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486-VL BUS ANTI-VIRUS

UNIDENTIFIED

486-VL BUS ANTI-VIRUS

Processor

80486SX/80487SX/80486DX/80486DX2/Pentium Overdrive

Processor Speed

25/33/40/50(internal)/50/66(internal)MHz

Chip Set

OPTi

Max. Onboard DRAM

32MB

Cache

64/128/256KB

BIOS

AMI

Dimensions

254mm x 218mm

I/O Options

32-Bit VESA local bus slots (2)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

J1

Turbo switch

JP28

Power LED & keylock

J5

32-bit VESA Local bus slot

S1

Speaker

J6

32-bit VESA Local bus slot

S2

Turbo LED

JP24

Reset switch

SW1

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Monitor type select color

JP1

Closed

 

Monitor type select monochrome

JP1

Open

Factory configured - do not alter

JP32

pins 2 & 3 closed

ADS # signal delay enabled

JP40

pins 2 & 3 closed

 

ADS # signal delay disabled

JP40

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

32MB

(4) 4M x 9

(4) 4M x 9

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

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) 16K x 8/(1) 32K x 8

Note:The exact locations of Bank 0 and Bank 1 are unknown.

CACHE JUMPER CONFIGURATION

Size

JP7

JP9

JP15

JP22

64KB

pins 2 & 3 closed

Open

Open

Open

128KB

pins 1 & 2 closed

Closed

Closed

Open

256KB

pins 2 & 3 closed

Closed

Closed

Closed

Note:The exact locations of Bank 0 and Bank 1 are unknown.

CPU TYPE CONFIGURATION

Type

JP11

JP12

80486SX

Open

pins 2 & 3 closed

80487SX

pins 2 & 3 closed

pins 1 & 2 and 3 & 4 closed

80486DX

pins 1 & 2 closed

pins 1 & 2 and 3 & 4 closed

80486DX2

pins 1 & 2 closed

pins 1 & 2 and 3 & 4 closed

Pentium Overdrive

pins 2 & 3 closed

pins 1 & 2 and 3 & 4 closed

CPU SPEED CONFIGURATION

Speed

JP10

JP16

JP23

25MHz

Open

pins 2 & 3 closed

Closed

33MHz

Closed

pins 2 & 3 closed

Open

40MHz

Open

pins 2 & 3 closed

Open

50i MHz

Open

pins 2 & 3 closed

Closed

50MHz

Open

pins 1 & 2 closed

Closed

66i MHz

Closed

pins 2 & 3 closed

Open

VESA WAIT STATE/BUS SPEED CONFIGURATION

CPU speed

Wait states

J20

J21

< 33MHz

0 wait states

Closed

Closed

> 33MHz

1 wait state

Open

Open

VL-BUS MASTER/SLAVE CONFIGURATION

Setting

JP13

JP18

Slave mode

Closed

Open

 

Master & slave

Closed

Open

Note:For VL-Bus device to support both master and slave mode, an additional PAL must be inserted in U43

VL-BUS SETUP MODE CONFIGURATION

Setting

JP29

JP39

Setup 0

pins 1 & 2 closed

pins 1 & 2 closed

 

Setup 1

pins 1 & 2 closed

pins 2 & 3 closed

 

Setup 2

pins 2 & 3 closed

pins 2 & 3 closed