EPOX COMPUTER CO., LTD. ======================= P55-TX Processor CX 6X86/AM K5/AM K6/Pentium Processor Speed 90/100/120/133/150/166/180/200/225/233MHz Chip Set Intel Video Chip Set None Maximum Onboard 256MB (EDO supported) Memory Maximum Video None Memory Cache 512KB BIOS Award Dimensions 305mm x 244mm 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), IR connector, USB connector, ATX power connector NPU Options None +------------------------------------------------------------+ | CONNECTIONS | |------------------------------------------------------------| | Purpose | Location | Purpose | Location | |------------------+----------+----------------+-------------| | ATX power | ATX | Chassis fan | JP1 | | connector | | power | | |------------------+----------+----------------+-------------| | USB connector | CN1 | Soft off power | JP9 | | | | supply | | |------------------+----------+----------------+-------------| | Serial port 2 | CN2 | Power LED & | JP14/pins 1 | | | | keylock | - 5 | |------------------+----------+----------------+-------------| | Parallel port | CN3 | Speaker | JP14/pins 7 | | | | | - 10 | |------------------+----------+----------------+-------------| | PS/2 mouse port | CN4 | Reset switch | JP14/pins | | | | | 12 & 13 | |------------------+----------+----------------+-------------| | Serial port 1 | CN5 | Green PC | JP14/pins | | | | connector | 15 & 16 | |------------------+----------+----------------+-------------| | IR connector | J4 | Green PC LED | JP14/pins | | | | | 18 & 19 | |------------------+----------+----------------+-------------| | IDE interface 1 | J5 | Turbo LED | JP14/pins | | | | | 20 & 21 | |------------------+----------+----------------+-------------| | IDE interface 2 | J6 | IDE interface | JP14/pins | | | | LED | 23 & 24 | |------------------+----------+----------------+-------------| | Floppy drive | J7 | 32-bit PCI bus | PC1 - PC4 | | interface | | slots | | +------------------------------------------------------------+ +------------------------------------------------------------+ | USER CONFIGURABLE SETTINGS | |------------------------------------------------------------| | Function | Label | Position | |-------------------------------------+-------+--------------| |>> | Keyboard power on enabled | JP2 | Pins 1 & 2 | | | | | closed | |---+---------------------------------+-------+--------------| | | Keyboard power on disabled | JP2 | Pins 2 & 3 | | | | | closed | |---+---------------------------------+-------+--------------| |>> | Factory configured - do not | JP6 | Unidentified | | | alter | | | |---+---------------------------------+-------+--------------| |>> | CMOS memory normal operation | JP8 | Pins 1 & 2 | | | | | closed | |---+---------------------------------+-------+--------------| | | CMOS memory clear | JP8 | Pins 2 & 3 | | | | | 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 0 | Bank 1 | |------------------+--------------------+--------------------| | 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) 8M x 64 | (1) 8M x 64 | +------------------------------------------------------------+ +------------------------------------------------------------+ | DIMM/SIMM VOLTAGE CONFIGURATION | |------------------------------------------------------------| | Voltage | JP7A | JP7B | |------------------+--------------------+--------------------| |>> | 3.3v | Pins 2 & 3 closed | Pins 2 & 3 closed | |---+--------------+--------------------+--------------------| | | 5v | Pins 1 & 2 closed | Pins 1 & 2 closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | CACHE CONFIGURATION | |------------------------------------------------------------| | Size | Bank 0 | TAG | |------------------+--------------------+--------------------| | 512KB | (2) 64K x 32 | Unidentified | |------------------------------------------------------------| | Note: The location of the TAG is unidentified. