 & |
| | | | | | 3 | 3 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86MX, CON’T) |
|------------------------------------------------------------|
| CPU speed | Clock | Multiplier | JP14 | JP15 | JP16 |
| | speed | | | | |
|-----------+----------+------------+--------+------+--------|
| 166MHz | 60MHz | 2.5x | Closed | Open | Closed |
|-----------+----------+------------+--------+------+--------|
| 166MHz | 66MHz | 2x | Open | Open | Closed |
|-----------+----------+------------+--------+------+--------|
| 200MHz | 66MHz | 2.5x | Closed | Open | Closed |
|-----------+----------+------------+--------+------+--------|
| 200MHz | 75MHz | 2x | Open | Open | Closed |
|-----------+----------+------------+--------+------+--------|
| 233MHz | 75MHz | 2.5x | Closed | Open | Closed |
|-----------+----------+------------+--------+------+--------|
| 266MHz | 83MHz | 2.5x | Closed | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX MII) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP10 | JP11 | JP12 | JP13 |
| speed | speed | | | | | |
|--------+--------+------------+-------+-------+------+------|
| 300MHz | 66MHz | 3.5x | 2 & 3 | 1 & 2 | 2 & | 1 & |
| | | | | | 3 | 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX MII, CON’T) |
|------------------------------------------------------------|
| CPU speed | Clock speed | Multiplier | JP14 | JP15 | JP16 |
|-----------+-------------+------------+-------+------+------|
| 300MHz | 66MHz | 3.5x | Open | Open | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (IDT C6) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP10 | JP11 | JP12 | JP13 |
| speed | speed | | | | | |
|--------+--------+------------+-------+-------+------+------|
| 180MHz | 60MHz | 3x | 2 & 3 | 2 & 3 | 1 & | 1 & |
| | | | | | 2 | 2 |
|--------+--------+------------+-------+-------+------+------|
| 200MHz | 66MHz | 3x | 2 & 3 | 1 & 2 | 2 & | 1 & |
| | | | | | 3 | 2 |
|--------+--------+------------+-------+-------+------+------|
| 225MHz | 75MHz | 3x | 1 & 2 | 2 & 3 | 1 & | 1 & |
| | | | | | 2 | 2 |
|--------+--------+------------+-------+-------+------+------|
| 240MHz | 60MHz | 4x | 2 & 3 | 2 & 3 | 1 & | 1 & |
| | | | | | 2 | 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (IDT C6, CON’T) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP14 | JP15 | JP16 |
| speed | speed | | | | |
|---------+----------+------------+--------+--------+--------|
| 180MHz | 60MHz | 3x | Closed | Open | Open |
|---------+----------+------------+--------+--------+--------|
| 200MHz | 66MHz | 3x | Closed | Open | Open |
|---------+----------+------------+--------+--------+--------|
| 225MHz | 75MHz | 3x | Closed | Open | Open |
|---------+----------+------------+--------+--------+--------|
| 240MHz | 60MHz | 4x | Open | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AM K5) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP10 | JP11 | JP12 | JP13 |
| speed | speed | | | | | |
|--------+--------+------------+-------+-------+------+------|
| 90MHz | 60MHz | 1.5x | 2 & 3 | 2 & 3 | 1 & | 1 & |
| | | | | | 2 | 2 |
|--------+--------+------------+-------+-------+------+------|
| 100MHz | 66MHz | 1.5x | 2 & 3 | 1 & 2 | 2 & | 1 & |
| | | | | | 3 | 2 |
|--------+--------+------------+-------+-------+------+------|
| 120MHz | 60MHz | 2x | 2 & 3 | 2 & 3 | 1 & | 1 & |
| | | | | | 2 | 2 |
|--------+--------+------------+-------+-------+------+------|
| 133MHz | 66MHz | 2x | 2 & 3 | 1 & 2 | 2 & | 1 & |
| | | | | | 3 | 2 |
|--------+--------+------------+-------+-------+------+------|
| 150MHz | 60MHz | 2.5x | 2 & 3 | 2 & 3 | 1 & | 1 & |
| | | | | | 2 | 2 |
|--------+--------+------------+-------+-------+------+------|
| 166MHz | 66MHz | 2.5x | 2 & 3 | 1 & 2 | 2 & | 1 & |
