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# SOLTEK COMPUTER, INC.
SL-53A2, SL-53A5
Device Type Mainboard
Processor CX 6X86/CX 6X86L/CX 6X86MX/AM K5/AM
K6/Pentium/ Pentium MMX
Processor Speed 75/90/100/120/133/150/166/180/200/233MHz
Chip Set Intel 430VX
Maximum Onboard 128MB DRAM (EDO supported)
Memory
Cache 256/512KB
BIOS Award
I/O Options 32-bit PCI slots (4), floppy drive interface,
IDE interfaces (2), parallel port, PS/2 mouse
port, serial ports (2), USB connectors (2),
green PC connector
Dimensions 250mm x 220mm
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| PS/2 mouse port | CN1 | IR connector | J1B |
|-------------------+----------+------------------+----------|
| Parallel port | CN2 | Green PC | J1C |
| | | connector | |
|-------------------+----------+------------------+----------|
| Floppy drive | CN3 | Speaker | J2A |
| interface | | | |
|-------------------+----------+------------------+----------|
| Serial port 1 | CN4 | Reset switch | J2B |
|-------------------+----------+------------------+----------|
| Serial port 2 | CN5 | Power LED & | J2C |
| | | keylock | |
|-------------------+----------+------------------+----------|
| IDE interface 1 | CN6 | Turbo LED | J2D |
|-------------------+----------+------------------+----------|
| IDE interface 2 | CN7 | 32-bit PCI slots | PC1 - |
| | | | PC4 |
|-------------------+----------+------------------+----------|
| IDE interface LED | J1A | USB connector | USB |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|---------------------------------------+-------+------------|
| » | CMOS normal operation | JP6 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | CMOS clear | JP6 | Pins 2 & 3 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| » | Factory configured - do not alter | JP14 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| » | Factory configured - do not alter | JP19 | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 8MB | (2) 1MB x 36 | None |
|------------------+--------------------+--------------------|
| 16MB | (2) 1MB x 36 | (2) 1MB x 36 |
|------------------+--------------------+--------------------|
| 16MB | (2) 2MB x 36 | None |
|------------------+--------------------+--------------------|
| 24MB | (2) 2MB x 36 | (2) 1MB x 36 |
|------------------+--------------------+--------------------|
| 32MB | (2) 2MB x 36 | (2) 2MB x 36 |
|------------------+--------------------+--------------------|
| 32MB | (2) 4MB x 36 | None |
|------------------+--------------------+--------------------|
| 40MB | (2) 4MB x 36 | (2) 1MB x 36 |
|------------------+--------------------+--------------------|
| 48MB | (2) 4MB x 36 | (2) 2MB x 36 |
|------------------+--------------------+--------------------|
| 64MB | (2) 4MB x 36 | (2) 4MB x 36 |
|------------------+--------------------+--------------------|
| 64MB | (2) 8MB x 36 | None |
|------------------+--------------------+--------------------|
| 72MB | (2) 8MB x 36 | (2) 1MB x 36 |
|------------------+--------------------+--------------------|
| 80MB | (2) 8MB x 36 | (2) 2MB x 36 |
|------------------+--------------------+--------------------|
| 96MB | (2) 8MB x 36 | (2) 4MB x 36 |
|------------------+--------------------+--------------------|
| 128MB | (2) 8MB x 36 | (2) 8MB x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86) |
|------------------------------------------------------------|
|Speed | Clock |Multiplier|JP2 | JP3 |JP11 |JP12 |JP21 |JP22 |
| | speed | | | | | | | |
|------+-------+----------+----+-----+-----+-----+-----+-----|
|120MHz| 50MHz | 2x |1 & |1 & 2|2 & 3|1 & 2|1&2, |1&2, |
| | | | 2 | | | | 4&5 | 4&5 |
|------+-------+----------+----+-----+-----+-----+-----+-----|
|133MHz| 55MHz | 2x |2 & |2 & 3|2 & 3|1 & 2|1&2, |1&2, |
| | | | 3 | | | | 4&5 | 4&5 |
|------+-------+----------+----+-----+-----+-----+-----+-----|
