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# SOYO COMPUTER CO., LTD.
5V A0/A2/A5
Processor CX M1/AM K5/Pentium
Processor Speed 75/90/100/120/133/150/166/180/200MHz
Chip Set Intel
Video Chip Set None
Maximum Onboard 128MB (EDO supported)
Memory
Maximum Video None
Memory
Cache 256/512KB
BIOS Award
Dimensions 330mm 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), cache slot
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| Serial port 2 | CN1 | Power LED & | J17 |
| | | keylock | |
|-------------------+----------+------------------+----------|
| Serial port 1 | CN2 | Speaker | J18 |
|-------------------+----------+------------------+----------|
| Floppy drive | CN3 | Reset switch | J19 |
| interface | | | |
|-------------------+----------+------------------+----------|
| Parallel port | CN4 | Green PC | J23 |
| | | connector | |
|-------------------+----------+------------------+----------|
| IDE interface 2 | CN5 | IDE interface | J24 |
| | | LED | |
|-------------------+----------+------------------+----------|
| IDE interface 1 | CN6 | 32-bit PCI slots | PC1 - |
| | | | PC4 |
|-------------------+----------+------------------+----------|
| PS/2 mouse port | CN7 | Cache slot | SL1 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-------------------------------------+-------+--------------|
| » | Factory configured - do not | JP1 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | CMOS memory normal operation | JP5 | Open |
|---+---------------------------------+-------+--------------|
| | CMOS memory clear | JP5 | Closed |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP22 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP35 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | PS/2 mouse disabled | JPS2 | Open |
|---+---------------------------------+-------+--------------|
| | PS/2 mouse enabled | JPS2 | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM/DIMM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|------------+---------------+---------------+---------------|
| 4MB | (2) 512K x 36 | None | None |
|------------+---------------+---------------+---------------|
| 8MB | (2) 1M x 36 | None | None |
|------------+---------------+---------------+---------------|
| 8MB | (2) 512K x 36 | (2) 512K x 36 | None |
|------------+---------------+---------------+---------------|
| 12MB | (2) 1M x 36 | (2) 512K x 36 | None |
|------------+---------------+---------------+---------------|
| 12MB | None | (2) 512K x 36 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 16MB | (2) 2M x 36 | None | None |
|------------+---------------+---------------+---------------|
| 16MB | (2) 1M x 36 | (2) 1M x 36 | None |
|------------+---------------+---------------+---------------|
| 16MB | None | (2) 1M x 36 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 20MB | (2) 2M x 36 | (2) 512K x 36 | None |
|------------+---------------+---------------+---------------|
| 20MB | None | (2) 512K x 36 | (1) 2M x 64 |
|------------+---------------+---------------+---------------|
| 24MB | None | (2) 1M x 36 | (1) 2M x 64 |
|------------+---------------+---------------+---------------|
| 24MB | None | (2) 2M x 36 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 24MB | (2) 1M x 36 | (2) 2M x 36 | None |
|------------+---------------+---------------+---------------|
| 32MB | None | (2) 2M x 36 | (1) 2M x 64 |
|------------+---------------+---------------+---------------|
| 32MB | (2) 4M x 36 | None | None |
|------------+---------------+---------------+---------------|
| 32MB | (2) 2M x 36 | (2) 2M x 36 | None |
|------------+---------------+---------------+---------------|
| 36MB | None | (2) 512K x 36 | (1) 4M x 64 |
|------------+---------------+---------------+---------------|
| 36MB | (2) 4M x 36 | (2) 512K x 36 | None |
|------------+---------------+---------------+---------------|
| 40MB | None | (2) 1M x 36 | (1) 4M x 64 |
|------------+---------------+---------------+---------------|
| 40MB | None | (2) 4M x 36 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 40MB | (2) 1M x 36 | (2) 4M x 36 | None |
|------------+---------------+---------------+---------------|
| 48MB | None | (2) 4M x 36 | (1) 2M x 64 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM/DIMM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|---------+---------------+------------------+---------------|
| 48MB | None | (2) 2M x 36 | (1) 4M x 64 |
|---------+---------------+------------------+---------------|
| 48MB | (2) 4M x 36 | (2) 2M x 36 | None |
|---------+---------------+------------------+---------------|
| 64MB | None | (2) 4M x 36 | (1) 4M x 64 |
|---------+---------------+------------------+---------------|
| 64MB | (2) 8M x 36 | None | None |
|---------+---------------+------------------+---------------|
| 64MB | (2) 4M x 36 | (2) 4M x 36 | None |
|---------+---------------+------------------+---------------|
| 68MB | None | (2) 512K x 36 | (1) 8M x 64 |
|---------+---------------+------------------+---------------|
| 68MB | (2) 8M x 36 | (2) 512K x 36 | None |
|---------+---------------+------------------+---------------|
| 72MB | None | (2) 1M x 36 | (1) 8M x 64 |
|---------+---------------+------------------+---------------|
| 72MB | None | (2) 8M x 36 | (1) 1M x 64 |
|---------+---------------+------------------+---------------|
| 72MB | (2) 1M x 36 | (2) 8M x 36 | None |
|---------+---------------+------------------+---------------|
| 80MB | None | (2) 8M x 36 | (1) 2M x 64 |
|---------+---------------+------------------+---------------|
| 80MB | None | (2) 2M x 36 | (1) 8M x 64 |
