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# SOYO COMPUTER CO., LTD.
SY-5TA2, SY-5TA5
Device Type Mainboard
Processor Pentium
Processor Speed 75/90/100/120/133/150MHz
Chip Set Intel
Video Chip Set None
Maximum Onboard 128MB (EDO supported)
Memory
Maximum Video None
Memory
Cache 256/512KB
BIOS Unidentified
Dimensions 254mm x 218mm
I/O Options 32-bit PCI slots (4), green PC connector,
floppy drive interface, IDE interfaces (2),
parallel port, serial ports (2), VRM
connector
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| Serial port 1 | CN1 | Speaker | J18 |
|-------------------+----------+------------------+----------|
| Serial port 2 | CN2 | Reset switch | J19 |
|-------------------+----------+------------------+----------|
| Floppy drive | CN3 | Turbo LED | J22 |
| interface | | | |
|-------------------+----------+------------------+----------|
| Parallel port | CN4 | Green PC | JP15 |
| | | connector | |
|-------------------+----------+------------------+----------|
| IDE interface 2 | CN5 | IDE interface | JP16 |
| | | LED | |
|-------------------+----------+------------------+----------|
| IDE interface 1 | CN6 | 32-bit PCI slots | PC1 – |
| | | | PC4 |
|-------------------+----------+------------------+----------|
| Power LED & | J17 | VRM connector | VRM |
| keylock | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-------------------------------------+-------+--------------|
| » | Factory configured - do not | J3 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Monitor type select EGA/VGA | JP3 | Closed |
|---+---------------------------------+-------+--------------|
| | Monitor type select monochrome | JP3 | Open |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP4 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP5 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP13 | Closed |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP14 | Pins 1 & 2 |
| | alter | | closed |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP21 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP22 | Open |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP23 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP24 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP25 | Closed |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP26 | Closed |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Pipeline address enabled | JP30 | Closed |
|---+---------------------------------+-------+--------------|
| | Pipeline address disabled | JP30 | Open |
|---+---------------------------------+-------+--------------|
| » | Cache type select write back | JP31 | Open |
|---+---------------------------------+-------+--------------|
| | Cache type select write through | JP31 | Closed |
|---+---------------------------------+-------+--------------|
| » | CMOS memory normal operation | JP32 | Open |
|---+---------------------------------+-------+--------------|
| | CMOS memory clear | JP32 | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SIMM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 2MB | (2) 256K x 36 | None |
|------------------+--------------------+--------------------|
| 4MB | (2) 512K x 36 | None |
|------------------+--------------------+--------------------|
| 4MB | (2) 256K x 36 | (2) 256K x 36 |
|------------------+--------------------+--------------------|
| 6MB | (2) 512K x 36 | (2) 256K x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SIMM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 8MB | (2) 1M x 36 | None |
|------------------+--------------------+--------------------|
| 8MB | (2) 512K x 36 | (2) 512K x 36 |
|------------------+--------------------+--------------------|
| 10MB | (2) 1M x 36 | (2) 256K x 36 |
|------------------+--------------------+--------------------|
| 12MB | (2) 512K x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 16MB | (2) 2M x 36 | None |
|------------------+--------------------+--------------------|
| 16MB | (2) 1M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 18MB | (2) 2M x 36 | (2) 256K x 36 |
|------------------+--------------------+--------------------|
| 20MB | (2) 512K x 36 | (2) 2M 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 |
|------------------+--------------------+--------------------|
| 34MB | (2) 4M x 36 | (2) 256K x 36 |
|------------------+--------------------+--------------------|
| 36MB | (2) 512K x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 40MB | (2) 4M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 48MB | (2) 2M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 64MB | (2) 8M x 36 | None |
|------------------+--------------------+--------------------|
| 64MB | (2) 4M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 68MB | (2) 8M x 36 | (2) 512K x 36 |
|------------------+--------------------+--------------------|
