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# EPOX COMPUTER CO., LTD.
P55-KV
Processor CX 6X86/CX 6X86L/IBM 6X86/IBM 6X86L/AM K5/AM
K6/Pentium
Processor Speed 75/90/100/120/133/150/166/180/200MHz
Chip Set VIA
Video Chip Set None
Maximum Onboard 128MB (EDO supported)
Memory
Maximum Video None
Memory
Cache 256/512KB
BIOS Award
Dimensions 220mm x 220mm
I/O Options 32-bit PCI slots (2), floppy drive interface,
green PC connector, IDE interfaces (2),
parallel port, PS/2 mouse interface, serial
ports (2), IR connector
NPU Options None
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+---------------+-------------|
| Serial port 1 | CN1 | Power LED & | J11/pins 1 |
| | | keylock | – 5 |
|-------------------+----------+---------------+-------------|
| Serial port 2 | CN2 | Speaker | J11/pins 7 |
| | | | - 10 |
|-------------------+----------+---------------+-------------|
| Parallel port | CN3 | Reset switch | J11/pins 12 |
| | | | & 13 |
|-------------------+----------+---------------+-------------|
| Floppy drive | CN4 | Green PC | J11/pins 15 |
| interface | | connector | & 16 |
|-------------------+----------+---------------+-------------|
| IDE interface 2 | CN5 | Green PC LED | J11/pins 18 |
| | | | & 19 |
|-------------------+----------+---------------+-------------|
| IDE interface 1 | CN6 | Turbo LED | J11/pins 20 |
| | | | & 21 |
|-------------------+----------+---------------+-------------|
| PS/2 mouse | J1 | IDE interface | J11/pins 23 |
| interface | | LED | & 24 |
|-------------------+----------+---------------+-------------|
| IR connector | J10 | 32-bit PCI | PC1 – PC2 |
| | | slots | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-----------------------------------+-------+----------------|
| » | Flash BIOS voltage select 5v | J6 | Pins 1 & 2 |
| | | | closed |
|---+-------------------------------+-------+----------------|
| | Flash BIOS voltage select 12v | J6 | Pins 2 & 3 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SIMM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 4MB | (1) 1M x 36 | None |
|------------------+--------------------+--------------------|
| 8MB | (1) 1M x 36 | (1) 1M x 36 |
|------------------+--------------------+--------------------|
| 8MB | (1) 2M x 36 | None |
|------------------+--------------------+--------------------|
| 16MB | (1) 2M x 36 | (1) 2M x 36 |
|------------------+--------------------+--------------------|
| 16MB | (1) 4M x 36 | None |
|------------------+--------------------+--------------------|
| 32MB | (1) 4M x 36 | (1) 4M x 36 |
|------------------+--------------------+--------------------|
| 32MB | (1) 8M x 36 | None |
|------------------+--------------------+--------------------|
| 64MB | (1) 8M x 36 | (1) 8M x 36 |
|------------------+--------------------+--------------------|
| 64MB | (1) 16M x 36 | None |
|------------------+--------------------+--------------------|
| 128MB | (1) 16M x 36 | (1) 16M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | TAG |
|------------------+--------------------+--------------------|
| 256KB | (2) 32K x 32 | Unidentified |
|------------------+--------------------+--------------------|
| 512KB | (2) 64K x 32 | Unidentified |
|------------------------------------------------------------|
| Note: The location of the TAG is unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CYRIX) |
|------------------------------------------------------------|
|CPU speed| Clock |Multiplier|J4 |J5 | J7 | J8 | J9 |
| | speed | | | | | | |
|---------+----------+----------+---+---+------+------+------|
| 120MHz | 50MHz | 2x |2 &|1 &|Closed|Closed| Open |
| | | | 3 | 2 | | | |
|---------+----------+----------+---+---+------+------+------|
| 133MHz | 55MHz | 2x |2 &|1 &| Open | Open | Open |
| | | | 3 | 2 | | | |
|---------+----------+----------+---+---+------+------+------|
| 150MHz | 60MHz | 2x |2 &|1 &|Closed| Open | Open |
| | | | 3 | 2 | | | |
|---------+----------+----------+---+---+------+------+------|
| 166MHz | 66MHz | 2x |2 &|1 &| Open |Closed| Open |
| | | | 3 | 2 | | | |
|---------+----------+----------+---+---+------+------+------|
| 200MHz | 75MHz | 2x |2 &|1 &| Open | Open |Closed|
| | | | 3 | 2 | | | |
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (IBM) |
|------------------------------------------------------------|
|CPU speed| Clock |Multiplier|J4 |J5 | J7 | J8 | J9 |
| | speed | | | | | | |
|---------+----------+----------+---+---+------+------+------|
| 120MHz | 50MHz | 2x |2 &|1 &|Closed|Closed| Open |
