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# SOYO COMPUTER CO., LTD.
SY-5EH5
Device Type Mainboard
Processor CX 6X86/CX 6X86L/CX 686MX/AM K5/AM K6/
AM K6-2/Pentium/Pentium MMX
Processor Speed 90/100/120/133/150/166/180/200/233/250/266Hz
Chip Set VIA VP3
Video Chip Set None
Maximum Onboard 128MB (EDO & SDRAM supported)
Memory
Maximum Video None
Memory
Cache 512KB
BIOS Award
Dimensions 254mm x 218mm
I/O Options 32-bit PCI slots (3), floppy drive interface,
IDE interfaces (2), parallel port, PS/2 mouse
interface, serial ports (2), IR connector,
USB connector, ATX power connector, AGP slot,
wake on LAN connector
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| AGP slot | AGP | Reset switch | J25A |
|-------------------+----------+------------------+----------|
| ATX power | ATX | Soft off power | J25B |
| connector | | supply | |
|-------------------+----------+------------------+----------|
| Parallel port | CN1 | Turbo LED | J25C |
|-------------------+----------+------------------+----------|
| Serial port 1 | CN2 | IDE interface | J25D |
| | | LED | |
|-------------------+----------+------------------+----------|
| Serial port 2 | CN3 | Power LED & | J25E |
| | | keylock | |
|-------------------+----------+------------------+----------|
| IDE interface 1 | CN4 | Speaker | J25F |
|-------------------+----------+------------------+----------|
| IDE interface 2 | CN5 | CPU fan power | JP12 |
|-------------------+----------+------------------+----------|
| Floppy drive | CN6 | Wake on LAN | JP44 |
| interface | | connector | |
|-------------------+----------+------------------+----------|
| PS/2 mouse | CN7 | 32-bit PCI slots | PC1 – |
| interface | | | PC3 |
|-------------------+----------+------------------+----------|
| IR connector | IR1 | USB connector | USB |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|--------------------------------------+-------+-------------|
| | CPU voltage select auto | JP4 | Closed |
|---+----------------------------------+-------+-------------|
| | CPU voltage select manual | JP4 | Open |
|---+----------------------------------+-------+-------------|
| » | CMOS memory normal operation | JP5 | Pins 1 & 2 |
| | | | closed |
|---+----------------------------------+-------+-------------|
| | CMOS memory clear | JP5 | Pins 2 & 3 |
| | | | closed |
|---+----------------------------------+-------+-------------|
| | CPU burst mode select interleave | JP22 | Pins 1 & 2 |
| | | | closed |
|---+----------------------------------+-------+-------------|
| | CPU burst mode select linear | JP22 | Pins 2 & 3 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SIMM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 |
|----------------------------+-------------------------------|
| 8MB | (2) 1M x 36 |
|----------------------------+-------------------------------|
| 16MB | (2) 2M x 36 |
|----------------------------+-------------------------------|
| 32MB | (2) 4M x 36 |
|----------------------------+-------------------------------|
| 64MB | (2) 8M x 36 |
|------------------------------------------------------------|
| Note: Board accepts EDO memory. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 1 | Bank 2 |
|------------------+--------------------+--------------------|
| 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 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 1 | Bank 2 |
|------------------+--------------------+--------------------|
| 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 |
|------------------------------------------------------------|
| Note: Board accepts EDO & SDRAM memory. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM VOLTAGE CONFIGURATION |
|------------------------------------------------------------|
| Voltage | JP37 |
|----------------------------+-------------------------------|
| » | 3.3v | Pins 1 & 3, 2 & 4 closed |
|---+------------------------+-------------------------------|
| | 5v | Pins 3 & 5, 4 & 6 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM FREQUENCY CONFIGURATION |
|------------------------------------------------------------|
| Frequency | JP9 | JP10 |
|------------------+--------------------+--------------------|
| » | SDRAM = CPU | Pins 2 & 3 closed | Pins 1 & 2 closed |
|---+--------------+--------------------+--------------------|
| | SDRAM = AGP | Pins 1 & 2 closed | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | TAG |
|------------------+--------------------+--------------------|
| 512KB | (1) 64K x 64 | (1) 16K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86) |
|------------------------------------------------------------|
| CPU |Clock|Multiplier|SW1/1|SW1/2|SW1/3|SW1/4|SW1/5|SW1/6|
| speed |speed| | | | | | | |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|150MHz |60MHz| 2x | On | Off | Off | On | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|166MHz |66MHz| 2x | On | Off | Off | Off | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|200MHz |75MHz| 2x | On | Off | Off | Off | On | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86L) |