| | | | | | 3 | 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AM K5, CON’T) |
|------------------------------------------------------------|
| CPU speed | Clock | Multiplier | JP14 | JP15 | JP16 |
| | speed | | | | |
|-----------+----------+------------+--------+------+--------|
| 90MHz | 60MHz | 1.5x | Open | Open | Open |
|-----------+----------+------------+--------+------+--------|
| 100MHz | 66MHz | 1.5x | Open | Open | Open |
|-----------+----------+------------+--------+------+--------|
| 120MHz | 60MHz | 2x | Open | Open | Closed |
|-----------+----------+------------+--------+------+--------|
| 133MHz | 66MHz | 2x | Open | Open | Closed |
|-----------+----------+------------+--------+------+--------|
| 150MHz | 60MHz | 2.5x | Closed | Open | Closed |
|-----------+----------+------------+--------+------+--------|
| 166MHz | 66MHz | 2.5x | Closed | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AM K6) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP10 | JP11 | JP12 | JP13 |
| speed | speed | | | | | |
|--------+--------+------------+-------+-------+------+------|
| 166MHz | 66MHz | 2.5x | 2 & 3 | 1 & 2 | 2 & | 1 & |
| | | | | | 3 | 2 |
|--------+--------+------------+-------+-------+------+------|
| 200MHz | 66MHz | 3x | 2 & 3 | 1 & 2 | 2 & | 1 & |
| | | | | | 3 | 2 |
|--------+--------+------------+-------+-------+------+------|
| 233MHz | 66MHz | 3.5x | 2 & 3 | 1 & 2 | 2 & | 1 & |
| | | | | | 3 | 2 |
|--------+--------+------------+-------+-------+------+------|
| 266MHz | 66MHz | 4x | 2 & 3 | 1 & 2 | 2 & | 1 & |
| | | | | | 3 | 2 |
|--------+--------+------------+-------+-------+------+------|
| 300MHz | 66MHz | 4.5x | 2 & 3 | 1 & 2 | 2 & | 1 & |
| | | | | | 3 | 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AM K6, CON’T) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP14 | JP15 | JP16 |
| speed | speed | | | | |
|---------+----------+------------+--------+--------+--------|
| 166MHz | 66MHz | 2.5x | Closed | Open | Closed |
|---------+----------+------------+--------+--------+--------|
| 200MHz | 66MHz | 3x | Closed | Open | Open |
|---------+----------+------------+--------+--------+--------|
| 233MHz | 66MHz | 3.5x | Open | Open | Open |
|---------+----------+------------+--------+--------+--------|
| 266MHz | 66MHz | 4x | Open | Closed | Closed |
|---------+----------+------------+--------+--------+--------|
| 300MHz | 66MHz | 4.5x | Closed | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AM K6-2) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP10 | JP11 | JP12 | JP13 |
| speed | speed | | | | | |
|--------+--------+------------+-------+-------+------+------|
| 266MHz | 66MHz | 4x | 2 & 3 | 1 & 2 | 2 & | 1 & |
| | | | | | 3 | 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AM K6-2, CON’T) |
|------------------------------------------------------------|
| CPU speed | Clock | Multiplier | JP14 | JP15 | JP16 |
| | speed | | | | |
|-----------+----------+------------+------+--------+--------|
| 266MHz | 66MHz | 4x | Open | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP10 | JP11 | JP12 | JP13 |
| speed | speed | | | | | |
|--------+--------+------------+-------+-------+------+------|
| 90MHz | 60MHz | 1.5x | 2 & 3 | 2 & 3 | 1 & | 1 & |
| | | | | | 2 | 2 |
|--------+--------+------------+-------+-------+------+------|
| 100MHz | 66MHz | 1.5x | 2 & 3 | 1 & 2 | 2 & | 1 & |
| | | | | | 3 | 2 |
|--------+--------+------------+-------+-------+------+------|
| 120MHz | 60MHz | 2x | 2 & 3 | 2 & 3 | 1 & | 1 & |
| | | | | | 2 | 2 |
|--------+--------+------------+-------+-------+------+------|
| 133MHz | 66MHz | 2x | 2 & 3 | 1 & 2 | 2 & | 1 & |
| | | | | | 3 | 2 |
|--------+--------+------------+-------+-------+------+------|
| 150MHz | 60MHz | 2.5x | 2 & 3 | 2 & 3 | 1 & | 1 & |
| | | | | | 2 | 2 |
