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AT-386

UNIDENTIFIED

AT-386

Processor

80386

Processor Speed

25MHz

Chip Set

VLSI

Video Chip Set

None

Maximum Onboard Memory

8MB

Maximum Video Memory

None

Cache

None

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

None

NPU Options

80287/80387/3167

CONNECTIONS

Purpose

Location

Purpose

Location

Power LED & keylock

J1

Reset switch

J13

Speaker

J2

External battery

J14

MIPS counter

J3

On board LED

J15

USER CONFIGURABLE SETTINGS

Function

Label

Position

Factory configured - do not alter

J4

Unidentified

 

80287 enabled

J5

Closed

 

80287 disabled

J5

Open

CMOS memory normal operation

J6

Pins 1 & 2 closed

 

CMOS memory clear

J6

Pins 2 & 3 closed

 

Monitor type select color

J11

Closed

 

Monitor type select monochrome

J11

Open

 

Reset valid after keyboard is locked

J12

Pins 1 & 2 closed

 

Reset valid at all times

J12

Pins 2 & 3 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

512MB

(2) 256K x 9

None

None

None

1MB

(2) 256K x 9

(2) 256K x 9

None

None

1.5MB

(2) 256K x 9

(2) 256K x 9

(2) 256K x 9

None

2MB

(2) 256K x 9

(2) 256K x 9

(2) 256K x 9

(2) 256K x 9

2MB

(2) 1M x 9

None

None

None

4MB

(2) 1M x 9

(2) 1M x 9

None

None

6MB

(2) 1M x 9

(2) 1M x 9

(2) 1M x 9

None

8MB

(2) 1M x 9

(2) 1M x 9

(2) 1M x 9

(2) 1M x 9

NPU SPEED SELECTION

Speed

J7

J8

Low speed

Pins 1 & 2 closed

Pins 2 & 3 closed

10MHz

Pins 2 & 3 closed

Pins 1 & 2 closed