GCH SYSTEMS, INC.

33MHz 80486 Baby AT (Rev. A)

Processor

80486DX

Processor Speed

33MHz

Chip Set

ETEQ

Max. Onboard DRAM

32MB

Cache

64/256KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

None

NPU Options

4167

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

JP1

Reset switch

JP24

Power LED & keylock

JP22

Turbo LED

JP25

Speaker

JP23

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Monitor type select color

JP2

Closed

 

Monitor type select monochrome

JP2

Open

Factory configured - do not alter

JP3

Open

Factory configured - do not alter

JP4

Open

Factory configured - do not alter

JP5

pins 1 & 2 closed

Factory configured - do not alter

JP6

Open

Factory configured - do not alter

JP7

pins 2 & 3 closed

Factory configured - do not alter

JP10

pins 2 & 3 closed

Factory configured - do not alter

JP11

Open

Factory configured - do not alter

JP12

Open

Factory configured - do not alter

JP13

Open

Factory configured - do not alter

JP16

Open

Factory configured - do not alter

JP18

Open

Factory configured - do not alter

JP19

pins 2 & 3 closed

Factory configured - do not alter

JP21

Closed

NPU disabled

JP20

Open

 

NPU enabled

JP20

Closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

1MB

(4) 256K x 9

NONE

2MB

(4) 256K x 9

(4) 256K x 9

4MB

(4) 1M x 9

NONE

5MB

(4) 1M x 9

(4) 256K x 9

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

17MB

(4) 4M x 9

(4) 256K x 9

20MB

(4) 4M x 9

(4) 1M x 9

32MB

(4) 4M x 9

(4) 4M x 9

CACHE CONFIGURATION

Size

Bank 0

TAG

64KB

(8) 8K x 8

(2) 16K x 4

256KB

(8) 32K x 8

(2) 16K x 4

CACHE JUMPER CONFIGURATION

Size

JP8

JP9

JP14

JP15

JP17

64KB

2 & 3

2 & 3

Open

Open

Open

256KB

1 & 2

1 & 2

Closed

Closed

Closed

Note: Pins designated should be in the closed position.