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





IT386

INFORMTECH INTERNATIONAL, INC.

IT386

Processor

80386SX

Processor Speed

25/33MHz

Chip Set

TI

Max. Onboard DRAM

16MB (12MB on external memory card)

Cache

32KB

BIOS

Phoenix

Dimensions

318mm x 220mm

I/O Options

Auxiliary keyboard connector, external memory card (IT-FEM386)

NPU Options

80387SX/3167

CONNECTIONS

Purpose

Location

Purpose

Location

Turbo switch

J8

Power LED & keylock

P5

Turbo LED

P2

Auxiliary keyboard connector

P20

Speaker

P3

External battery

P22

Reset switch

P4

External memory card

SL1

USER CONFIGURABLE SETTINGS

Function

Jumper/Switch

Position

Turbo enabled

J8

Open

 

Turbo disabled

J8

Closed

AT bus clock speed select 8MHz

J14

pins 2 & 3 closed

 

AT bus clock speed select 12MHz

J14

pins 1 & 2 closed

Power good signal detect from power supply

J18

pins 1 & 2 closed

 

Power good signal detect from board

J18

pins 2 & 3 closed

External memory card not installed

J25

pins 1 & 2 closed

 

External memory card installed

J25

pins 2 & 3 closed

80387 disabled (Weitek 3167 is auto detected)

SW1/1

Off

 

80387 enabled (Weitek 3167 is auto detected)

SW1/1

On

Monitor type select monochrome

SW1/2

Off

 

Monitor type select color/EGA/VGA

SW1/2

On

DRAM CONFIGURATION

Size

Bank 0

1MB

(4) 256K x 9

4MB

(4) 1M x 9

DRAM JUMPER CONFIGURATION

Size

J1

J12

J13

1MB

pins 1 & 2 closed

pins 2 & 3 closed

pins 2 & 3 closed

4MB

pins 2 & 3 closed

pins 1 & 2 closed

pins 1 & 2 closed

CACHE CONFIGURATION

Note: 32KB cache is factory installed and is not configurable. The location is unidentified.

DRAM SPEED CONFIGURATION

CPU speed

DRAM speed

J7

25MHz

120ns

Closed

25MHz

100ns

Open

33MHz

100ns

Closed

33MHz

80ns

Open

CPU SPEED CONFIGURATION

CPU speed

NPU speed

J4

J5

J6

J9

25MHz

20MHz

2 & 3

1 & 3, 2 & 4

2 & 3

2 & 3

25MHz

25MHz

2 & 3

2 & 4

1 & 2

2 & 3

33MHz

25MHz

1 & 2

1 & 2

2 & 3

1 & 2

33MHz

33MHz

1 & 2

Open

1 & 2

1 & 2

Note: Pins designated should be in the closed position.

I/O MODE CONFIGURATION

I/O bus mode

I/O wait state 8-bit

I/O wait state 16-bit

SW1/3

SW1/4

1

4

1

On

On

2

6

2

Off

On

3

8

3

On

Off

4

10

4

Off

Off

BATTERY TYPE CONFIGURATION

Type

J19

4.5v

pins 3 & 4 closed

3.6 - 4.5v

pins 1 & 3 closed

6v (without internal current limiting resistor)

pins 1 & 2 closed

6v (with internal current limiting resistor)

pins 2 & 4 closed