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VL/ISA-PB486P3

QDI COMPUTER, INC.

VL/ISA-PB486P3

Processor

80486SX/CX486DX/80486DX/SL80486DX/80486DX2/(SL)80486DX2/ AM486/80486DX4

Processor Speed

25/33/40/50(internal)/50/66(internal)/75(internal)/80(internal)/ 100(internal)MHz

Chip Set

OPTI

Video Chip Set

None

Maximum Onboard Memory

64MB

Maximum Video Memory

None

Cache

128/256/512KB

BIOS

AMI

Dimensions

254mm x 218mm

I/O Options

32-bit VESA local bus slots (3), green PC connector

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Power LED & keylock

J2

Reset switch

S1

Speaker

JP18

32-bit VESA local bus slots

SL1 - SL3

Green PC connector

JP21

Turbo LED

TBLED

Green PC connector

JP32

Turbo switch

TBSW

USER CONFIGURABLE SETTINGS

Function

Label

Position

»

Factory configured - do not alter

JP12

Open

»

Factory configured - do not alter

JP14

Pins 1 & 2 closed

»

Factory configured - do not alter

JP23

Open

»

CMOS memory normal operation

JP26

Pins 2 & 3 closed

 

CMOS memory clear

JP26

Pins 1 & 2 closed

»

Monitor type select color

JP30

Closed

 

Monitor type select monochrome

JP30

Open

»

Factory configured - do not alter

JP37

Pins 1 & 2 closed

»

Factory configured - do not alter

JP44

Pins 2 & 3 closed

»

Factory configured - do not alter

JP45

Pins 2 & 3 closed

»

Factory configured - do not alter

JP46

Pins 2 & 3 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

1MB

(4) 256K x 9

None

None

2MB

None

(1) 512K x 36

None

4MB (A)

(4) 1M x 9

None

None

4MB (B)

None

(1) 1M x 36

None

4MB (C)

None

(1) 512K x 36

(1) 512K x 36

6MB

None

(1) 512K x 36

(1) 1M x 36

8MB (A)

(4) 1M x 9

None

(1) 1M x 36

8MB (B)

None

(1) 2M x 36

None

8MB (C)

None

(1) 1M x 36

(1) 1M x 36

10MB

None

(1) 512K x 36

(1) 2M x 36

12MB (A)

(4) 1M x 9

None

(1) 2M x 36

12MB (B)

None

(1) 1M x 36

(1) 2M x 36

16MB (A)

(4) 4M x 9

None

None

16MB (B)

None

(1) 4M x 36

None

16MB (C)

None

(1) 2M x 36

(1) 2M x 36

16MB (D)

(4) 4M x 9

(1) 2M x 36

(1) 1M x 36

20MB (A)

(4) 1M x 9

None

(1) 4M x 36

20MB (A)

None

(1) 1M x 36

(1) 4M x 36

32MB (A)

(4) 4M x 9

None

(1) 4M x 36

32MB (B)

None

(1) 4M x 36

(1) 4M x 36

32MB (C)

None

(1) 8M x 36

None

64MB (A)

None

(1) 8M x 36

(1) 8M x 36

64MB (B)

(4) 4M x 9

(1) 8M x 36

(1) 4M x 36

Note: The location of banks 1 & 2 are unidentified.

DRAM JUMPER CONFIGURATION

Size

JP42

1MB

Pins 1 & 2 closed

2MB

Pins 1 & 2 closed

4MB (A)

Pins 1 & 2 closed

4MB (B)

Pins 1 & 2 closed

4MB (C)

Pins 1 & 2 closed

6MB

Pins 1 & 2 closed

8MB (A)

Pins 1 & 2 closed

8MB (B)

Pins 1 & 2 closed

8MB (C)

Pins 1 & 2 closed

10MB

Pins 1 & 2 closed

12MB (A)

Pins 1 & 2 closed

12MB (B)

Pins 1 & 2 closed

16MB (A)

Pins 1 & 2 closed

16MB (B)

Pins 1 & 2 closed

16MB (C)

Pins 1 & 2 closed

16MB (D)

Pins 2 & 3 closed

20MB (A)

Pins 1 & 2 closed

20MB (A)

Pins 1 & 2 closed

32MB (A)

Pins 1 & 2 closed

32MB (B)

Pins 1 & 2 closed

32MB (C)

Pins 1 & 2 closed

64MB (A)

Pins 1 & 2 closed

64MB (B)

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

Note: The location of banks 0 & 1 and the TAG are unidentified.

