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P55-TF

EPOX COMPUTER CO., LTD.

P55-TF

Processor

CX M1/AM K5/Pentium

Processor Speed

75/90/100/120/133/150/166/180/200MHz

Chip Set

Intel

Video Chip Set

None

Maximum Onboard Memory

128MB (EDO supported)

Maximum Video Memory

None

Cache

256/512KB

BIOS

Award

Dimensions

254mm x 218mm

I/O Options

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

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Serial port 1

CN1

IDE interface LED

J13

Serial port 2

CN2

Green PC LED

J14

Floppy drive interface

CN3

Turbo LED

J15

Parallel port

CN4

Reset switch

J16

IDE interface 2

CN5

Speaker

J17

IDE interface 1

CN6

Power LED & keylock

J18

PS/2 mouse interface

J3

IR connector

JP2

Chassis fan power

J9

32-bit PCI slots

PC1 PC4

Green PC connector

J12

Cache slot

SL1

USER CONFIGURABLE SETTINGS

Function

Label

Position

 

Keyboard clock select depends on ISA clock

JP4

Pins 1 & 2 closed

 

Keyboard clock select 12MHz

JP4

Pins 2 & 3 closed

 

Flash BIOS normal operation

JP6

Pins 1 & 2 closed

 

Flash BIOS programming mode

JP6

Pins 2 & 3 closed

 

Flash BIOS voltage select 12v

JP7

Pins 2 & 3 closed

 

Flash BIOS voltage select 5v

JP7

Pins 1 & 2 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

Note: Board accepts EDO memory. Board also accepts x 32 SIMMs.

CACHE CONFIGURATION

Size

Bank 0

SL1

TAG

256KB (A)

(2) 32K x 32

Not installed

Unidentified

256KB (A)

None

256KB module installed

Unidentified

512KB (A)

(2) 32K x 32

256KB module installed

Unidentified

512KB (B)

(2) 64K x 32

Not installed

Unidentified

512KB (C)

None

512KB module installed

Unidentified

CACHE JUMPER CONFIGURATION

Size

JP10

JP11

256KB (A)

Pins 1 & 2 closed

Pins 1 & 2 closed

256KB (A)

Pins 1 & 2 closed

Pins 2 & 3 closed

512KB (A)

Pins 1 & 2 closed

Pins 1 & 2 closed

512KB (B)

Pins 2 & 3 closed

Pins 1 & 2 closed

512KB (C)

Pins 1 & 2 closed

Pins 2 & 3 closed

CPU SPEED SELECTION (CYRIX)

CPU speed

Clock speed

Multiplier

JP3

JP12

JP13

JPS1

JPS2

120MHz

50MHz

2x

1 & 2

2 & 3

1 & 2

Closed

Closed

133MHz

55MHz

2x

1 & 2

2 & 3

1 & 2

Open

Open

150MHz

60MHz

2x

2 & 3

2 & 3

1 & 2

Closed

Open

166MHz

66MHz

2x

2 & 3

2 & 3

1 & 2

Open

Closed

Note: Pins designated should be in the closed position. J8 must be set for correct CPU type.

CPU SPEED SELECTION (AMD)

Note: The jumper settings for the AMD processor is unidentified.

CPU SPEED SELECTION (INTEL)

CPU speed

Clock speed

Multiplier

JP3

JP12

JP13

JPS1

JPS2

75MHz

50MHz

1.5x

1 & 2

2 & 3

2 & 3

Closed

Closed

90MHz

60MHz

1.5x

2 & 3

2 & 3

2 & 3

Closed

Open

100MHz

66MHz

1.5x

2 & 3

2 & 3

2 & 3

Open

Closed

120MHz

60MHz

2x

2 & 3

2 & 3

1 & 2

Closed

Open

133MHz

66MHz

2x

2 & 3

2 & 3

1 & 2

Open

Closed

150MHz

60MHz

2.5x

2 & 3

1 & 2

1 & 2

Closed

Open

166MHz

66MHz

2.5x

2 & 3

1 & 2

1 & 2

Open

Closed

180MHz

60MHz

3x

2 & 3

1 & 2

2 & 3

Closed

Open

200MHz

66MHz

3x

2 & 3

1 & 2

2 & 3

Open

Closed

Note: Pins designated should be in the closed position. J8 must be set for correct CPU type.

CPU TYPE SELECTION

Type

JP8A

JP8B

JP8C

JP8D

Cyrix

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

AMD

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

P54C

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

P55C

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 2 & 3 closed