INFORMTECH INTERNATIONAL, INC.

BABY 286MB Ver. 1.20

Processor

80286

Processor Speed

5/6/8/10MHz

Chip Set

C & T

Max. Onboard DRAM

1MB

SRAM Cache

None

BIOS

Unidentified

Dimensions

330mm x 218mm

I/O Options

Auxilliary keyboard connector

NPU Options

80287

USER CONFIGURABLE SETTINGS

Function

Jumper/Switch

Position

»

Power good signal detect from power supply

J14

pins 2 & 3 closed

 

Power good signal detect from board

J14

pins 1 & 2 closed

 

BIOS type select 27256

J15

pins 1 & 2 closed

 

BIOS type select 27128

J15

pins 2 & 3 closed

»

Factory configured - do not alter

SW1/Switch 5

closed

»

Monitor type select monochrome

SW1/Switch 6

open

 

Monitor type select color

SW1/Switch 6

closed

CONNECTIONS

Purpose

Location

Purpose

Location

Speaker

P1

Power LED & keylock

P4

Turbo LED

P2

Auxilliary keyboard

P6

Reset switch

P3

External battery

P8

DRAM CONFIGURATION

Size

Bank 0

Bank 1

SW1/Switch 3

SW2/Switch 4

 

256KB

(18) 4164

(18) 4164

closed

open

 

512KB

(18) 41256

NONE

open

open

»

640KB

(18) 41256

(18) 4164

closed

closed

 

1024KB

(18) 41256

(18) 41256

open

closed

NPU SPEED CONFIGUARATION

NPU Speed

Clock Rate

J7

J8

80287-12

8/12MHz

open

pins 1 & 2 closed

80287-12

6.7/10MHz

open

pins 1 & 2 closed

80287-10

6.7/10MHz

open

pins 1 & 2 closed

80287-10

5.3/8MHz

closed

pins 2 & 3 closed

80287-8

5.3/8MHz

closed

pins 2 & 3 closed

80287-8

4.4/6MHz

closed

pins 2 & 3 closed

80287-6

4.4/6MHz

closed

pins 2 & 3 closed

80287-6

2.6/4MHz

closed

pins 1 & 2 closed

BATTERY TYPE CONFIGUARATION

Battery

J12

J13

»

Internal lithium (2 x 3VDC)

pins 1 & 2 closed

closed

 

External lithium (6VDC)

open

closed

 

External alkaline (6VDC)

open

open

SYSTEM CLOCK WAIT STATE CONFIGURATION

Speed

Wait State

J2

J5

J8

J11

10MHz

0

closed

pins 1 & 2

closed

pins 1 & 2

10MHz

1

open

pins 1 & 2

open

pins 1 & 2

12MHz

0

closed

pins 2 & 3

closed

pins 2 & 3

12MHz

1

open

pins 2 & 3

open

pins 2 & 3

Note:Pins designated should be in the closed position.

I/O MODE WAIT STATE CONFIGURATION

Wait States

8-BIT

I/O

8-BIT

Memory

16-BIT

I/O

16-BIT

Memory

SW1/

Switch 1

SW1/

Switch 2

0

0 (6)

0 (6)

0 (3)

0 (3)

closed

closed

1

0 (6)

0 (6)

0 (3)

1 (4)

closed

open

2

1 (7)

1 (7)

1 (4)

1 (4)

open

closed

3

2 (8)

2 (8)

1 (4)

2 (5)

open

open