|150MHz| 60MHz | 2x |1 & |2 & 3|2 & 3|1 & 2|1&2, |1&2, |
| | | | 2 | | | | 4&5 | 4&5 |
|------+-------+----------+----+-----+-----+-----+-----+-----|
|166MHz| 66MHz | 2x |2 & |1 & 2|2 & 3|1 & 2|1&2, |1&2, |
| | | | 3 | | | | 4&5 | 4&5 |
|------------------------------------------------------------|
|Note: Numbers designate pins that should be in the closed |
|position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86L) |
|------------------------------------------------------------|
|Speed | Clock |Multiplier|JP2 |JP3 |JP11|JP12 |JP21 |JP22 |
| | speed | | | | | | | |
|------+---------+----------+----+----+----+-----+-----+-----|
|120MHz| 50MHz | 2x |1 & |1 & |2 & |1 & 2|2&3, |2&3, |
| | | | 2 | 2 | 3 | | 5&6 | 5&6 |
|------+---------+----------+----+----+----+-----+-----+-----|
|133MHz| 55MHz | 2x |2 & |2 & |2 & |1 & 2|2&3, |2&3, |
| | | | 3 | 3 | 3 | | 5&6 | 5&6 |
|------+---------+----------+----+----+----+-----+-----+-----|
|150MHz| 60MHz | 2x |1 & |2 & |2 & |1 & 2|2&3, |2&3, |
| | | | 2 | 3 | 3 | | 5&6 | 5&6 |
|------+---------+----------+----+----+----+-----+-----+-----|
|166MHz| 66MHz | 2x |2 & |1 & |2 & |1 & 2|2&3, |2&3, |
| | | | 3 | 2 | 3 | | 5&6 | 5&6 |
|------------------------------------------------------------|
|Note: Numbers designate pins that should be in the closed |
|position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86MX) |
|------------------------------------------------------------|
|Speed | Clock |Multiplier|JP2 |JP3 |JP11|JP12 |JP21 |JP22 |
| | speed | | | | | | | |
|------+---------+----------+----+----+----+-----+-----+-----|
|166MHz| 60MHz | 2.5x |2 & |1 & |2 & |2 & 3|2&3, |2&3, |
| | | | 3 | 2 | 3 | | 5&6 | 5&6 |
|------+---------+----------+----+----+----+-----+-----+-----|
|200MHz| 66MHz | 2.5x |2 & |1 & |1 & |2 & 3|2&3, |2&3, |
| | | | 3 | 2 | 2 | | 5&6 | 5&6 |
|------+---------+----------+----+----+----+-----+-----+-----|
|233MHz| 66MHz | 3x |2 & |1 & |2 & |1 & 2|2&3, |2&3, |
| | | | 3 | 2 | 3 | | 5&6 | 5&6 |
|------------------------------------------------------------|
|Note: Numbers designate pins that should be in the closed |
|position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AM K5) |
|------------------------------------------------------------|
|Speed | Clock |Multiplier|JP2 |JP3 |JP11|JP12 |JP21 |JP22 |
| | speed | | | | | | | |
|------+---------+----------+----+----+----+-----+-----+-----|
|75MHz | 50MHz | 1.5x |1 & |1 & |1 & |1 & 2|1&2, |1&2, |
| | | | 2 | 2 | 2 | | 4&5 | 4&5 |
|------+---------+----------+----+----+----+-----+-----+-----|
|90MHz | 60MHz | 1.5x |1 & |2 & |1 & |1 & 2|1&2, |1&2, |
| | | | 2 | 3 | 2 | | 4&5 | 4&5 |
|------+---------+----------+----+----+----+-----+-----+-----|
|100MHz| 66MHz | 1.5x |2 & |1 & |1 & |1 & 2|1&2, |1&2, |
| | | | 3 | 2 | 2 | | 4&5 | 4&5 |
|------+---------+----------+----+----+----+-----+-----+-----|
|120MHz| 60MHz | 1.5x |1 & |2 & |1 & |1 & 2|1&2, |1&2, |
| | | | 2 | 3 | 2 | | 4&5 | 4&5 |
|------+---------+----------+----+----+----+-----+-----+-----|
|133MHz| 66MHz | 1.5x |2 & |1 & |1 & |1 & 2|1&2, |1&2, |
| | | | 3 | 2 | 2 | | 4&5 | 4&5 |
|------+---------+----------+----+----+----+-----+-----+-----|
|150MHz| 60MHz | 2x |2 & |1 & |2 & |2 & 3|1&2, |1&2, |
| | | | 3 | 2 | 3 | | 4&5 | 4&5 |
|------+---------+----------+----+----+----+-----+-----+-----|
|166MHz| 66MHz | 2.5x |1 & |2 & |2 & |2 & 3|1&2, |1&2, |
| | | | 2 | 3 | 3 | | 4&5 | 4&5 |
|------------------------------------------------------------|
|Note: Numbers designate pins that should be in the closed |
|position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AM K6) |
|------------------------------------------------------------|
|Speed | Clock |Multiplier|JP2 |JP3 |JP11|JP12 |JP21 |JP22 |
| | speed | | | | | | | |
|------+---------+----------+----+----+----+-----+-----+-----|
|166MHz| 66MHz | 2.5x |2 & |1 & |2 & |2 & 3|2&3, |2&3, |
