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PCI/I-486SP3

ASUS COMPUTER INTERNATIONAL

PCI/I-486SP3

Processor

80486SX/80487SX/80486DX/ODP486SX/80486DX2/Pentium Overdrive

Processor Speed

25/33/50(internal)/66(internal)MHz

Chip Set

Intel

Max. Onboard DRAM

128MB

Cache

128/256/512KB

BIOS

Award

Dimensions

330mm x 218mm

I/O Options

32-bit PCI local bus slots (3), floppy drive interface, IDE interface, parallel port, SCSI interface, serial ports (2)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Power LED & keylock

CON1

IDE interface LED

J22

Speaker

CON2

32-bit PCI bus slot

PCI1

Turbo LED

CON3

32-bit PCI bus slot

PCI2

Reset switch

CON4

32-bit PCI bus slot

PCI3

Turbo switch

CON5

Serial port 1

S1

Floppy drive interface

FDD

Serial port 2

S2

IDE interface

IDE

Parallel port

S3

SCSI interface LED

J7

SCSI interface

SCSI

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

BIOS ROM select (2) 27512

J6

pins 2 & 3 closed

 

BIOS ROM select (1) 271000

J6

pins 1 & 2 closed

IDE I/O Channel Ready disabled

J16

Open

 

IDE I/O Channel Ready enabled

J16

Closed

Factory configured - do not alter

J23

Closed

Factory configured - do not alter

J24

Closed

Secondary cache speed 0 wait states

J33

pins 1 & 2 closed

 

Secondary cache speed 1 wait state

J33

pins 2 & 3 closed

Factory configured - do not alter

J34

pins 2 & 3 closed

Factory configured - do not alter

J35

pins 1 & 2 closed

Secondary cache enabled

J36

pins 1 & 2 closed

 

Secondary cache disabled

J36

pins 2 & 3 closed

Factory configured - do not alter

J47

pins 2 & 3 closed

BIOS type select EPROM

J48

pins 2 & 3 closed

 

BIOS type select Flash BIOS

J48

pins 1 & 2 closed

Onboard SCSI interface enabled

J51

Open

 

Onboard SCSI interface disabled

J51

Closed

Floppy, IDE, Parallel, and Serial ports enabled

JSMC

pins 1 & 2 closed

 

Floppy, IDE, Parallel, and Serial ports disabled

JSMC

pins 2 & 3 closed

ONBOARD SCSI INTERFACE CONFIGURATION

Onboard SCSI

J17

J18

Present (PCI2 is slave)

Open

Open

Absent (PCI2 is master)

Closed

Closed

INTERRUPT IRQ5 CONFIGURATION

Bus

J3

ISA

pins 1 & 2 closed

PCI (INT A)

pins 2 & 3 closed

INTERRUPT IRQ9 CONFIGURATION

Bus/Device

J1 & J2

ISA

J1/pin 1 & J2/pin 1 closed

PCI (INT D)

J1/pin 3 & J2/pin 3 closed

SCSI

J1/pin 2 & J2/pin 2 closed

INTERRUPT IRQ11 CONFIGURATION

Bus

J4

ISA

pins 1 & 2 closed

PCI (INT B)

pins 2 & 3 closed

Note: The PCI bus can have only one IRQ on INT B (i.e. you can use IRQ11 or IRQ14 but not both).

INTERRUPT IRQ14 CONFIGURATION

Bus

J49

J50

ISA

pins 2 & 3 closed

open

PCI (INT A)

pins 1 & 2 closed

open

PCI (INT B)

open

closed

Note: The PCI bus can have only one IRQ on INT B (i.e. you can use IRQ11 or IRQ14 but not both). The PCI bus can have only one IRQ on INT A (i.e. you can use IRQ5 or IRQ14 but not both). The PCI bus can have only one IRQ on INT B (i.e. you can use IRQ11 or IRQ14 but not both).

INTERRUPT IRQ15 CONFIGURATION

Bus

J5

ISA

pins 1 & 2 closed

PCI (INT C)

pins 2 & 3 closed

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

128KB

(4) 32K x 8

NONE

(1) 8K x 8

256KB

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

512KB

(4) 128K x 8

NONE

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

J25

J26

J37

J38

128KB

pins 2 & 3 closed

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

256KB

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

pins 1 & 2 closed

512KB

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

Note:Pins designated should be in the closed position.

