...because we can't all be on the bleeding edge...





486 EISA SI-6

AUSTIN COMPUTER SYSTEMS

486 EISA SI-6

Processor

80486SX/80487SX/80486DX/80486DX2

Processor Speed

33/50/66(internal)MHz

Chip Set

SIS

Max. Onboard DRAM

32MB (128MB with BIOS upgrade)

Cache

64/128/256KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

None

NPU Options

4167

CONNECTIONS

Purpose

Location

Purpose

Location

Power LED & keylock

J1

Turbo switch

J4

Speaker

J2

Turbo LED

J5

Reset switch

J3

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Factory configured - do not alter

JP9

pins 1 & 2 closed

Factory configured - do not alter

JP21

pins 1 & 2 closed

Burst mode select enabled

JP23

Closed

 

Burst mode select disabled

JP23

Open

Monitor type select color

JP24

Open

 

Monitor type select monochrome

JP24

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

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

None

20MB

(4) 1M x 9

(4) 4M x 9

32MB

(4) 4M x 9

(4) 4M x 9

64MB

(4) 16M x 9

None

128MB

(4) 16M x 9

(4) 16M x 9

Note : The main board will only accept 16M x 9 SIMMs if the BIOS upgrade is installed.

CACHE CONFIGURATION

Size

Bank 0

Bank 1

64KB

(4) 8K x 8

(4) 8K x 8

128KB

(4) 32K x 8

NONE

256KB

(4) 32K x 8

(4) 32K x 8

Note : Tag chips are factory installed and are not configurable.

CACHE JUMPER CONFIGURATION

Size

JP1

JP2

JP3

JP4

JP12

JP13

64KB

2 & 3

1 & 2

1 & 2

1 & 2

1 & 2

1 & 2

128KB

1 & 2

2 & 3

1 & 2

2 & 3

1 & 2

2 & 3

256KB

4 & 5

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION

Type

JP5

JP7

JP15

80486SX

pins 2 & 3 closed

pins 2 & 3 closed

Open

80487SX

pins 2 & 3 closed

pins 1 & 2 closed

Closed

80486DX

pins 1 & 2 closed

pins 1 & 2 closed

Closed

BATTERY TYPE CONFIGURATION

Type

JP10

JP11

DS1287

pins 1 & 2 closed

pins 1 & 2 closed

DS1488

pins 2 & 3 closed

pins 2 & 3 closed