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P55TPIO

EFA CORPORATION

P55TPIO

Processor

Pentium

Processor Speed

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

Chip Set

Intel

Max. Onboard DRAM

128MB

Cache

256/512KB

BIOS

Award

Dimensions

290mm x 220mm

I/O Options

32-bit PCI slots (4), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, serial ports (2), VRM connector, cache slot

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Serial port 1

CN1

Power LED & keylock

J11

Serial port 2

CN2

IDE interface LED

J12

Parallel port

CN3

Green PC connector

J13

Floppy drive interface

CN4

Turbo LED

J14

IDE interface 1

CN5

Turbo switch

J15

IDE interface 2

CN6

Reset switch

J16

VRM connector

CN7

32-bit PCI slots

PC1 - PC4

Speaker

J10

Cache slot

SL1

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

Flash BIOS voltage select 5v

JP9

pins 1 & 2 closed

 

Flash BIOS voltage select 12v

JP9

pins 2 & 3 closed

»

CMOS memory normal operation

JP19

Open

 

CMOS memory clear

JP19

Closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

2MB

(2) 256K x 36

NONE

4MB

(2) 512K x 36

NONE

4MB

(2) 256K x 36

(2) 256K x 36

6MB

(2) 512K x 36

(2) 256K x 36

6MB

(2) 256K x 36

(2) 512K x 36

8MB

(2) 1M x 36

NONE

8MB

(2) 512K x 36

(2) 512K x 36

10MB

(2) 1M x 36

(2) 256K x 36

10MB

(2) 256K x 36

(2) 1M x 36

12MB

(2) 1M x 36

(2) 512K x 36

12MB

(2) 512K x 36

(2) 1M x 36

16MB

(2) 2M x 36

NONE

16MB

(2) 1M x 36

(2) 1M x 36

18MB

(2) 2M x 36

(2) 256K x 36

18MB

(2) 256K x 36

(2) 2M x 36

20MB

(2) 2M x 36

(2) 512K x 36

20MB

(2) 512K x 36

(2) 2M x 36

24MB

(2) 2M 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

34MB

(2) 4M x 36

(2) 256K x 36

34MB

(2) 256K x 36

(2) 4M x 36

36MB

(2) 4M x 36

(2) 512K x 36

36MB

(2) 512K x 36

(2) 4M x 36

40MB

(2) 4M x 36

(2) 1M x 36

40MB

(2) 1M x 36

(2) 4M x 36

48MB

(2) 4M x 36

(2) 2M x 36

48MB

(2) 2M x 36

(2) 4M x 36

64MB

(2) 8M x 36

NONE

64MB

(2) 4M x 36

(2) 4M x 36

66MB

(2) 8M x 36

(2) 256K x 36

66MB

(2) 256K x 36

(2) 8M x 36

68MB

(2) 8M x 36

(2) 512K x 36

68MB

(2) 512K x 36

(2) 8M x 36

72MB

(2) 8M x 36

(2) 1M x 36

72MB

(2) 1M x 36

(2) 8M x 36

DRAM CONFIGURATION (CON’T)

Size

Bank 0

Bank 1

80MB

(2) 8M x 36

(2) 2M x 36

80MB

(2) 2M x 36

(2) 8M x 36

96MB

(2) 8M x 36

(2) 4M x 36

96MB

(2) 4M x 36

(2) 8M x 36

128MB

(2) 8M x 36

(2) 8M x 36

Note: Board will also accept non-parity chips.

CACHE CONFIGURATION

Size

Bank 0

TAG

SL1

256KB (A)

(8) 32K x 8

(1) 32K x 8

Not installed

256KB (B)

NONE

NONE

Installed

512KB (A)

(8) 64K x 8

(1) 32K x 8

Not installed

512KB (B)

NONE

NONE

Installed

CACHE JUMPER CONFIGURATION

Size

JP10

JP11

JP12

JP20

None

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

Open

256KB (A)

pins 2 & 3 closed

pins 2 & 3 closed

pins 1 & 2 closed

pins 1 & 2, 3 & 4 closed

256KB (B)

Open

Open

Open

Open

512KB (A)

pins 1 & 2 closed

pins 1 & 2 closed

pins 2 & 3 closed

pins 1 & 2, 3 & 4 closed

512KB (B)

Open

Open

Open

Open

CACHE VOLTAGE CONFIGURATION

Voltage

JP8

Mixed mode

pins 1 & 2 closed

3.3v

pins 2 & 3 closed

CPU CLOCK SPEED CONFIGURATION

Speed

JP6

JP7

JP18

50MHz

pins 2 & 3 closed

pins 2 & 3 closed

pins 1 & 2 closed

60MHz

pins 1 & 2 closed

pins 2 & 3 closed

pins 2 & 3 closed

66MHz

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

CPU CLOCK RATIO CONFIGURATION

Core/bus ratio

JP14

JP15

1.5

pins 1 & 2 closed

pins 1 & 2 closed

2

pins 2 & 3 closed

pins 1 & 2 closed

2.5

pins 2 & 3 closed

pins 2 & 3 closed

3

pins 1 & 2 closed

pins 2 & 3 closed

CPU VOLTAGE CONFIGURATION

Voltage

JP17

3.3v

pins 1 & 2 closed

3.4v

pins 2 & 3 closed

3.5v

pins 4 & 5 closed

VRM CONFIGURATION

CPU type

CN7

P54C

pins 4 & 5, 6 & 7, 19 & 20, 21 & 22 closed

P55C

VRM installed

Note: Pin 1 is shown for clarification purposes only.