CPU TYPE CONFIGURATION

CPU

Socket

CP1

CP2

CP3

J43

80486SX

PGA

pins 2 & 3

pins 1 & 2

Open

Closed

80486SX

PQFP

1 & 2 and 3 & 4

pins 2 & 3

pins 2 & 3

Closed

80487SX

PGA

1 & 2 and 3 & 4

pins 2 & 3

pins 2 & 3

Closed

80486DX

PGA

1 & 2 and 3 & 4

pins 1 & 2

pins 1 & 2

Closed

ODP486SX

PGA

1 & 2 and 3 & 4

pins 2 & 3

pins 2 & 3

Closed

80486DX2

PGA

1 & 2 and 3 & 4

pins 1 & 2

pins 1 & 2

Closed

Pentium Overdrive

PGA

1 & 2 and 3 & 4

pins 2 & 3

pins 2 & 3

Open

Note:Pins designated should be in the closed position.

CPU SPEED CONFIGURATION

Speed

CS1

J31

J32

25MHz

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

33MHz

pins 1 & 2 closed

pins 1 & 2 closed

pins 2 & 3 closed

50i MHz

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

66i MHz

pins 1 & 2 closed

pins 1 & 2 closed

pins 2 & 3 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

2MB

(1) 256K x 36

(1) 256K x 36

NONE

NONE

4MB

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

4MB

(1) 512K x 36

(1) 512K x 36

NONE

NONE

6MB

(1) 256K x 36

(1) 256K x 36

(1) 512K x 36

(1) 512K x 36

6MB

(1) 512K x 36

(1) 512K x 36

(1) 256K x 36

(1) 256K x 36

8MB

(1) 512K x 36

(1) 512K x 36

(1) 512K x 36

(1) 512K x 36

8MB

(1) 1M x 36

(1) 1M x 36

NONE

NONE

10MB

(1) 256K x 36

(1) 256K x 36

(1) 1M x 36

(1) 1M x 36

10MB

(1) 1M x 36

(1) 1M x 36

(1) 256K x 36

(1) 256K x 36

12MB

(1) 512K x 36

(1) 512K x 36

(1) 1M x 36

(1) 1M x 36

12MB

(1) 1M x 36

(1) 1M x 36

(1) 512K x 36

(1) 512K x 36

16MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

16MB

(1) 2M x 36

(1) 2M x 36

NONE

NONE

18MB

(1) 256K x 36

(1) 256K x 36

(1) 2M x 36

(1) 2M x 36

18MB

(1) 2M x 36

(1) 2M x 36

(1) 256K x 36

(1) 256K x 36

20MB

(1) 512K x 36

(1) 512K x 36

(1) 2M x 36

(1) 2M x 36

20MB

(1) 2M x 36

(1) 2M x 36

(1) 512K x 36

(1) 512K x 36

24MB

(1) 1M x 36

(1) 1M x 36

(1) 2M x 36

(1) 2M x 36

24MB

(1) 2M x 36

(1) 2M x 36

(1) 1M x 36

(1) 1M x 36

32MB

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

32MB

(1) 4M x 36

(1) 4M x 36

NONE

NONE

34MB

(1) 256K x 36

(1) 256K x 36

(1) 4M x 36

(1) 4M x 36

34MB

(1) 4M x 36

(1) 4M x 36

(1) 256K x 36

(1) 256K x 36

36MB

(1) 512K x 36

(1) 512K x 36

(1) 4M x 36

(1) 4M x 36

36MB

(1) 4M x 36

(1) 4M x 36

(1) 512K x 36

(1) 512K x 36

40MB

(1) 1M x 36

(1) 1M x 36

(1) 4M x 36

(1) 4M x 36

40MB

(1) 4M x 36

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

48MB

(1) 2M x 36

(1) 2M x 36

(1) 4M x 36

(1) 4M x 36

48MB

(1) 4M x 36

(1) 4M x 36

(1) 2M x 36

(1) 2M x 36

64MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

64MB

(1) 8M x 36

(1) 8M x 36

NONE

NONE

66MB

(1) 256K x 36

(1) 256K x 36

(1) 8M x 36

(1) 8M x 36

66MB

(1) 8M x 36

(1) 8M x 36

(1) 256K x 36

(1) 256K x 36

68MB

(1) 512K x 36

(1) 512K x 36

(1) 8M x 36

(1) 8M x 36

68MB

(1) 8M x 36

(1) 8M x 36

(1) 512K x 36

(1) 512K x 36

72MB

(1) 1M x 36

(1) 1M x 36

(1) 8M x 36

(1) 8M x 36

72MB

(1) 8M x 36

(1) 8M x 36

(1) 1M x 36

(1) 1M x 36

80MB

(1) 2M x 36

(1) 2M x 36

(1) 8M x 36

(1) 8M x 36

80MB

(1) 8M x 36

(1) 8M x 36

(1) 2M x 36

(1) 2M x 36

96MB

(1) 4M x 36

(1) 4M x 36

(1) 8M x 36

(1) 8M x 36

96MB

(1) 8M x 36

(1) 8M x 36

(1) 4M x 36

(1) 4M x 36

128MB

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36