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UL486 P3 PC

QDI COMPUTER, INC.

UL486 P3 PC

Processor

80486SX/80486DX/80486DX2/80486DX4

Processor Speed

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

Chip Set

FOREX

Max. Onboard DRAM

32MB

Cache

32/64/128/256KB

BIOS

AMI

Dimensions

254mm x 218mm

I/O Options

32-bit VESA local bus slots (2), green PC connector

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

J2

Speaker

J8

Reset switch

J4

Green PC connector

JP19

Turbo LED

J5

Green PC connector

JP20

Turbo switch

J6

Green PC connector

JP21

Power LED & keylock

J7

32-bit VESA local bus slots

SL1 - SL3

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Battery type select internal

J1

Closed

 

Battery type select external

J1

Open

Power good signal detect from power supply

JP1

pins 1 & 2 closed

 

Power good signal detect from board

JP1

pins 2 & 3 closed

VESA card select normal

JP3

pins 1 & 2 closed

 

VESA card select Viper 9000 card only

JP3

pins 2 & 3 closed

Factory configured - do not alter

JP7

Open

Factory configured - do not alter

JP8

Open

DRAM bank select Bank 0 or Banks 1 & 2 used

JP27

pins 1 & 2 closed

 

DRAM bank select Banks 0, 1, & 2 used

JP27

pins 2 & 3 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

1MB

(4) 256K x 9

NONE

NONE

2MB

NONE

(1) 256K x 36

(1) 256K x 36

2MB

(4) 256K x 9

NONE

(1) 256K x 36

4MB

NONE

(1) 512K x 36

(1) 512K x 36

4MB

NONE

(1) 1M x 36

NONE

4MB

(4) 1M x 9

NONE

NONE

6MB

NONE

(1) 1M x 36

(1) 512K x 36

6MB

(4) 1M x 9

NONE

(1) 512K x 36

8MB

NONE

(1) 1M x 36

(1) 1M x 36

8MB

(4) 1M x 9

NONE

(1) 1M x 36

12MB

NONE

(1) 2M x 36

(1) 1M x 36

12MB

(4) 1M x 9

NONE

(1) 2M x 36

16MB

NONE

(1) 2M x 36

(1) 2M x 36

16MB

(4) 4M x 9

NONE

NONE

24MB

NONE

(1) 4M x 36

(1) 2M x 36

24MB

(4) 4M x 9

NONE

(1) 2M x 36

32MB

NONE

(1) 4M x 36

(1) 4M x 36

32MB

(4) 4M x 9

NONE

(1) 4M x 36

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

32KB

(4) 8K x 8

NONE

(1) 8K x 8

64KB

(4) 8K x 8

(4) 8K x 8

(1) 8K x 8

128KB

(4) 32K x 8

NONE

(1) 8K x 8

256KB

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

Note: The actual location of the cache banks may vary.

CACHE JUMPER CONFIGURATION

Size

JP9

JP10

JP11

JP12

JP13

32KB

2 & 3

Open

Open

Open

Open

64KB

1 & 2

Open

Open

Open

Closed

128KB

2 & 3

2 & 3

Open

Closed

Closed

256KB

1 & 2

1 & 2

Closed

Closed

Closed

Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION

Type

JP14

JP15

U50

80486SX

Open

2 & 3

3 & 6, 4 & 5

80486DX

1 & 2

1 & 2, 3 & 4

3 & 6, 4 & 5

80486DX2

1 & 2

1 & 2, 3 & 4

3 & 6, 4 & 5

80486DX4

1 & 2

1 & 2, 3 & 4

uses voltage converter

Note: Pins designated should be in the closed position.

CPU SPEED CONFIGURATION

Speed

JP4

JP5

JP6

25MHz

Closed

Open

Open

33MHz

Closed

Closed

Closed

50iMHz

Closed

Open

Open

50MHz

Open

Open

Closed

66iMHz

Closed

Closed

Closed

100iMHz

Closed

Closed

Closed

CPU CLOCK SPEED CONFIGURATION

Speed

JP22

1.5x

pins 2 & 3 closed

2x

pins 1 & 2 closed

3x

Open

BUS SPEED CONFIGURATION

CPU speed

JP16

<= 33MHz

Open

> 33MHz

Closed