CACHE JUMPER CONFIGURATION

Size

JP10

JP11

JP13

JP35

128KB

Open

Closed

Pins 1 & 2 closed

Pins 1 & 2 closed

256KB

Closed

Closed

Pins 2 & 3 closed

Pins 1 & 2 closed

512KB

Closed

Closed

Pins 1 & 2 closed

Pins 2 & 3 closed

CPU SPEED SELECTION

Speed

JP38

JP39

25MHz

Open

Closed

33MHz

Closed

Open

40MHz

Open

Open

50iMHz

Open

Closed

50MHz

Closed

Closed

66iMHz

Closed

Open

75iMHz

Open

Closed

80iMHz

Open

Open

100iMHz

Closed

Open

CPU TYPE SELECTION

Type

JP3

JP4

JP5

JP6

JP7

80486SX

Open

Open

Open

1 & 2

Open

SL80486SX

Open

Open

Open

1 & 2

Open

CX486DX (1x)

1 & 2

Open

2 & 3

2 & 3

Open

CX486DX (2x)

1 & 2

Open

2 & 3

2 & 3

Open

80486DX

1 & 2

Open

2 & 3

1 & 2

Open

SL80486DX

1 & 2

Open

2 & 3

1 & 2

Open

80486DX2

1 & 2

Open

2 & 3

1 & 2

Open

AM486 3.3v (2x)

1 & 2

Open

2 & 3

1 & 2

2 & 3

AM486 3.3v (3x)

1 & 2

Open

2 & 3

1 & 2

1 & 2

80486DX4

1 & 2

Open

2 & 3

1 & 2

Open

Note: Pins designated should be in the closed position.

CPU TYPE SELECTION (CON’T)

Type

JP8

JP9

JP22

JP24

JP25

80486SX

2 & 3

Open

1 & 2

Open

Open

SL80486SX

2 & 3

Open

1 & 2

Closed

Closed

CX486DX (1x)

1 & 2

1 & 2

1 & 2

Open

Open

CX486DX (2x)

1 & 2

1 & 2

1 & 2

Open

Open

80486DX

1 & 2

Open

1 & 2

Open

Open

SL80486DX

1 & 2

Open

1 & 2

Closed

Closed

80486DX2

1 & 2

Open

1 & 2

Open

Open

AM486 3.3v (2x)

1 & 2

Open

1 & 2

Open

Open

AM486 3.3v (3x)

1 & 2

Open

1 & 2

Open

Open

80486DX4

1 & 2

Open

1 & 2

Closed

Closed

Note: Pins designated should be in the closed position.

CPU TYPE SELECTION (CON’T)

Type

JP27

JP36

JP40

JP43

80486SX

Open

Pins 1 & 2 closed

Open

Open

SL80486SX

Open

Pins 2 & 3 closed

Open

Open

CX486DX (1x)

Pins 1 & 2 closed

Pins 1 & 2 closed

Open

Open

CX486DX (2x)

Pins 2 & 3 closed

Pins 1 & 2 closed

Open

Open

80486DX

Open

Pins 1 & 2 closed

Open

Open

SL80486DX

Open

Pins 2 & 3 closed

Open

Open

80486DX2

Open

Pins 1 & 2 closed

Open

Open

AM486 3.3v (2x)

Open

Pins 1 & 2 closed

Open

Open

AM486 3.3v (3x)

Open

Pins 1 & 2 closed

Open

Open

80486DX4

Open

Pins 2 & 3 closed

Closed

Open

CPU VOLTAGE SELECTION

Voltage

JP1

3.3v

Open

5v

Closed

VL BUS WAIT STATE SELECTION

Setting

JP33

»

0

Open

 

1

Closed

VL BUS SPEED SELECTION

Speed

JP34

»

<= 33MHz

Open

 

>33 MHz

Closed