ABIT COMPUTER CORPORATION

386 AT3

Processor

AMD386DX/80386DX/CX486DLC/Ti486DLC/Ti486SXL2

Processor Speed

33/40MHz

Chip Set

ALI

Max. Onboard DRAM

192MB

Cache

32/128KB

BIOS

AMI/AWARD

Dimensions

230mm x 218mm

I/O Options

Green PC feature connector

NPU Options

80387DX

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

JP3

Speaker

JP11

Turbo switch

JP8

Power LED & keylock

JP12

Turbo LED

JP9

Green PC feature connector

JP15

Reset switch

JP10

   

USER CONFIGURABLE SETTINGS

Function

Jumper/Switch

Position

»

CMOS normal operation

JP2

pins 1 & 2

 

CMOS memory clear

JP2

pins 2 & 3

»

CPU clock select 33MHz

JP13

pins 1 & 2, 3 & 4

 

CPU clock select 40MHz

JP13

pins 5 & 6

»

128KB cache enabled

JP16

Closed

 

32KB cache enabled

JP16

Open

Note:Pins designated are in the closed position.

DRAM CONFIGURATION

Size

Bank 0

Bank 1/2

1MB

(4) 256K x 9

NONE

2MB

(4) 256K x 9

(1) 256K x 36

4MB

(4) 1M x 9

NONE

5MB

(4) 1M x 9

(1) 256K x 36

8MB

(4) 1M x 9

(1) 1M x 36

16MB

(4) 4M x 9

NONE

17MB

(4) 4M x 9

(1) 256K x 36

20MB

(4) 4M x 9

(1) 1M x 36

32MB

(4) 4M x 9

(1) 4M x 36

64MB

(4) 16M x 9

NONE

192MB

(4) 16M x 9

(1) 32M x 36

CACHE CONFIGURATION

Size

Bank 0

TAG

32KB

(4) 8K x 8

(1) 8K x 8

128KB

(4) 32K x 8

(1) 16K x 8

CPU TYPE CONFIGURATION

CPU Type

JP1

JP5

80386DX

pins 1 & 2 closed

pins 1 & 2 closed

80486DLC

pins 2 & 3 closed

pins 2 & 3 closed

GREEN FEATURE CONNECTOR CONFIGURATION

Pin

Function

1

HSYNC

2

Ground

3

VSYNC

4

Ground

5

ENVEDIO

6

Ground

7

Monitor AC power

8

Ground