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TYPHOON 486 VESA

TARGET MICRO

TYPHOON 486 VESA

Processor

80486SX/80487SX/80486DX/80486DX2

Processor Speed

20/25/33/50 (Internal)/50/66 (Internal)

Chip Set

Unichip

Max. onboard DRAM

128MB

Cache

32/64/128/256KB

BIOS

AMI

Dimensions

260mm x 220mm

I/O Options

32-bit VESA local bus slots (3)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

J4

Turbo switch

JP17

Power LED & keylock

J5

Reset switch

JP18

Speaker

J6

32-bit VESA local bus slots

S1, S2, & S3

Turbo LED

JP16

 

 

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Monitor type select color

JP1

Open

 

Monitor type select monochrome

JP1

Closed

CMOS memory normal operation

JP2

pins 1 & 2 closed

 

CMOS memory clear

JP2

pins 2 & 3 closed

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

32MB

(4) 4M x 9

(4) 4M x 9

64MB

(4) 16M x 9

NONE

80MB

(4) 16M x 9

(4) 4M x 9

128MB

(4) 16M x 9

(4) 16M x 9

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

32KB

(4) 8K x 8

NONE

8K x 8

64KB

(4) 8K x 8

(4) 8K x 8

8K x 8

128KB

(4) 32K x 8

NONE

8K x 8

256KB

(4) 32K x 8

(4) 32K x 8

32K x 8

CACHE JUMPER CONFIGURATION

Size

JP6

JP7

JP9

JP11

32KB

Open

Open

Open

pins 2 & 3

64KB

Open

Closed

Open

pins 1 & 2

128KB

Open

Closed

Closed

pins 1 & 2, 3 & 4

256KB

Closed

Closed

Closed

pins 1 & 2, 4 & 5

Note:Pins designated should be in the closed position.

VESA LOCAL BUS SELECT

Mode

JP40

JP41

JP42

VL-Bus Master

Open

Open

Open

VL-Bus Slave

Closed

Closed

Closed

VESA CLOCK CONFIGURATION

Mode

JP43

Adjusted VL-BUS clock

pins 1 & 2 closed

Normal VL-BUS clock

pins 2 & 3 closed

VESA BUS SPEED (ID3) CONFIGURATION

CPU speed

JP19 (ID3)

JP44

£ 33MHz

Open

pins 2 & 3 closed

> 33MHz

Closed

pins 1 & 2 closed

VESA ID4 CONFIGURATION

Setting

JP20 (ID4)

Reserved for future use

Closed

CPU SPEED CONFIGURATION

Speed

JP29

JP30

JP31

20MHz

Open

Closed

Closed

25MHz

Closed

Open

Closed

33MHz

Closed

Closed

Open

50i MHz

Closed

Open

Closed

50MHz

Open

Closed

Open

66i MHz

Closed

Closed

Open

CPU TYPE CONFIGURATION

Type

JP4

80486SX

5 & 6 closed

80487SX

pins 2 & 3, 4 & 5, 6 & 7 closed

80486DX

pins 1 & 2, 4 & 5, 6 & 7 closed

80486DX2

pins 1 & 2, 4 & 5, 6 & 7 closed