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P55-VX

EPOX COMPUTER CO., LTD.

P55-VX

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

225mm x 220mm

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), IR connector, USB connector

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Serial port 2

CN1

Chassis fan power

J3

Serial port 1

CN2

Power LED & keylock

J4 pins 1 - 5

Parallel port

CN3

Speaker

J4 pins 7 - 10

Floppy drive interface

CN4

Reset switch

J4 pins 12 & 13

IDE interface 2

CN5

Turbo LED

J4 pins 15 & 16

IDE interface 1

CN6

Green PC connector

J4 pins 18 & 19

USB connector

CN8

Green PC LED

J4 pins 21 & 22

PS/2 mouse interface

J1

IDE interface LED

J4 pins 24 & 25

IR connector

J2

32-bit PCI slots

PC1 - PC4

USER CONFIGURABLE SETTINGS

Function

Label

Position

 

Flash BIOS voltage select 12v

JP2

Pins 2 & 3 closed

 

Flash BIOS voltage select 5v

JP2

Pins 1 & 2 closed

DRAM 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) 1M x 36

(2) 2M x 36

32MB

(2) 4M x 36

None

32MB

(2) 2M x 36

(2) 2M x 36

40MB

(2) 1M x 36

(2) 4M 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) 2M x 36

(2) 8M 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. Banks are interchangeable.

CACHE CONFIGURATION

Size

Bank 0

TAG

256KB

(2) 32K x 32

(1) 8K/16K/32K x 8

512KB

(2) 64K x 32

(1) 16K/32K x 8

CPU SPEED SELECTION (CYRIX)

CPU speed

Clock speed

Multiplier

JP7

JP8

JP9

JP10

120MHz

50MHz

2x

Closed

Closed

1 & 2

2 & 3

133MHz

55MHz

2x

Open

Open

1 & 2

2 & 3

150MHz

60MHz

2x

Open

Closed

1 & 2

2 & 3

166MHz

66MHz

2x

Closed

Open

1 & 2

2 & 3

Note: Pins designated should be in the closed position.

CPU SPEED SELECTION (INTEL)

CPU speed

Clock speed

Multiplier

JP7

JP8

JP9

JP10

75MHz

50MHz

1.5x

Closed

Closed

1 & 2

1 & 2

90MHz

60MHz

1.5x

Open

Closed

1 & 2

1 & 2

100MHz

66MHz

1.5x

Closed

Open

1 & 2

1 & 2

120MHz

60MHz

2x

Open

Closed

1 & 2

2 & 3

133MHz

66MHz

2x

Closed

Open

1 & 2

2 & 3

150MHz

60MHz

2.5x

Open

Closed

2 & 3

2 & 3

166MHz

66MHz

2.5x

Closed

Open

2 & 3

2 & 3

180MHz

60MHz

3x

Open

Closed

2 & 3

1 & 2

200MHz

66MHz

3x

Closed

Open

2 & 3

1 & 2

Note: Pins designated should be in the closed position.

CPU TYPE SELECTION

Type

JP5A

JP5B

JP5C

CX M1

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

AM K5

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

P54C/CTB

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

CPU VOLTAGE SELECTION

Voltage

JP4

2.5v

Pins 1 & 2 closed

2.8v

Pins 2 & 3 closed