EPOX COMPUTER CO., LTD.
P55-TXL
Processor | CX M1/AM K5/Pentium |
Processor Speed | 90/100/120/133/150/166/180/200/225MHz |
Chip Set | Intel |
Video Chip Set | None |
Maximum Onboard Memory | 256MB (EDO supported) |
Maximum Video Memory | None |
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 connector | ATX | Chassis fan power | JP1 |
USB connector | CN1 | Soft off power supply | JP9 |
Serial port 2 | CN2 | Power LED & keylock | JP14/pins 1 – 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 connector | JP14/pins 15 & 16 |
Floppy drive interface | CN6 | Green PC LED | JP14/pins 18 & 19 |
IDE interface 2 | CN7 | Turbo LED | JP14/pins 21 & 22 |
IDE interface 1 | CN8 | IDE interface LED | JP14/pins 24 & 25 |
IR connector | J4 | 32-bit PCI slots | PC1 – PC4 |
USER CONFIGURABLE SETTINGS | |||
Function | Label | Position | |
» | Keyboard power on function enabled | JP2 | Pins 1 & 2 closed |
Keyboard power on function disabled | JP2 | Pins 2 & 3 closed | |
» | Factory configured - do not alter | JP6 | Unidentified |
» | CMOS memory normal operation | JP8 | Pins 1 & 2 closed |
CMOS memory clear | JP8 | Pins 2 & 3 closed |
DIMM/DRAM CONFIGURATION | ||||
Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
8MB | (2) 1M x 36 | None | None | None |
8MB | None | (2) 1M x 36 | None | None |
8MB | None | None | (1) 1M x 64 | None |
16MB | (2) 2M x 36 | None | None | None |
16MB | None | None | (1) 2M x 64 | None |
16MB | (2) 1M x 36 | (2) 1M x 36 | None | None |
16MB | None | (2) 1M x 36 | None | (1) 1M x 64 |
16MB | None | None | (1) 1M x 64 | (1) 1M x 64 |
24MB | None | (2) 2M x 36 | None | (1) 1M x 64 |
32MB | (2) 4M x 36 | None | None | None |
32MB | None | None | (1) 4M x 64 | None |
32MB | None | (2) 2M x 36 | None | (1) 2M x 64 |
40MB | (2) 4M x 36 | (2) 1M x 36 | None | None |
48MB | (2) 4M x 36 | (2) 2M x 36 | None | None |
48MB | None | (2) 4M x 36 | None | (1) 2M x 64 |
64MB | (2) 8M x 36 | None | None | None |
64MB | None | None | None | (1) 8M x 64 |
64MB | (2) 4M x 36 | (2) 4M x 36 | None | None |
64MB | None | (2) 4M x 36 | None | (1) 4M x 64 |
64MB | None | None | (1) 4M x 64 | (1) 4M x 64 |
DIMM/DRAM CONFIGURATION (CON’T) | ||||
Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
72MB | (2) 8M x 36 | (2) 1M x 36 | None | None |
72MB | None | (2) 8M x 36 | None | (1) 1M x 64 |
80MB | None | (2) 2M x 36 | None | (1) 8M x 64 |
80MB | (2) 8M x 36 | (2) 2M x 36 | None | None |
96MB | None | (2) 4M x 36 | None | (1) 8M x 64 |
96MB | (2) 8M x 36 | (2) 4M x 36 | None | None |
128MB | None | (2) 8M x 36 | None | (1) 8M x 64 |
128MB | (2) 8M x 36 | (2) 8M x 36 | None | None |
128MB | (2) 16M x 36 | None | None | None |
256MB | (2) 16M x 36 | (2) 16M x 36 | None | None |
Note: Board accepts EDO memory. Banks 0 & 1 and 2 & 3 are interchangeable. |
DIMM 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 |
CPU SPEED SELECTION (CYRIX) | |||
CPU speed | Clock speed | Multiplier | JP4 |
133MHz | 55MHz | 2x | Pins 21 & 22 closed |
150MHz | 60MHz | 2x | Pins 5 & 6 closed |
166MHz | 66MHz | 2x | Pins 7 & 8 closed |
200MHz | 75MHz | 2x | Pins 19 & 20 closed |
CPU SPEED SELECTION (AMD) | |||
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 VOLTAGE SELECTION | |||
Voltage | J9 | J10 | |
» | 5v | Pins 2 & 3 closed | Pins 2 & 3 closed |
12v | Pins 1 & 2 closed | Pins 1 & 2 closed |