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VL-BUS 486

ROBOTECH, INC.

VL-BUS 486

Processor

80486SX/80486DX/80486DX2

Processor Speed

20/25/33/50(internal)/50/66(internal)MHz

Chip Set

Toshiba

Max. Onboard DRAM

32MB

Cache

32/64/128/256KB

BIOS

AMI

Dimensions

254mm x 220mm

I/O Options

32-bit VESA local bus slots (2)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Turbo LED

JP3

Turbo switch

JP10

Speaker

JP7

External battery

JP25

Power LED & keylock

JP8

32-bit VESA local bus slots

SL1 & SL2

Reset switch

JP9

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Turbo switch select turbo

JP10

Closed

 

Turbo switch select normal

JP10

Open

CMOS memory normal operation

JP24

pins 2 & 3 closed

 

CMOS memory clear

JP24

pins 1 & 2 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) 256K x 9

(4) 1M x 9

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

20MB

(4) 1M x 9

(4) 4M 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

Bank 1

TAG

32KB

(4) 8K x 8

NONE

(1) 8K x 8

64KB

(4) 8K x 8

(4) 8K x 8

(1) 8K x 8

128KB

(4) 32K x 8

NONE

(1) 8K x 8

256KB

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

JP14

JP15

JP16

JP17

JP20

JP21

JP22

32KB

1 & 2

Open

Open

Open

2 & 3

2 & 3

1 & 2

64KB

2 & 3

Open

Open

Closed

1 & 2

2 & 3

1 & 2

128KB

1 & 2

Closed

Open

Closed

1 & 2

1 & 2

2 & 3

256KB

2 & 3

Closed

Closed

Closed

1 & 2

1 & 2

1 & 2

Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION

Type

JP12

JP13

JP18

80486SX

pins 2 & 3 closed

Open

pins 1 & 2 closed

80486DX/DX2

pins 1 & 2 closed

Closed

pins 2 & 3 closed