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P55-TF
EPOX COMPUTER CO., LTD.
P55-TF
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Processor
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CX M1/AM K5/Pentium
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Processor Speed
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75/90/100/120/133/150/166/180/200MHz
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Chip Set
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Intel
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Video Chip Set
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None
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Maximum Onboard Memory
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128MB (EDO supported)
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Maximum Video Memory
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None
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Cache
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256/512KB
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BIOS
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Award
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Dimensions
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254mm x 218mm
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I/O Options
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32-bit PCI slots (4), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse interface, serial ports (2), cache slot, IR connector
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NPU Options
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None
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CONNECTIONS
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Purpose
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Location
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Purpose
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Location
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Serial port 1
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CN1
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IDE interface LED
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J13
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Serial port 2
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CN2
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Green PC LED
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J14
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Floppy drive interface
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CN3
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Turbo LED
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J15
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Parallel port
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CN4
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Reset switch
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J16
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IDE interface 2
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CN5
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Speaker
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J17
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IDE interface 1
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CN6
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Power LED & keylock
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J18
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PS/2 mouse interface
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J3
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IR connector
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JP2
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Chassis fan power
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J9
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32-bit PCI slots
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PC1 – PC4
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Green PC connector
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J12
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Cache slot
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SL1
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USER CONFIGURABLE SETTINGS
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Function
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Label
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Position
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Keyboard clock select depends on ISA clock
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JP4
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Pins 1 & 2 closed
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Keyboard clock select 12MHz
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JP4
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Pins 2 & 3 closed
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Flash BIOS normal operation
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JP6
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Pins 1 & 2 closed
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Flash BIOS programming mode
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JP6
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Pins 2 & 3 closed
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Flash BIOS voltage select 12v
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JP7
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Pins 2 & 3 closed
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Flash BIOS voltage select 5v
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JP7
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Pins 1 & 2 closed
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SIMM CONFIGURATION
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Size
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Bank 0
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Bank 1
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8MB
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(2) 1M x 36
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None
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16MB
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(2) 2M x 36
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None
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16MB
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(2) 1M x 36
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(2) 1M x 36
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24MB
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(2) 2M x 36
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(2) 1M x 36
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32MB
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(2) 4M x 36
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None
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32MB
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(2) 2M x 36
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(2) 2M x 36
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40MB
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(2) 4M x 36
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(2) 1M x 36
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48MB
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(2) 4M x 36
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(2) 2M x 36
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64MB
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(2) 8M x 36
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None
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64MB
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(2) 4M x 36
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(2) 4M x 36
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72MB
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(2) 8M x 36
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(2) 1M x 36
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80MB
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(2) 8M x 36
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(2) 2M x 36
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96MB
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(2) 8M x 36
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(2) 4M x 36
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128MB
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(2) 8M x 36
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(2) 8M x 36
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Note: Board accepts EDO memory. Board also accepts x 32 SIMMs.
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CACHE CONFIGURATION
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Size
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Bank 0
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SL1
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TAG
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256KB (A)
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(2) 32K x 32
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Not installed
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Unidentified
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256KB (A)
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None
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256KB module installed
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Unidentified
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512KB (A)
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(2) 32K x 32
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256KB module installed
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Unidentified
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512KB (B)
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(2) 64K x 32
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Not installed
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Unidentified
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512KB (C)
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None
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512KB module installed
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Unidentified
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CACHE JUMPER CONFIGURATION
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Size
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JP10
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JP11
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256KB (A)
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Pins 1 & 2 closed
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Pins 1 & 2 closed
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256KB (A)
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Pins 1 & 2 closed
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Pins 2 & 3 closed
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512KB (A)
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Pins 1 & 2 closed
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Pins 1 & 2 closed
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512KB (B)
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Pins 2 & 3 closed
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Pins 1 & 2 closed
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512KB (C)
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Pins 1 & 2 closed
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Pins 2 & 3 closed
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CPU SPEED SELECTION (CYRIX)
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CPU speed
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Clock speed
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Multiplier
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JP3
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JP12
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JP13
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JPS1
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JPS2
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120MHz
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50MHz
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2x
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1 & 2
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2 & 3
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1 & 2
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Closed
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Closed
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133MHz
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55MHz
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2x
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1 & 2
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2 & 3
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1 & 2
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Open
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Open
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150MHz
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60MHz
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2x
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2 & 3
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2 & 3
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1 & 2
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Closed
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Open
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166MHz
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66MHz
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2x
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2 & 3
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2 & 3
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1 & 2
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Open
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Closed
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Note: Pins designated should be in the closed position. J8 must be set for correct CPU type.
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CPU SPEED SELECTION (AMD)
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Note: The jumper settings for the AMD processor is unidentified.
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CPU SPEED SELECTION (INTEL)
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CPU speed
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Clock speed
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Multiplier
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JP3
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JP12
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JP13
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JPS1
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JPS2
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75MHz
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50MHz
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1.5x
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1 & 2
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2 & 3
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2 & 3
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Closed
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Closed
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90MHz
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60MHz
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1.5x
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2 & 3
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2 & 3
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2 & 3
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Closed
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Open
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100MHz
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66MHz
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1.5x
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2 & 3
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2 & 3
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2 & 3
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Open
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Closed
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120MHz
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60MHz
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2x
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2 & 3
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2 & 3
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1 & 2
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Closed
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Open
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133MHz
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66MHz
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2x
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2 & 3
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2 & 3
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1 & 2
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Open
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Closed
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150MHz
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60MHz
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2.5x
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2 & 3
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1 & 2
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1 & 2
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Closed
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Open
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166MHz
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66MHz
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2.5x
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2 & 3
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1 & 2
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1 & 2
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Open
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Closed
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180MHz
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60MHz
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3x
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2 & 3
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1 & 2
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2 & 3
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Closed
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Open
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200MHz
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66MHz
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3x
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2 & 3
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1 & 2
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2 & 3
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Open
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Closed
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Note: Pins designated should be in the closed position. J8 must be set for correct CPU type.
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CPU TYPE SELECTION
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Type
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JP8A
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JP8B
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JP8C
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JP8D
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Cyrix
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Pins 1 & 2 closed
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Pins 1 & 2 closed
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Pins 1 & 2 closed
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Pins 1 & 2 closed
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AMD
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Pins 1 & 2 closed
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Pins 1 & 2 closed
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Pins 1 & 2 closed
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Pins 1 & 2 closed
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P54C
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Pins 1 & 2 closed
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Pins 1 & 2 closed
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Pins 1 & 2 closed
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Pins 1 & 2 closed
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P55C
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Pins 2 & 3 closed
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Pins 2 & 3 closed
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Pins 2 & 3 closed
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Pins 2 & 3 closed
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