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# SOYO COMPUTER CO., LTD.
5XB5
Processor CX 6X86/CX 6X86L/CX 6X86MX/AM K5/AM
K6/Pentium
Processor Speed 75/90/100/120/133/150/166/180/200/233MHz
Chip Set Unidentified
Video Chip Set None
Maximum Onboard 256MB (EDO supported)
Memory
Maximum Video None
Memory
Cache 512KB
BIOS Unidentified
Dimensions 254mm x 218mm
I/O Options 32-bit PCI slots (4), floppy drive interface,
green PC connector, IDE interfaces (2),
parallel port, PS/2 mouse port, serial ports
(2), IR connector, USB connector, ATX
connector
NPU Options None
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| ATX power | ATX | Speaker | J18 |
| connector | | | |
|-------------------+----------+------------------+----------|
| Floppy drive | CN1 | Reset switch | J19 |
| interface | | | |
|-------------------+----------+------------------+----------|
| Parallel port | CN2 | Turbo LED | J22 |
|-------------------+----------+------------------+----------|
| Serial port 2 | CN3 | IDE interface | J24 |
| | | LED | |
|-------------------+----------+------------------+----------|
| Serial port 1 | CN4 | CPU cooling fan | JP43 |
|-------------------+----------+------------------+----------|
| IDE interface 2 | CN5 | Wake on LAN | JP44 |
| | | connector | |
|-------------------+----------+------------------+----------|
| IDE interface 1 | CN6 | 32-bit PCI slots | PC1 – |
| | | | PC4 |
|-------------------+----------+------------------+----------|
| PS/2 mouse port | CN7 | Soft off power | PW2 |
| | | supply | |
|-------------------+----------+------------------+----------|
| IR connector | IR1 | USB connector | USB |
|-------------------+----------+------------------+----------|
| Power LED & | J17 | | |
| keylock | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|---------------------------------------+-------+------------|
| » | Power supply select AT | JP1 | Closed |
|---+-----------------------------------+-------+------------|
| | Power supply select ATX | JP1 | Open |
|---+-----------------------------------+-------+------------|
| » | CMOS memory normal operation | JP5 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | CMOS memory clear | JP5 | Pins 2 & 3 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| » | Flash BIOS select SST, MXIC, | JP38 | Pins 2 & 3 |
| | WINBON, ATMEL | | closed |
|---+-----------------------------------+-------+------------|
| | Flash BIOS Intel | JP38 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | CE test disabled | JP40 | Closed |
|---+-----------------------------------+-------+------------|
| | CE test enabled | JP40 | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM/SIMM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|------+-------------+-------------+------------+------------|
| 8MB | None | (1) 1M x 64 | None | None |
|------+-------------+-------------+------------+------------|
| 8MB | (2) 1M x 36 | None | None | None |
|------+-------------+-------------+------------+------------|
| 16MB | None | (1) 2M x 64 | None | None |
|------+-------------+-------------+------------+------------|
| 16MB | (2) 2M x 36 | None | None | None |
|------+-------------+-------------+------------+------------|
| 16MB | None | (1) 1M x 64 | (1) 1M x | None |
| | | | 64 | |
|------+-------------+-------------+------------+------------|
| 16MB | (2) 1M x 36 | (1) 1M x 64 | None | None |
|------+-------------+-------------+------------+------------|
| 24MB | None | (1) 1M x 64 | (1) 1M x | (1) 1M x |
| | | | 64 | 64 |
|------+-------------+-------------+------------+------------|
| 24MB | (2) 1M x 36 | (1) 1M x 64 | (1) 1M x | None |
| | | | 64 | |
|------+-------------+-------------+------------+------------|
| 32MB | None | (1) 4M x 64 | None | None |
|------+-------------+-------------+------------+------------|
| 32MB | (2) 4M x 36 | None | None | None |
|------+-------------+-------------+------------+------------|
| 32MB | None | (1) 2M x 64 | (1) 2M x | None |
| | | | 64 | |
|------+-------------+-------------+------------+------------|
| 32MB | (2) 1M x 36 | (1) 1M x 64 | (1) 1M x | (1) 1M x |
| | | | 64 | 64 |
|------+-------------+-------------+------------+------------|
| 40MB | (2) 1M x 36 | (1) 2M x 64 | (1) 2M x | None |
| | | | 64 | |
|------+-------------+-------------+------------+------------|
| 40MB | (2) 1M x 36 | None | (1) 4M x | None |
| | | | 64 | |
|------+-------------+-------------+------------+------------|
| 48MB | None | (1) 2M x 64 | (1) 2M x | (1) 2M x |
| | | | 64 | 64 |
|------+-------------+-------------+------------+------------|
| 64MB | None | (1) 8M x 64 | None | None |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM/SIMM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|--------+--------------+-------------+-------------+--------|
| 64MB | (2) 8M x 36 | None | None | None |
|--------+--------------+-------------+-------------+--------|
| 64MB | None | (1) 4M x 64 | (1) 4M x 64 | None |