| | | | 3 | 2 | | | |
|---------+----------+----------+---+---+------+------+------|
| 133MHz | 55MHz | 2x |2 &|1 &| Open | Open | Open |
| | | | 3 | 2 | | | |
|---------+----------+----------+---+---+------+------+------|
| 150MHz | 60MHz | 2x |2 &|1 &|Closed| Open | Open |
| | | | 3 | 2 | | | |
|---------+----------+----------+---+---+------+------+------|
| 166MHz | 66MHz | 2x |2 &|1 &| Open |Closed| Open |
| | | | 3 | 2 | | | |
|---------+----------+----------+---+---+------+------+------|
| 200MHz | 75MHz | 2x |2 &|1 &| Open | Open |Closed|
| | | | 3 | 2 | | | |
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AM K5/K6) |
|------------------------------------------------------------|
|CPU speed| Clock |Multiplier| J4 | J5 | J7 | J8 | J9 |
| | speed | | | | | | |
|---------+--------+----------+-----+-----+------+------+----|
| 75MHz | 50MHz | 1.5x |1 & 2|1 & 2|Closed|Closed|Open|
|---------+--------+----------+-----+-----+------+------+----|
| 90MHz | 60MHz | 1.5x |1 & 2|1 & 2|Closed| Open |Open|
|---------+--------+----------+-----+-----+------+------+----|
| 100MHz | 66MHz | 1.5x |1 & 2|1 & 2| Open |Closed|Open|
|---------+--------+----------+-----+-----+------+------+----|
| 120MHz | 60MHz | 2x |2 & 3|1 & 2|Closed| Open |Open|
|---------+--------+----------+-----+-----+------+------+----|
| 133MHz | 66MHz | 2x |2 & 3|1 & 2| Open |Closed|Open|
|---------+--------+----------+-----+-----+------+------+----|
| 150MHz | 60MHz | 2.5x |2 & 3|2 & 3|Closed| Open |Open|
|---------+--------+----------+-----+-----+------+------+----|
| 166MHz | 66MHz | 2.5x |2 & 3|2 & 3| Open |Closed|Open|
|---------+--------+----------+-----+-----+------+------+----|
| 180MHz | 60MHz | 3x |1 & 2|2 & 3|Closed| Open |Open|
|---------+--------+----------+-----+-----+------+------+----|
| 200MHz | 66MHz | 3x |1 & 2|2 & 3| Open |Closed|Open|
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL) |
|------------------------------------------------------------|
|CPU speed| Clock |Multiplier| J4 | J5 | J7 | J8 | J9 |
| | speed | | | | | | |
|---------+--------+----------+-----+-----+------+------+----|
| 75MHz | 50MHz | 1.5x |1 & 2|1 & 2|Closed|Closed|Open|
|---------+--------+----------+-----+-----+------+------+----|
| 90MHz | 60MHz | 1.5x |1 & 2|1 & 2|Closed| Open |Open|
|---------+--------+----------+-----+-----+------+------+----|
| 100MHz | 66MHz | 1.5x |1 & 2|1 & 2| Open |Closed|Open|
|---------+--------+----------+-----+-----+------+------+----|
| 120MHz | 60MHz | 2x |2 & 3|1 & 2|Closed| Open |Open|
|---------+--------+----------+-----+-----+------+------+----|
| 133MHz | 66MHz | 2x |2 & 3|1 & 2| Open |Closed|Open|
|---------+--------+----------+-----+-----+------+------+----|
| 150MHz | 60MHz | 2.5x |2 & 3|2 & 3|Closed| Open |Open|
|---------+--------+----------+-----+-----+------+------+----|
| 166MHz | 66MHz | 2.5x |2 & 3|2 & 3| Open |Closed|Open|
|---------+--------+----------+-----+-----+------+------+----|
| 180MHz | 60MHz | 3x |1 & 2|2 & 3|Closed| Open |Open|
|---------+--------+----------+-----+-----+------+------+----|
| 200MHz | 66MHz | 3x |1 & 2|2 & 3| Open |Closed|Open|
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION |
|------------------------------------------------------------|
| Type | J3A | J3B |
|------------------+--------------------+--------------------|
| AM K5 | Pins 1 & 2 closed | Pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| AM K6 | Pins 2 & 3 closed | Pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| CX 6X86 | Pins 1 & 2 closed | Pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| CX 6X86L | Pins 2 & 3 closed | Pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| CX M2 | Pins 2 & 3 closed | Pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| IBM 6X86 | Pins 1 & 2 closed | Pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| IBM 6X86L | Pins 2 & 3 closed | Pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| P54C | Pins 1 & 2 closed | Pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| P55C | Pins 2 & 3 closed | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION |
|------------------------------------------------------------|
| Voltage | J2 |
|----------------------------+-------------------------------|
| » | 2.8v | Pins 2 & 3 closed |
|---+------------------------+-------------------------------|
| | 2.9v | Pins 1 & 2 closed |
|---+------------------------+-------------------------------|
| | 3.2v | Open |
+------------------------------------------------------------+