|--------+--------+------------+-------+-------+------+------|
| 166MHz | 66MHz | 2.5x | 2 & 3 | 1 & 2 | 2 & | 1 & |
| | | | | | 3 | 2 |
|--------+--------+------------+-------+-------+------+------|
| 180MHz | 60MHz | 3x | 2 & 3 | 2 & 3 | 1 & | 1 & |
| | | | | | 2 | 2 |
|--------+--------+------------+-------+-------+------+------|
| 200MHz | 66MHz | 3x | 2 & 3 | 1 & 2 | 2 & | 1 & |
| | | | | | 3 | 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL, CON’T) |
|------------------------------------------------------------|
| CPU speed | Clock | Multiplier | JP14 | JP15 | JP16 |
| | speed | | | | |
|-----------+----------+------------+--------+------+--------|
| 90MHz | 60MHz | 1.5x | Open | Open | Open |
|-----------+----------+------------+--------+------+--------|
| 100MHz | 66MHz | 1.5x | Open | Open | Open |
|-----------+----------+------------+--------+------+--------|
| 120MHz | 60MHz | 2x | Open | Open | Closed |
|-----------+----------+------------+--------+------+--------|
| 133MHz | 66MHz | 2x | Open | Open | Closed |
|-----------+----------+------------+--------+------+--------|
| 150MHz | 60MHz | 2.5x | Closed | Open | Closed |
|-----------+----------+------------+--------+------+--------|
| 166MHz | 66MHz | 2.5x | Closed | Open | Closed |
|-----------+----------+------------+--------+------+--------|
| 180MHz | 60MHz | 3x | Closed | Open | Open |
|-----------+----------+------------+--------+------+--------|
| 200MHz | 66MHz | 3x | Closed | Open | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL MMX) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP10 | JP11 | JP12 | JP13 |
| speed | speed | | | | | |
|--------+--------+------------+-------+-------+------+------|
| 180MHz | 60MHz | 3x | 2 & 3 | 2 & 3 | 1 & | 1 & |
| | | | | | 2 | 2 |
|--------+--------+------------+-------+-------+------+------|
| 200MHz | 66MHz | 3x | 2 & 3 | 1 & 2 | 2 & | 1 & |
| | | | | | 3 | 2 |
|--------+--------+------------+-------+-------+------+------|
| 233MHz | 66MHz | 3.5x | 2 & 3 | 1 & 2 | 2 & | 1 & |
| | | | | | 3 | 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL MMX, CON’T) |
|------------------------------------------------------------|
| CPU speed | Clock | Multiplier | JP14 | JP15 | JP16 |
| | speed | | | | |
|-----------+------------+------------+--------+------+------|
| 180MHz | 60MHz | 3x | Closed | Open | Open |
|-----------+------------+------------+--------+------+------|
| 200MHz | 66MHz | 3x | Closed | Open | Open |
|-----------+------------+------------+--------+------+------|
| 233MHz | 66MHz | 3.5x | Open | Open | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION |
|------------------------------------------------------------|
| Voltage | JP17 |
|----------------------------+-------------------------------|
| » | Single | Open |
|---+------------------------+-------------------------------|
| | Dual | Pins 1 & 2, 3 & 4 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION |
|------------------------------------------------------------|
|Voltage |JP30/pins |JP30/pins |JP30/pins|JP30/pins|JP30/pins|
| | | | | | |
| | 1 & 2 | 3 & 4 | 5 & 6 | 7 & 8 | 9 & 10 |
|--------+----------+----------+---------+---------+---------|
| 2.2v | Open | Open | Open | Closed | Open |
|--------+----------+----------+---------+---------+---------|
| 2.8v | Open | Closed | Open | Open | Open |
|--------+----------+----------+---------+---------+---------|
| 2.9v | Open | Closed | Open | Open | Closed |
|--------+----------+----------+---------+---------+---------|
| 3.2v | Open | Closed | Closed | Open | Open |
|--------+----------+----------+---------+---------+---------|
| 3.52v | Open | Closed | Closed | Closed | Closed |
+------------------------------------------------------------+