|--------+--------------+-------------+-------------+--------|
| 72MB | (2) 1M x 36 | None | (1) 8M x 64 | None |
|--------+--------------+-------------+-------------+--------|
| 128MB | (2) 16M x 36 | None | None | None |
|--------+--------------+-------------+-------------+--------|
| 256MB | (2) 8M x 36 | (1) 8M x 64 | (1) 8M x 64 | None |
|------------------------------------------------------------|
| Note: Board accepts EDO memory. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM VOLTAGE CONFIGURATION |
|------------------------------------------------------------|
| Voltage | JP37A | JP37B |
|------------------+--------------------+--------------------|
| 3.3v | Pins 2 & 3 closed | Pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 5v | Pins 1 & 2 closed | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | TAG |
|------------------+--------------------+--------------------|
| 512KB | (2) 64K x 32 | (1) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86/6X 86L) |
|------------------------------------------------------------|
| CPU |Clock|Multiplier|SW1/1|SW1/2|SW1/3|SW1/4|SW1/5|SW1/6|
| speed |speed| | | | | | | |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|150MHz |60MHz| 2x | On | Off | On | Off | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|166MHz |66MHz| 2x | On | Off | Off | Off | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|200MHz |75MHz| 2x | On | Off | Off | On | 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 | On | Off | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|166MHz |66MHz| 2x | On | Off | Off | Off | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|200MHz |66MHz| 2.5x | On | On | Off | Off | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|200MHz |75MHz| 2x | On | Off | Off | On | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|233MHz |66MHz| 3x | Off | On | Off | Off | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|233MHz |75MHz| 2.5x | On | On | Off | On | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AM K5) |
|------------------------------------------------------------|
| CPU |Clock|Multiplier|SW1/1|SW1/2|SW1/3|SW1/4|SW1/5|SW1/6|
| speed |speed| | | | | | | |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
| 75MHz |50MHz| 1.5x | Off | Off | On | On | On | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
| 90MHz |60MHz| 1.5x | Off | Off | On | Off | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|100MHz |66MHz| 1.5x | Off | Off | Off | Off | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|120MHz |60MHz| 1.5x | Off | Off | On | Off | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|133MHz |66MHz| 1.5x | Off | Off | Off | Off | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|150MHz |60MHz| 2.5x | On | On | On | 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 |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|200MHz |66MHz| 3x | Off | On | Off | Off | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|233MHz |66MHz| 3.5x | Off | Off | 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| | | | | | | |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
| 75MHz |50MHz| 1.5x | Off | Off | On | On | On | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
| 90MHz |60MHz| 1.5x | Off | Off | On | Off | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|100MHz |66MHz| 1.5x | Off | Off | Off | Off | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|120MHz |60MHz| 2x | On | Off | On | Off | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|133MHz |66MHz| 2x | On | Off | Off | Off | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|150MHz |60MHz| 2.5x | On | On | On | Off | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|166MHz |66MHz| 2.5x | On | On | Off | Off | Off | Off |
|-------+-----+----------+-----+-----+-----+-----+-----+-----|
|180MHz |60MHz| 3x | Off | On | On | 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 | JP30 |
|----------------------------+-------------------------------|
| | 3.3v | Pins 1 & 2, 9 & 10 closed |
|---+------------------------+-------------------------------|
| » | 3.52v | Pins 1 & 2, 11 & 12 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION (DUAL) |
|------------------------------------------------------------|
| Voltage | JP30 |
|----------------------------+-------------------------------|
| | 2.1v | Pins 5 & 6 closed |
|---+------------------------+-------------------------------|
| » | 2.8v | Pins 1 & 2, 11 & 12 closed |
|---+------------------------+-------------------------------|
| | 2.9v | Pins 1 & 2, 5 & 6 closed |
|---+------------------------+-------------------------------|
| | 3.2v | Pins 1 & 2, 7 & 8 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MISCELLANEOUS TECHNICAL NOTE |
|------------------------------------------------------------|
| If board has problems detecting voltage on older |
| version non Intel CPUs, remove the jumper from JP9. |
+------------------------------------------------------------+