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IT386SK VER. 1.0

INFORMTECH INTERNATIONAL, INC.

IT386SK VER. 1.0

Processor

80386DX

Processor Speed

25/33/40MHz

Chip Set

C & T

Max. onboard DRAM

32MB

Cache

32/64/128/256KB

BIOS

Unidentified

Dimensions

330mm x 218mm

I/O Options

None

NPU Options

80387DX

CONNECTIONS

Purpose

Location

Purpose

Location

Turbo LED

JP4

Speaker

J24

External battery

J10

Reset switch

SW1

Power LED & keylock

J23

Turbo switch

SW2

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Monitor type select monochrome

JP1

Closed

 

Monitor type select color

JP1

Open

CMOS memory normal operation

JP2

Pins 2 & 3 closed

 

CMOS memory clear

JP2

Pins 1 & 2 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) 1M x 9

(4) 4M x 9

32MB

(4) 4M x 9

(4) 4M x 9

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG (U32)

TAG (U33)

TAG (U2)

32KB

(4) 8K x 8

NONE

(1) 2K x 4

(1) 2K x 4

(1) 2K x 4

64KB

(4) 8K x 8

(4) 8K x 8

(1) 4K x 4

(1) 4K x 4

(1) 4K x 4

128KB

(4) 32K x 8

NONE

(1) 8K x 4

(1) 8K x 4

(1) 8K x 4

256KB

(4) 32K x 8

(4) 32K x 8

(1) 16K x 4

(1) 16K x 4

(1) 16K x 4

CACHE JUMPER CONFIGURATION

Size

JP5

JP6

JP7

JP8

JP9

JP10

32KB

1 & 2

1 & 2

1 & 2

Open

2 & 3

2 & 3

64KB

2 & 3

1 & 2

1 & 2

Open

2 & 3

1 & 2

128KB

2 & 3

1 & 2

2 & 3

Closed

2 & 3

1 & 2

256KB

2 & 3

2 & 3

2 & 3

Closed

1 & 2

1 & 2

Note: Pins designated should be in the closed position.

AT BUS SPEED SELECTION

CPU speed

AT bus clock

JP3

25MHz

8.33MHz

Open

33MHz

8.33MHz

Closed

40MHz

10MHz

Closed