| | | | 3 | 2 | 3 | | 5&6 | 5&6 |
|------+---------+----------+----+----+----+-----+-----+-----|
|200MHz| 66MHz | 3x |2 & |1 & |1 & |2 & 3|2&3, |2&3, |
| | | | 3 | 2 | 2 | | 5&6 | 5&6 |
|------+---------+----------+----+----+----+-----+-----+-----|
|233MHz| 66MHz | 3.5x |2 & |1 & |1 & |1 & 2|2&3, |2&3, |
| | | | 3 | 2 | 2 | | 5&6 | 5&6 |
|------------------------------------------------------------|
|Note: Numbers designate pins that should be in the closed |
|position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (PENTIUM) |
|------------------------------------------------------------|
|Speed | Clock |Multiplier|JP2 |JP3 |JP11|JP12 |JP21 |JP22 |
| | speed | | | | | | | |
|------+---------+----------+----+----+----+-----+-----+-----|
|75MHz | 50MHz | 1.5x |1 & |1 & |1 & |1 & 2|1&2, |1&2, |
| | | | 2 | 2 | 2 | | 4&5 | 4&5 |
|------+---------+----------+----+----+----+-----+-----+-----|
|90MHz | 60MHz | 1.5x |1 & |2 & |1 & |1 & 2|1&2, |1&2, |
| | | | 2 | 3 | 2 | | 4&5 | 4&5 |
|------+---------+----------+----+----+----+-----+-----+-----|
|100MHz| 66MHz | 1.5x |2 & |1 & |1 & |1 & 2|1&2, |1&2, |
| | | | 3 | 2 | 2 | | 4&5 | 4&5 |
|------+---------+----------+----+----+----+-----+-----+-----|
|120MHz| 60MHz | 2x |1 & |2 & |2 & |1 & 2|1&2, |1&2, |
| | | | 2 | 3 | 3 | | 4&5 | 4&5 |
|------+---------+----------+----+----+----+-----+-----+-----|
|133MHz| 66MHz | 2x |2 & |1 & |2 & |1 & 2|1&2, |1&2, |
| | | | 3 | 2 | 3 | | 4&5 | 4&5 |
|------+---------+----------+----+----+----+-----+-----+-----|
|150MHz| 60MHz | 2.5x |1 & |2 & |2 & |2 & 3|1&2, |1&2, |
| | | | 2 | 3 | 3 | | 4&5 | 4&5 |
|------+---------+----------+----+----+----+-----+-----+-----|
|166MHz| 66MHz | 2.5x |2 & |1 & |2 & |2 & 3|1&2, |1&2, |
| | | | 3 | 2 | 3 | | 4&5 | 4&5 |
|------+---------+----------+----+----+----+-----+-----+-----|
|180MHz| 60MHz | 3x |1 & |2 & |1 & |2 & 3|1&2, |1&2, |
| | | | 2 | 3 | 2 | | 4&5 | 4&5 |
|------+---------+----------+----+----+----+-----+-----+-----|
|200MHz| 66MHz | 3x |2 & |1 & |1 & |2 & 3|1&2, |1&2, |
| | | | 3 | 2 | 2 | | 4&5 | 4&5 |
|------------------------------------------------------------|
|Note: Numbers designate pins that should be in the closed |
|position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (PENTIUM MMX) |
|------------------------------------------------------------|
|Speed | Clock |Multiplier|JP2 |JP3 |JP11|JP12 |JP21 |JP22 |
| | speed | | | | | | | |
|------+---------+----------+----+----+----+-----+-----+-----|
|166MHz| 66MHz | 2.5x |2 & |1 & |2 & |2 & 3|2&3, |2&3, |
| | | | 3 | 2 | 3 | | 5&6 | 5&6 |
|------+---------+----------+----+----+----+-----+-----+-----|
|200MHz| 60MHz | 3x |2 & |1 & |1 & |2 & 3|2&3, |2&3, |
| | | | 3 | 2 | 2 | | 5&6 | 5&6 |
|------+---------+----------+----+----+----+-----+-----+-----|
|233MHz| 66MHz | 3.5x |2 & |1 & |1 & |1 & 2|2&3, |2&3, |
| | | | 3 | 2 | 2 | | 5&6 | 5&6 |
|------------------------------------------------------------|
|Note: Numbers designate pins that should be in the closed |
|position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION (SINGLE) |
|------------------------------------------------------------|
| Voltage | JP14 | JP23 |
|----------------+---------------------+---------------------|
| | 3.38v | Pins 2 & 3 closed | Pins 1 & 2 closed |
|---+------------+---------------------+---------------------|
| » | 3.52v | Pins 1 & 2 closed | Pins 4 & 5 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION (DUAL) |
|------------------------------------------------------------|
| Voltage | V core | JP14 | JP23 |
|----------+---------+-------------------+-------------------|
| 3.52v | 2.8v | Pins 1 & 2 closed | Pins 5 & 6 closed |
|----------+---------+-------------------+-------------------|
| 3.52v | 2.9v | Pins 1 & 2 closed | Pins 2 & 3 closed |
+------------------------------------------------------------+