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BEK-V409

BEK-TRONIC TECHNOLOGY, INC.

BEK-V409

Processor

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

Processor Speed

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

Chip Set

UMC

Max. Onboard DRAM

128MB

Cache

32/64/128/256KB

BIOS

AMI

Dimensions

254mm x 218mm

I/O Options

32-bit VESA local bus slots (3)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

J1

Speaker

J5

Reset switch

J2

Power LED & keylock

J6

Turbo switch

J3

32-bit VESA local bus slots

SL1 - SL3

Turbo LED

J4

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Factory configured - do not alter

JP1

N/A

VESA card type select any card installed

JP3

pins 1 & 2 closed

 

VESA card type select Weitek 9000 only

JP3

pins 2 & 3 closed

ADS delay select no delays

JP5

pins 1 & 2 closed

 

ADS delay select 1 delay for 50MHz

JP5

pins 2 & 3 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

20MB

(4) 4M x 9

(4) 1M 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

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

JP12

JP13

JP14

JP15

JP16

32KB

Open

pins 2 & 3 closed

Open

Open

Open

64KB

Open

pins 1 & 2 closed

Open

Closed

Open

128KB

pins 2 & 3 closed

pins 2 & 3 closed

Open

Closed

Closed

256KB

pins 1 & 2 closed

pins 1 & 2 closed

Closed

Closed

Closed

CPU TYPE CONFIGURATION

Type

JP17

JP18

80486SX

pins 2 & 3 closed

Open

80487SX

pins 1 & 2, 3 & 4 closed

pins 2 & 3 closed

80486DX

pins 1 & 2, 3 & 4 closed

pins 1 & 2 closed

80486DX2

pins 1 & 2, 3 & 4 closed

pins 1 & 2 closed

Pentium Overdrive

pins 1 & 2, 3 & 4 closed

pins 1 & 2 closed

CPU SPEED CONFIGURATION

Speed

JP8

JP9

JP10

25MHz

Open

Closed

Closed

33MHz

Open

Open

Closed

40MHz

Closed

Closed

Open

50iMHz

Open

Closed

Closed

50MHz

Open

Closed

Open

66iMHz

Open

Open

Closed

BUS SPEED CONFIGURATION

CPU speed

JP11

<= 33MHz

Open

> 33MHz

Closed