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486/DX2 33i/50i(TC-4)

AUSTIN COMPUTER SYSTEMS

486/DX2 33i/50i(TC-4)

Processor

80486DX/80486DX2

Processor Speed

25/33/50(internal)/66(internal)MHz

Chip Set

C & T

Max. Onboard DRAM

32MB

Cache

64/128/256KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

32-bit external memory card slot

NPU Options

4167

CONNECTIONS

Purpose

Location

Purpose

Location

Speaker

JP7

Turbo LED

JP10

Power LED & keylock

JP8

Turbo switch

JP11

Reset switch

JP9

External battery

JP2

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Factory configured - do not alter

J3

N/A

Factory configured - do not alter

J4

N/A

CMOS memory normal operation

JP3

pins 1 & 2 closed

 

CMOS memory clear

JP3

pins 2 & 3 closed

Monitor type select color

JP4

pins 1 & 2 closed

 

Monitor type select monochrome

JP4

pins 2 & 3 closed

Factory configured - do not alter

JP5

N/A

DRAM type select identical

JP6

pins 1 & 2 closed

 

DRAM type select mixed

JP6

pins 2 & 3 closed

Factory configured - do not alter

JP12

N/A

Factory configured - do not alter

JP13

N/A

Factory configured - do not alter

JP15

N/A

Factory configured - do not alter

JP16

N/A

 

Note : The location of J3 is unidentified.

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) 256K x 9

(4) 1M x 9

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

32MB

(4) 4M x 9

(4) 4M x 9

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG 1

TAG 2

64KB

(4) 8K x 8

(4) 8K x 8

(1) 8K x 8

(1) 8K x 8

128KB

(4) 32K x 8

NONE

(1) 32K x 8

NONE

256KB

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

SR1

SR2

SR3

SR4

SR5

SR6

SR7

SR8

SR9

SR10

SR11

64KB

2 & 3

1 & 2

1 & 2

1 & 2

1 & 2

1 & 2

2 & 3

2 & 3

1 & 2

1 & 2

1 & 2

128KB

2 & 3

1 & 2

1 & 2

1 & 2

2 & 3

1 & 2

2 & 3

2 & 3

1 & 2

1 & 2

1 & 2

256KB

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

1 & 2

2 & 3

2 & 3

2 & 3

2 & 3

Note: Pins designated should be in the closed position.

BATTERY CONFIGURATION

Type

JP1

JP2

Internal

Closed

Open

External

Open

Closed