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# SKYWELL TECHNOLOGY CORPORATION, LTD.
VT586TX
Device Type Mainboard
Processor CX 6X86/CX 6X86L/AM K5/AM K6/Pentium
Processor Speed 75/90/100/120/133/150/166/200/233MHz
Chip Set Intel
Video Chip Set None
Maximum Onboard 256MB (EDO supported)
Memory
Maximum Video None
Memory
Cache 256/512KB (located on Pentium II CPU)
BIOS Award
Dimensions 241mm x 221mm
I/O Options 32-bit PCI slots (4), floppy drive interface,
green PC connector, IDE interfaces (2),
parallel port, PS/2 mouse interface, serial
ports (2), IR connector, USB connectors (2),
ATX power connector
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| ATX power | ATX | Reset switch | J17 |
| connector | | | |
|-------------------+----------+------------------+----------|
| Floppy drive | J3 | IDE interface | J18 |
| interface | | LED | |
|-------------------+----------+------------------+----------|
| IDE interface 2 | J4 | IR connector | J19 |
|-------------------+----------+------------------+----------|
| PS/2 mouse | J5 | Chassis fan | J20 |
| interface | | power | |
|-------------------+----------+------------------+----------|
| Serial port 2 | J6 | Turbo LED | JP11 |
|-------------------+----------+------------------+----------|
| IDE interface 1 | J7 | Power LED & | JP12 |
| | | keylock | |
|-------------------+----------+------------------+----------|
| Serial port 1 | J8 | Green PC | JP13 |
| | | connector | |
|-------------------+----------+------------------+----------|
| Parallel port | J9 | Turbo switch | JP14 |
|-------------------+----------+------------------+----------|
| USB connector | J14 | Soft off power | JP15 |
| | | supply | |
|-------------------+----------+------------------+----------|
| USB connector | J15 | 32-bit PCI slots | PC1 - |
| | | | PC4 |
|-------------------+----------+------------------+----------|
| Speaker | J16 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-----------------------------------+-------+----------------|
| ยป | CMOS memory normal operation | JP1 | Pins 1 & 2 |
| | | | closed |
|---+-------------------------------+-------+----------------|
| | CMOS memory clear | JP1 | Pins 2 & 3 |
| | | | closed |
|---+-------------------------------+-------+----------------|
| | Flash BIOS voltage select 12v | JP2 | Pins 2 & 3 |
| | | | closed |
|---+-------------------------------+-------+----------------|
| | Flash BIOS voltage select 5v | JP2 | Pins 1 & 2 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SIMM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 8MB | (2) 1M x 36 | None |
|------------------+--------------------+--------------------|
| 16MB | (2) 2M x 36 | None |
|------------------+--------------------+--------------------|
| 16MB | (2) 1M x 36 | (2) 1M 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 |
|------------------+--------------------+--------------------|
| 40MB | (2) 4M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 48MB | (2) 4M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 64MB | (2) 8M x 36 | None |
|------------------+--------------------+--------------------|
| 64MB | (2) 4M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 72MB | (2) 8M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 80MB | (2) 8M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 96MB | (2) 8M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 128MB | (2) 8M x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 128MB | (2) 16M x 36 | None |
|------------------+--------------------+--------------------|
| 136MB | (2) 16M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 144MB | (2) 16M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 160MB | (2) 16M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 192MB | (2) 16M x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 256MB | (2) 16M x 36 | (2) 16M x 36 |
|------------------------------------------------------------|
| Note: Board accepts EDO memory. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 2 | Bank 3 |
|------------------+--------------------+--------------------|
| 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 |
|------------------+--------------------+--------------------|
| 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 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 |
|----------------------------+-------------------------------|
| 256KB | (2) 32K x 32 |
|----------------------------+-------------------------------|
| 512KB | (2) 64K x 32 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86) |
|------------------------------------------------------------|