|------------------------------------------------------------|
| CPU |Clock|Multiplier|SW1/1|SW1/2|SW1/3|SW1/4|SW1/5|SW1/6|
| speed |speed| | | | | | | |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|150MHz |60MHz| 2x | On | Off | Off | On | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|166MHz |66MHz| 2x | On | Off | Off | Off | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|200MHz |75MHz| 2x | On | Off | Off | Off | On | 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 |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|200MHz |66MHz| 2.5x | On | On | Off | On | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|200MHz |75MHz| 2x | On | Off | Off | Off | On | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|233MHz |75MHz| 2.5x | On | On | Off | Off | On | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|233MHz |66MHz| 3x | Off | On | Off | On | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|266MHz |83MHz| 2.5x | On | On | Off | On | On | 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| 1.5x | Off | Off | Off | On | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|133MHz |66MHz| 2x | On | Off | Off | Off | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|166MHz |66MHz| 2.5x | On | On | Off | Off | Off | 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 |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|180MHz |66MHz| 3x | Off | On | Off | On | 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 K6 2) |
|------------------------------------------------------------|
| CPU |Clock |Multiplier|SW1/1|SW1/2|SW1/3|SW1/4|SW1/5|SW1/6|
|speed |speed | | | | | | | |
|------+------+----------+-----+-----+-----+-----+-----+-----|
|250MHz|100MHz| 2.5x | On | On | Off | Off | Off | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|180MHz |66MHz| 3x | Off | On | Off | On | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|200MHz |66MHz| 3x | Off | On | Off | Off | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL MMX) |
|------------------------------------------------------------|
| 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 |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|180MHz |66MHz| 3x | Off | On | Off | On | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|200MHz |66MHz| 3x | Off | On | Off | Off | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|233MHz |66MHz| 3.5x | Off | Off | Off | Off | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION |
|------------------------------------------------------------|
| Voltage | JP30 |
|--------------------------+---------------------------------|
| 2.0v | Open |
|--------------------------+---------------------------------|
| 2.1v | Pins 5 & 6 closed |
|--------------------------+---------------------------------|
| 2.2v | Pins 3 & 4 closed |
|--------------------------+---------------------------------|
| 2.3v | Pins 3 & 4, 5 & 6 closed |
|--------------------------+---------------------------------|
| 2.4v | Pins 7 & 8 closed |
|--------------------------+---------------------------------|
| 2.5v | Pins 5 & 6, 7 & 8 closed |
|--------------------------+---------------------------------|
| 2.6v | Pins 3 & 4, 7 & 8 closed |
|--------------------------+---------------------------------|
| 2.7v | Pins 3 & 4, 5 & 6, 7 & 8 closed |
|--------------------------+---------------------------------|
| 2.8v | Pins 1 & 2, 11 & 12 closed |
|--------------------------+---------------------------------|
| 2.9v | Pins 1 & 2, 5 & 6 closed |
|--------------------------+---------------------------------|
| 3.0v | Pins 1 & 2, 3 & 4 closed |
|--------------------------+---------------------------------|
| 3.1v | Pins 1 & 2, 3 & 4, 5 & 6 closed |
|--------------------------+---------------------------------|
| 3.2v | Pins 1 & 2, 7 & 8 closed |
|--------------------------+---------------------------------|
| 3.3v | Pins 1 & 2, 9 & 10 closed |
|--------------------------+---------------------------------|
| 3.4v | Pins 1 & 2, 3 & 4, 7 & 8 closed |
|--------------------------+---------------------------------|
| 3.5v | Pins 1 & 2, 11 & 12 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| POWER SUPPLY SELECTION |
|------------------------------------------------------------|
| Type | JP2 | JP6 |
|------------------+--------------------+--------------------|
| » | AT | Pins 2 & 3 closed | Pins 2 & 3 closed |
|---+--------------+--------------------+--------------------|
| | ATX | Pins 1 & 2 closed | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| HOST BUS FREQUENCY SELECTION |
|------------------------------------------------------------|
| CPU host | AGP host | PCI hose | JP7 | JP8 |
| bus | bus | bus | | |
|-------------+----------+----------+------------+-----------|
| » | 66MHz | 66MHz | 33MHz | Pins 2 & 3 | Open |
| | | | | closed | |
|---+---------+----------+----------+------------+-----------|
| | 100MHz | 66MHz | 33MHz | Pins 1 & 2 | Pins 2 & |
| | | | | closed | 3 closed |
+------------------------------------------------------------+