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MBA-386B-25

DYNA MICRO, INC.

MBA-386B-25

Processor

80386DX

Processor Speed

25MHz

Chip Set

UMC

Max. Onboard DRAM

12MB

Cache

None

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

None

NPU Options

80387/3167

CONNECTIONS

Purpose

Location

Purpose

Location

Speed display

J1

Speaker

J5

Auxiliary keyboard

J2

Power LED & keylock

J6

Reset switch

J3 & J14

Turbo LED

J7

Turbo switch

J4 & J13

External battery

J11

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Monitor type select monochrome

J8

open

 

Monitor type select color

J8

closed

NPU type select 3167 or none

J9

closed

 

NPU type select 80387

J9

open

Battery select internal

J12

pins 2 & 3 closed

 

Battery select external

J12

pins 1 & 2 closed

Factory configured - do not alter

JP6

pins 1 & 2 closed

Factory configured - do not alter

JP7

pins 2 & 3 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

1MB

(4) 256K x 9

NONE

NONE

2MB

(4) 256K x 9

(4) 256K x 9

NONE

3MB

(4) 256K x 9

(4) 256K x 9

(4) 256K x 9

4MB

(4) 1M x 9

NONE

NONE

8MB

(4) 1M x 9

(4) 1M x 9

NONE

12MB

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

DRAM SWITCH CONFIGURATION

Size

SW1/1

SW1/2

SW1/3

1MB

On

On

On

2MB

On

Off

On

3MB

On

Off

Off

4MB

Off

On

On

8MB

Off

Off

On

12MB

Off

Off

Off

DRAM SPEED CONFIGURATION

Speed

SW1/1

SW1/2

SW1/3

80ns

On

On

On

100ns

On

Off

On