| 72MB | (2) 1M x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 80MB | (2) 8M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 96MB | (2) 4M x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 128MB | (2) 8M x 36 | (2) 8M x 36 |
|------------------------------------------------------------|
| Note: Board accepts EDO memory. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | TAG |
|------------------+--------------------+--------------------|
| 256KB | (8) 32K x 8 | (1) 8K/16K x 8 |
|------------------+--------------------+--------------------|
| 512KB | (8) 64K x 8 | (1) 16K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP12 | JP27 | JP28 |
|-------+-----------------+-----------------+----------------|
| 256KB | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 |
| | closed | closed | closed |
|-------+-----------------+-----------------+----------------|
| 512KB | Pins 2 & 3 | Pins 2 & 3 | Pins 2 & 3 |
| | closed | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE VOLTAGE CONFIGURATION |
|------------------------------------------------------------|
| Voltage | JP1 | JP2 |
|---------+-------------------------+------------------------|
| 3.3v | Open | Pins 1 & 2, 3 & 4, 5 & |
| | | 6 closed |
|---------+-------------------------+------------------------|
| Mixed | Pins 1 & 2, 3 & 4, 5 & | Open |
| | 6 closed | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION |
|------------------------------------------------------------|
| CPU | Clock |Multiplier|JP17 | JP18 | JP19 | JP29 | JP38 |
| speed | speed | | | | | | |
|-------+-------+----------+-----+------+------+------+------|
| 75MHz | 50MHz | 1.5x |1 & 2| Open | Open | Open | Open |
|-------+-------+----------+-----+------+------+------+------|
| 90MHz | 60MHz | 1.5x |2 & 3|Closed| Open | Open | Open |
|-------+-------+----------+-----+------+------+------+------|
|100MHz | 66MHz | 1.5x |2 & 3|Closed|Closed| Open | Open |
|-------+-------+----------+-----+------+------+------+------|
|120MHz | 60MHz | 2x |2 & 3|Closed| Open |Closed| Open |
|-------+-------+----------+-----+------+------+------+------|
|133MHz | 66MHz | 2x |2 & 3|Closed|Closed|Closed| Open |
|-------+-------+----------+-----+------+------+------+------|
|150MHz | 60MHz | 2.5x |2 & 3|Closed| Open |Closed|Closed|
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION |
|------------------------------------------------------------|
| Type | J23 | J24 | J25 |
|----------------+-------------+--------------+--------------|
| » | STD | Open | Open | Closed |
|---+------------+-------------+--------------+--------------|
| | VRE | Open | Closed | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DMA/PIO CHANNEL SELECTION |
|------------------------------------------------------------|
| Setting | JP10 | JP11 |
|------------------+--------------------+--------------------|
| » | PIO mode | Pins 2 & 3 closed | Pins 2 & 3 closed |
|---+--------------+--------------------+--------------------|
| | DMA mode | Pins 1 & 2 closed | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PCI IRQ10 SELECTION |
|------------------------------------------------------------|
| Setting | JP6 | JP7 | JP8 | JP9 |
|---------+------------------+------+------+-----------------|
| INT A | Open | Open | Open | Pins 1 & 2 |
| | | | | closed |
|---------+------------------+------+------+-----------------|
| INT B | Open | Open | Open | Pins 2 & 3 |
| | | | | closed |
|---------+------------------+------+------+-----------------|
| INT C | Pins 1 & 2 | Open | Open | Open |
| | closed | | | |
|---------+------------------+------+------+-----------------|
| INT D | Pins 2 & 3 | Open | Open | Open |
| | closed | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PCI IRQ11 SELECTION |
|------------------------------------------------------------|
| Setting | JP6 | JP7 | JP8 | JP9 |
|---------+------+------------------+-----------------+------|
| INT A | Open | Open | Pins 1 & 2 | Open |
| | | | closed | |
|---------+------+------------------+-----------------+------|
| INT B | Open | Open | Pins 2 & 3 | Open |
| | | | closed | |
|---------+------+------------------+-----------------+------|
| INT C | Open | Pins 1 & 2 | Open | Open |
| | | closed | | |
|---------+------+------------------+-----------------+------|
| INT D | Open | Pins 2 & 3 | Open | Open |
| | | closed | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLASH BIOS SELECTION |
|------------------------------------------------------------|
| Setting | JP33 | JP34 |
|------------------+--------------------+--------------------|
| » | EPROM | Pins 1 & 2 closed | Pins 2 & 3 closed |
|---+--------------+--------------------+--------------------|
| | Flash | Pins 2 & 3 closed | Pins 1 & 2 closed |
+------------------------------------------------------------+