|CPU speed| Clock |Multiplier| FS0 | FS1 | FS2 |JP3 | JP4 |
| | speed | | | | | | |
|---------+---------+----------+-----+-----+-----+----+------|
| 120MHz | 50MHz | 2x |1 & 2|1 & 2|1 & 2|Open|Closed|
|---------+---------+----------+-----+-----+-----+----+------|
| 133MHz | 55MHz | 2x |2 & 3|1 & 2|1 & 2|Open|Closed|
|---------+---------+----------+-----+-----+-----+----+------|
| 150MHz | 60MHz | 2x |1 & 2|1 & 2|2 & 3|Open|Closed|
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86L) |
|------------------------------------------------------------|
|CPU speed| Clock |Multiplier| FS0 | FS1 | FS2 |JP3 | JP4 |
| | speed | | | | | | |
|---------+---------+----------+-----+-----+-----+----+------|
| 166MHz | 66MHz | 2x |1 & 2|2 & 3|1 & 2|Open|Closed|
|---------+---------+----------+-----+-----+-----+----+------|
| 200MHz | 75MHz | 2x |2 & 3|1 & 2|2 & 3|Open|Closed|
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AM K5) |
|------------------------------------------------------------|
| CPU | Clock |Multiplier| FS0 | FS1 | FS2 | JP3 | JP4 |
| speed | speed | | | | | | |
|-------+---------+----------+-----+-----+-----+------+------|
| 75MHz | 50MHz | 1.5x |1 & 2|1 & 2|1 & 2| Open | Open |
|-------+---------+----------+-----+-----+-----+------+------|
| 90MHz | 60MHz | 1.5x |1 & 2|1 & 2|2 & 3| Open | Open |
|-------+---------+----------+-----+-----+-----+------+------|
|100MHz | 66MHz | 1.5x |1 & 2|2 & 3|1 & 2| Open | Open |
|-------+---------+----------+-----+-----+-----+------+------|
|133MHz | 66MHz | 2x |1 & 2|2 & 3|1 & 2| Open |Closed|
|-------+---------+----------+-----+-----+-----+------+------|
|166MHz | 66MHz | 2.5x |1 & 2|2 & 3|1 & 2|Closed|Closed|
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AM K6) |
|------------------------------------------------------------|
| CPU | Clock |Multiplier| FS0 | FS1 | FS2 | JP3 | JP4 |
| speed | speed | | | | | | |
|-------+---------+----------+-----+-----+-----+------+------|
|166MHz | 66MHz | 2.5x |1 & 2|2 & 3|1 & 2|Closed|Closed|
|-------+---------+----------+-----+-----+-----+------+------|
|200MHz | 66MHz | 3x |1 & 2|2 & 3|1 & 2|Closed| Open |
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL) |
|------------------------------------------------------------|
| CPU | Clock |Multiplier| FS0 | FS1 | FS2 | JP3 | JP4 |
| speed | speed | | | | | | |
|-------+---------+----------+-----+-----+-----+------+------|
| 75MHz | 50MHz | 1.5x |1 & 2|1 & 2|1 & 2| Open | Open |
|-------+---------+----------+-----+-----+-----+------+------|
| 90MHz | 60MHz | 1.5x |1 & 2|1 & 2|2 & 3| Open | Open |
|-------+---------+----------+-----+-----+-----+------+------|
|100MHz | 66MHz | 1.5x |1 & 2|2 & 3|1 & 2| Open | Open |
|-------+---------+----------+-----+-----+-----+------+------|
|120MHz | 60MHz | 2x |1 & 2|1 & 2|2 & 3| Open |Closed|
|-------+---------+----------+-----+-----+-----+------+------|
|133MHz | 66MHz | 2x |1 & 2|2 & 3|1 & 2| Open |Closed|
|-------+---------+----------+-----+-----+-----+------+------|
|150MHz | 60MHz | 2.5x |1 & 2|1 & 2|2 & 3|Closed|Closed|
|-------+---------+----------+-----+-----+-----+------+------|
|166MHz | 66MHz | 2.5x |1 & 2|2 & 3|1 & 2|Closed|Closed|
|-------+---------+----------+-----+-----+-----+------+------|
|200MHz | 66MHz | 3x |1 & 2|2 & 3|1 & 2|Closed| Open |
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL MMX) |
|------------------------------------------------------------|
| CPU | Clock |Multiplier| FS0 | FS1 | FS2 | JP3 | JP4 |
| speed | speed | | | | | | |
|-------+---------+----------+-----+-----+-----+------+------|
|166MHz | 66MHz | 2.5x |1 & 2|2 & 3|1 & 2|Closed|Closed|
|-------+---------+----------+-----+-----+-----+------+------|
|200MHz | 66MHz | 3x |1 & 2|2 & 3|1 & 2|Closed| Open |
|-------+---------+----------+-----+-----+-----+------+------|
|233MHz | 66MHz | 3.5x |1 & 2|2 & 3|1 & 2| Open | Open |
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION |
|------------------------------------------------------------|
|Voltage | JP5 | JP6 | JP7 | JP8 | JP9 | JP10 |
|--------+--------+--------+--------+--------+--------+------|
| 2.8v | Open | Open | Open | Open | Closed |3 & 4 |
|--------+--------+--------+--------+--------+--------+------|
| 2.9v | Open | Open | Open | Closed | Open |3 & 4 |
|--------+--------+--------+--------+--------+--------+------|
| 3.2v | Open | Open | Closed | Open | Open |3 & 4 |
|--------+--------+--------+--------+--------+--------+------|
| 3.4v | Open | Closed | Open | Open | Open |1 & 2 |
|--------+--------+--------+--------+--------+--------+------|
| 3.5v | Closed | Open | Open | Open | Open |1 & 2 |
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+