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU SPEED SELECTION (CX 6X86) | |------------------------------------------------------------| | CPU speed | Clock speed | Multiplier | JP4 | |-----------+-------------+------------+---------------------| | 133MHz | 66MHz | 2x | Pins 23 & 24 closed | |-----------+-------------+------------+---------------------| | 150MHz | 60MHz | 2x | Pins 5 & 6 closed | |-----------+-------------+------------+---------------------| | 166MHz | 66MHz | 2x | Pins 7 & 8 closed | |-----------+-------------+------------+---------------------| | 200MHz | 66MHz | 2x | Pins 25 & 26 closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU SPEED SELECTION (AM K5/K6) | |------------------------------------------------------------| | CPU speed | Clock speed | Multiplier | JP4 | |-----------+-------------+------------+---------------------| | 90MHz | 60MHz | 1.5x | Pins 1 & 2 closed | |-----------+-------------+------------+---------------------| | 100MHz | 66MHz | 1.5x | Pins 3 & 4 closed | |-----------+-------------+------------+---------------------| | 120MHz | 60MHz | 2x | Pins 5 & 6 closed | |-----------+-------------+------------+---------------------| | 133MHz | 66MHz | 2x | Pins 7 & 8 closed | |-----------+-------------+------------+---------------------| | 150MHz | 60MHz | 2.5x | Pins 9 & 10 closed | |-----------+-------------+------------+---------------------| | 166MHz | 66MHz | 2.5x | Pins 11 & 12 closed | |-----------+-------------+------------+---------------------| | 180MHz | 60MHz | 3x | Pins 13 & 14 closed | |-----------+-------------+------------+---------------------| | 200MHz | 66MHz | 3x | Pins 15 & 16 closed | |-----------+-------------+------------+---------------------| | 225MHz | 75MHz | 3.5x | Pins 17 & 18 closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU SPEED SELECTION (INTEL) | |------------------------------------------------------------| | CPU speed | Clock speed | Multiplier | JP4 | |-----------+-------------+------------+---------------------| | 90MHz | 60MHz | 1.5x | Pins 1 & 2 closed | |-----------+-------------+------------+---------------------| | 100MHz | 66MHz | 1.5x | Pins 3 & 4 closed | |-----------+-------------+------------+---------------------| | 120MHz | 60MHz | 2x | Pins 5 & 6 closed | |-----------+-------------+------------+---------------------| | 133MHz | 66MHz | 2x | Pins 7 & 8 closed | |-----------+-------------+------------+---------------------| | 150MHz | 60MHz | 2.5x | Pins 9 & 10 closed | |-----------+-------------+------------+---------------------| | 166MHz | 66MHz | 2.5x | Pins 11 & 12 closed | |-----------+-------------+------------+---------------------| | 180MHz | 60MHz | 3x | Pins 13 & 14 closed | |-----------+-------------+------------+---------------------| | 200MHz | 66MHz | 3x | Pins 15 & 16 closed | |-----------+-------------+------------+---------------------| | 225MHz | 75MHz | 3.5x | Pins 17 & 18 closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU VOLTAGE SELECTION (SINGLE) | |------------------------------------------------------------| | Voltage | J16 | |----------------------------+-------------------------------| | | 3.3v | Pins 1 & 2 closed | |----+-----------------------+-------------------------------| | | 3.45v | Pins 2 & 3 closed | |----+-----------------------+-------------------------------| |>> | 3.52v | Pins 3 & 4 closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU VOLTAGE SELECTION (DUAL) | |------------------------------------------------------------| | Voltage | V core | J16 | J18 | |-----------+--------+-------------------+-------------------| | | 3.3v | 2.5v | Pins 1 & 2 closed | Pins 1 & 2 closed | |---+-------+--------+-------------------+-------------------| | | 3.3v | 2.8v | Pins 1 & 2 closed | Pins 2 & 3 closed | |---+-------+--------+-------------------+-------------------| | | 3.3v | 2.9v | Pins 1 & 2 closed | Open | |---+-------+--------+-------------------+-------------------| | | 3.45v | 2.5v | Pins 2 & 3 closed | Pins 1 & 2 closed | |---+-------+--------+-------------------+-------------------| | | 3.45v | 2.8v | Pins 2 & 3 closed | Pins 2 & 3 closed | |---+-------+--------+-------------------+-------------------| | | 3.45v | 2.9v | Pins 2 & 3 closed | Open | |---+-------+--------+-------------------+-------------------| | | 3.52v | 2.5v | Pins 3 & 4 closed | Pins 1 & 2 closed | |---+-------+--------+-------------------+-------------------| |>> | 3.52v | 2.8v | Pins 3 & 4 closed | Pins 2 & 3 closed | |---+-------+--------+-------------------+-------------------| | | 3.52v | 2.9v | Pins 3 & 4 closed | Open | +------------------------------------------------------------+ +------------------------------------------------------------+ | FLASH BIOS SELECTION | |------------------------------------------------------------| | Setting | J9 | J10 | |------------------+--------------------+--------------------| |>> | 5v | Pins 2 & 3 closed | Pins 2 & 3 closed | |---+--------------+--------------------+--------------------| | | 12v | Pins 1 & 2 closed | Pins 1 & 2 closed | +------------------------------------------------------------+