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GRAFIKA 4V2

DTK COMPUTER, INC.

GRAFIKA 4V2

Processor

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

Processor Speed

20/25/33/40/50(internal)/50/66(internal)MHz

Chip Set

SIS

Max. Onboard DRAM

32MB

Cache

64/128/256KB

BIOS

AMI/Award/DTK

Dimensions

260mm x 220mm

I/O Options

32-bit VESA local bus slots (2)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Power LED & keylock

CN1

Reset switch

CN5

Speaker

CN2

External battery

CN6

Turbo switch

CN3

32-bit VESA local bus slots

SL1 & SL2

Turbo LED

CN4

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Battery type select external

JP12

pins 1 & 2 closed

 

Battery type select internal

JP12

pins 2 & 3 closed

CPU type select PGA

JP16

Closed

 

CPU type select PQFP

JP16

Open

A20 chip supported

JP17

pins 1 & 2 closed

 

8042 chip supported

JP17

pins 2 & 3 closed

Monitor type select monochrome

JP18

Closed

 

Monitor type select color

JP18

Open

DRAM CONFIGURATION

Size

Bank 0

Bank 1

1MB

(4) 256K x 9

NONE

2MB

(4) 256K x 9

(4) 256K x 9

2MB

(4) 512K x 9

NONE

4MB

(4) 1M x 9

NONE

4MB

(4) 512K x 9

(4) 512K x 9

6MB

(4) 512K x 9

(4) 1M x 9

8MB

(4) 1M x 9

(4) 1M x 9

8MB

(4) 2M x 9

NONE

16MB

(4) 4M x 9

NONE

16MB

(4) 2M x 9

(4) 2M x 9

18MB

(4) 512K x 9

(4) 4M 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 (U14)

TAG (U15)

64KB

(4) 8K x 8

(4) 8K x 8

(1) 8K x 8

(1) 8K x 8

128KB

(4) 32K x 8

NONE

(1) 8K x 8

(1) 8K x 8

256KB

(4) 32K x 8

(4) 32K x 8

(1) 16K or (1) 32K x 8

(1) 16K or (1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

JP1

JP2

JP3

JP4

JP5

JP6

JP7

64KB

1 & 2

1 & 2

1 & 2

1 & 2

2 & 3

Open

1 & 2

128KB

2 & 3

1 & 2

2 & 3

1 & 2

1 & 2

1 & 2

2 & 3

256KB

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION

Type

JP13

JP14

JP15

80486SX

Open

pins 2 & 3 closed

Open

80487SX

pins 2 & 3 closed

pins 1 & 2 closed

Closed

80486DX

pins 1 & 2 closed

pins 1 & 2 closed

Closed

80486DX2

pins 1 & 2 closed

pins 1 & 2 closed

Closed

Pentium Overdrive

pins 2 & 3 closed

pins 1 & 2 closed

Closed

CPU SPEED CONFIGURATION

Speed

JP20

JP21

JP22

20MHz

Open

Open

Open

25MHz

Open

Open

Closed

33MHz

Closed

Closed

Closed

40MHz

Open

Closed

Closed

50iMHz

Open

Open

Closed

50MHz

Closed

Open

Open

66iMHz

Closed

Closed

Closed

VESA WAIT STATE CONFIGURATION

Wait states

JP9

JP11

0 wait states

pins 1 & 2 closed

pins 1 & 2 closed

1 wait state

pins 2 & 3 closed

pins 2 & 3 closed

VL BUS SPEED CONFIGURATION

CPU speed

JP8

JP10

<= 33MHz

pins 1 & 2 closed

pins 1 & 2 closed

> 33MHz

pins 2 & 3 closed

pins 2 & 3 closed