|---------+---------------+------------------+---------------|
| 80MB | (2) 8M x 36 | (2) 2M x 36 | None |
|---------+---------------+------------------+---------------|
| 96MB | None | (2) 8M x 36 | (1) 4M x 64 |
|---------+---------------+------------------+---------------|
| 96MB | None | (2) 4M x 36 | (1) 8M x 64 |
|---------+---------------+------------------+---------------|
| 96MB | (2) 4M x 36 | (2) 8M x 36 | None |
|---------+---------------+------------------+---------------|
| 128MB | None | (2) 8M x 36 | (1) 8M x 64 |
|---------+---------------+------------------+---------------|
| 128MB | (2) 8M x 36 | (2) 8M x 36 | None |
|------------------------------------------------------------|
| Note: Board accepts EDO memory. Board also accepts x 32 |
| SIMMs. Banks are interchangeable. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM VOLTAGE CONFIGURATION |
|------------------------------------------------------------|
| Voltage | JP37 | JP38 |
|------------------+--------------------+--------------------|
| » | 3.3v | Pins 2 & 3 closed | Pins 2 & 3 closed |
|---+--------------+--------------------+--------------------|
| | 5v | Pins 1 & 2 closed | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | SL1 | TAG |
|-------+--------------+-----------------------+-------------|
| 256KB | None | 256KB module | (1) 16K x 8 |
| | | installed | |
|-------+--------------+-----------------------+-------------|
| 256KB | (2) 32K x 32 | None installed | (1) 16K x 8 |
|-------+--------------+-----------------------+-------------|
| 512KB | (2) 32K x 32 | 256KB module | (1) 16K x 8 |
| | | installed | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP20 |
|-----------------------------+------------------------------|
| 256KB | Open |
|-----------------------------+------------------------------|
| 512KB | Closed |
|------------------------------------------------------------|
| Note: JP20 may be labeled as JP7 on some versions. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CYRIX) |
|------------------------------------------------------------|
|CPU speed|Clock speed|Multiplier| JP10 | JP11 | JP13 |JP14|
|---------+-----------+----------+-------+-------+------+----|
| 120MHz | 50MHz | 2x |Closed |Closed |Closed|Open|
|---------+-----------+----------+-------+-------+------+----|
| 133MHz | 55MHz | 2x | Open | Open |Closed|Open|
|---------+-----------+----------+-------+-------+------+----|
| 150MHz | 60MHz | 2x | Open |Closed |Closed|Open|
|---------+-----------+----------+-------+-------+------+----|
| 166MHz | 66MHz | 2x |Closed | Open |Closed|Open|
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AMD) |
|------------------------------------------------------------|
|CPU speed|Clock speed|Multiplier| JP10 | JP11 | JP13 |JP14|
|---------+-----------+----------+-------+-------+------+----|
| 75MHz | 50MHz | 1.5x |Closed |Closed | Open |Open|
|---------+-----------+----------+-------+-------+------+----|
| 90MHz | 55MHz | 1.5x | Open | Open | Open |Open|
|---------+-----------+----------+-------+-------+------+----|
| 100MHz | 55MHz | 1.5x | Open | Open | Open |Open|
|---------+-----------+----------+-------+-------+------+----|
| 90MHz | 60MHz | 1.5x | Open |Closed | Open |Open|
|---------+-----------+----------+-------+-------+------+----|
| 100MHz | 66MHz | 1.5x |Closed | Open | Open |Open|
|---------+-----------+----------+-------+-------+------+----|
| 120MHz | 60MHz | 1.5x | Open |Closed | Open |Open|
|---------+-----------+----------+-------+-------+------+----|
| 133MHz | 66MHz | 1.5x |Closed | Open | Open |Open|
|---------+-----------+----------+-------+-------+------+----|
| 150MHz | 60MHz | 2x | Open |Closed |Closed|Open|
|---------+-----------+----------+-------+-------+------+----|
| 166MHz | 66MHz | 2x |Closed | Open |Closed|Open|
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL) |
|------------------------------------------------------------|
|CPU speed|Clock speed|Multiplier| JP10 | JP11 | JP13 | JP14 |
|---------+-----------+----------+------+------+------+------|
| 75MHz | 50MHz | 1.5x |Closed|Closed| Open | Open |
|---------+-----------+----------+------+------+------+------|
| 90MHz | 60MHz | 1.5x | Open |Closed| Open | Open |
|---------+-----------+----------+------+------+------+------|
| 100MHz | 50MHz | 2x |Closed|Closed|Closed| Open |
|---------+-----------+----------+------+------+------+------|
| 100MHz | 66MHz | 1.5x |Closed| Open | Open | Open |
|---------+-----------+----------+------+------+------+------|
| 120MHz | 60MHz | 2x | Open |Closed|Closed| Open |
|---------+-----------+----------+------+------+------+------|
| 133MHz | 66MHz | 2x |Closed| Open |Closed| Open |
|---------+-----------+----------+------+------+------+------|
| 150MHz | 60MHz | 2.5x | Open |Closed|Closed|Closed|
|---------+-----------+----------+------+------+------+------|
| 166MHz | 66MHz | 2.5x |Closed| Open |Closed|Closed|
|---------+-----------+----------+------+------+------+------|
| 180MHz | 60MHz | 3x | Open |Closed| Open |Closed|
|---------+-----------+----------+------+------+------+------|
| 200MHz | 66MHz | 3x |Closed| Open | Open |Closed|
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION |
|------------------------------------------------------------|
| Voltage | JP30 | JP31 |
|---------------------------+----------------+---------------|
| » | 3.3v (Standard or VR) | Closed | Open |
|---+-----------------------+----------------+---------------|
| | 3.45v - 3.6v (VRE) | Open | Closed |
+------------------------------------------------------------+