SOYO COMPUTER CO., LTD.

PENTIUM (P54C) PCI MAINBOARD

Processor

Pentium

Processor Speed

90/100MHz

Chip Set

Unidentified

Max. Onboard DRAM

512MB

Cache

256/512KB

BIOS

Award

Dimensions

330mm x 218mm

I/O Options

32-bit PCI bus slots (4), green PC connector

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Power LED & keylock

J17

Green PC connector

J21

Speaker

J18

Green PC LED

J22

Reset switch

J19

32-bit PCI bus slots

SL1 - SL4

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

Ppeline address disabled

J24

Open

 

Pipeline address enabled

J24

Closed

»

Cache type select write back

J29

Open

 

Cache type select write through

J29

Closed

»

Monitor type select color

JP3

Closed

 

Monitor type select monochrome

JP3

Open

»

CMOS memory normal operation

JP5

Open

 

CMOS memory clear

JP5

Closed

»

Factory configured - do not alter

JP36

Closed

»

Factory configured - do not alter

JP37

Closed

»

Factory configured - do not alter

JP38

Closed

»

Factory configured - do not alter

JP39

Open

»

Factory configured - do not alter

JP40

Open

»

Factory configured - do not alter

JP41

Open

DRAM CONFIGURATION

Size

Bank 0

Bank 1

2MB

(2) 256K x 36

NONE

4MB

(2) 256K x 36

(2) 256K x 36

4MB

(2) 512K x 36

NONE

8MB

(2) 512K x 36

(2) 512K x 36

8MB

(2) 1M x 36

NONE

10MB

(2) 256K x 36

(2) 1M 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

20MB

(2) 512K x 36

(2) 2M 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

48MB

(2) 2M x 36

(2) 4M x 36

64MB

(2) 8M x 36

NONE

64MB

(2) 4M x 36

(2) 4M x 36

68MB

(2) 512K x 36

(2) 8M x 36

80MB

(2) 2M x 36

(2) 8M x 36

96MB

(2) 4M x 36

(2) 8M x 36

128MB

(2) 8M x 36

(2) 8M x 36

128MB

(2) 16M x 36

NONE

256MB

(2) 16M x 36

(2) 16M x 36

256MB

(2) 32M x 36

NONE

512MB

(2) 32M x 36

(2) 32M x 36

CACHE CONFIGURATION

Size

Bank 0

Bank 1

256KB

(4) 32K x 8

(4) 32K x 8

512KB

(4) 64K x 8

(4) 64K x 8

CACHE JUMPER CONFIGURATION

Size

J25

J26

256KB

pins 2 & 3 closed

pins 1 & 2 closed

512KB

pins 2 & 3 closed

pins 2 & 3 closed

CPU SPEED CONFIGURATION

Speed

JP31

JP34

JP35

90MHz

Closed

Open

Open

100MHz

Open

Closed

Closed

PCI IRQ CONFIGURATION (IRQ 10)

PIRQ

J44

J51

PIRQ 0

Open

pins 1 & 2 closed

PIRQ 1

Open

pins 2 & 3 closed

PIRQ 2

pins 1 & 2 closed

Open

PIRQ 3

pins 2 & 3 closed

Open

PCI IRQ CONFIGURATION (IRQ 11)

PIRQ

J45

J52

PIRQ 0

Open

pins 1 & 2 closed

PIRQ 1

Open

pins 2 & 3 closed

PIRQ 2

pins 1 & 2 closed

Open

PIRQ 3

pins 2 & 3 closed

Open

PCI IRQ CONFIGURATION (IRQ 12)

PIRQ

J46

J53

PIRQ 0

Open

pins 1 & 2 closed

PIRQ 1

Open

pins 2 & 3 closed

PIRQ 2

pins 1 & 2 closed

Open

PIRQ 3

pins 2 & 3 closed

Open

PCI IRQ CONFIGURATION (IRQ 14)

PIRQ

J47

J54

PIRQ 0

Open

pins 1 & 2 closed

PIRQ 1

Open

pins 2 & 3 closed

PIRQ 2

pins 1 & 2 closed

Open

PIRQ 3

pins 2 & 3 closed

Open

PCI IRQ CONFIGURATION (IRQ 15)

PIRQ

J48

J55

PIRQ 0

Open

pins 1 & 2 closed

PIRQ 1

Open

pins 2 & 3 closed

PIRQ 2

pins 1 & 2 closed

Open

PIRQ 3

pins 2 & 3 closed

Open

HOST BUS PREQUENCY CONFIGURATION

Setting

J30

Full speed

Open

2/3 speed

pins 1 & 2 closed

1/2 speed

pins 2 & 3 closed