...because we can't all be on the bleeding edge...





486 WB-U1

CALIBER COMPUTER

486 WB-U1

Processor

80486SX/80487SX/80486DX/80486DX2

Processor Speed

16/20/25/33/50(internal)/50/66(internal)MHz

Chip Set

UNI

Max. Onboard DRAM

32MB

Cache

32/64/128/256KB

BIOS

AMI

Dimensions

240mm x 220mm

I/O Options

None

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

JP1

Turbo LED

JP16

Reset switch

JP14

Speaker

JP17

Turbo switch

JP15

Power LED & keylock

JP18

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

CMOS memory normal operation

JP2

pins 1 & 2 closed

 

CMOS memory clear

JP2

pins 2 & 3 closed

Gate A20 connection select KBGA20

JP10

pins 2 & 3 closed

 

Gate A20 connection select emulated KBGA20

JP10

pins 1 & 2 closed

Monitor type select color

JP12

Closed

 

Monitor type select monochrome

JP12

Open

DRAM CONFIGURATION

Size

Bank 0

Bank 1

1MB

(4) 256K x 9

NONE

2MB

(4) 256K x 9

(4) 256K x 9

4MB

(4) 1M x 9

NONE

5MB

(4) 256K x 9

(4) 1M x 9

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

20MB

(4) 4M x 9

(4) 1M x 9

20MB

(4) 1M x 9

(4) 4M x 9

32MB

(4) 4M x 9

(4) 4M x 9

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

CACHE JUMPER CONFIGURATION (WRITE-BACK)

Size

JP22

JP23

JP25

JP26

32KB

pins 2 & 3 closed

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

64KB

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

pins 1 & 2 closed

128KB

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

pins 2 & 3 closed

256KB

pins 1 & 2 closed

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

CACHE JUMPER CONFIGURATION FOR (WRITE-THROUGH)

Size

JP22

JP23

JP25

JP26

32KB

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

64KB

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

128KB

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

256KB

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

CACHE RESISTOR CONFIGURATION

Size

J27

J28

J29

J30

32KB

Installed

Not installed

Not installed

Not installed

64KB

Not installed

Installed

Not installed

Not installed

128KB

Not installed

Not installed

Installed

Not installed

256KB

Not installed

Not installed

Not installed

Installed

CPU CONFIGURATION

Type

Speed

JP3

JP7

JP9

JP13

80486SX

16MHz

1 & 2

Open

2 & 3

2 & 3

80486SX

20MHz

1 & 2

Open

2 & 3

2 & 3

80486SX

25MHz

2 & 3

Open

2 & 3

2 & 3

80487SX

20MHz

1 & 2

2 & 3

1 & 2, 3 & 4

1 & 2

80486DX

25MHz

1 & 2

1 & 2

1 & 2, 3 & 4

1 & 2

80486DX

33MHz

1 & 2

1 & 2

1 & 2, 3 & 4

1 & 2

80486DX

50MHz

2 & 3

1 & 2

1 & 2, 3 & 4

1 & 2

80486DX2

50MHz

1 & 2

1 & 2

1 & 2, 3 & 4

1 & 2

80486DX2

66MHz

1 & 2

1 & 2

1 & 2, 3 & 4

1 & 2

Note:Pins designated should be in the closed position.