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EISA 486WB

DATAEXPERT CORPORATION

EISA 486WB

Processor

80486SX/80486DX/ODP486SX

Processor Speed

20/25/33/50MHz

Chip Set

OPTI

Max. Onboard DRAM

128MB

SRAM Cache

64/128/256/512KB

BIOS

AMI

Dimensions

330.2mm x 218.4mm

I/O Options

None

NPU Options

4167

CONNECTIONS

Purpose

Location

Purpose

Location

Power LED & keylock

J1

Turbo switch

J5

Speaker

J2

Turbo LED

J6

Reset switch

J3

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Monitor type select color

JP13

closed

 

Monitor type select monochrome

JP13

open

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

64MB

(4) 16M x 9

NONE

128MB

(4) 16M x 9

(4) 16M x 9

SRAM JUMPER CONFIGURATION

Jumper

64KB

128KB

256KB

512KB

JP4

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

pins 1 & 2 closed

JP5

open

open

closed

closed

JP6

open

open

open

closed

JP7

open

closed

closed

closed

JP8

open

closed

closed

closed

JP9

open

open

closed

closed

JP10

open

open

open

closed

SRAM CONFIGURATION

Size

Cache SRAM

Location

TAG (U15)

TAG (U16)

TAG (U17 & 18)

64KB

(8) 8K x 8

Banks 0 & 1

(1) 8K x 8

NONE

(1) 64K x 1

128KB

(4) 32K x 8

Bank 0

(1) 8K x 8

NONE

(1) 64K x 1

256KB

(8) 32K x 8

Banks 0 & 1

(1) 8K x 8

(1) 8K x 8

(1) 64K x 1

512KB

(4) 128K x 8

Bank 0

(1) 32K x 8

NONE

(1) 64K x 1

CPU JUMPER CONFIGURATION

CPU

Jumper JP1

Jumper JP2

Jumper JP3

JP15

ODP486SX

pins 1 & 2 and 3 & 4 closed

open

pins 1 & 2 closed

pins 1 & 2 closed

80486DX

pins 1 & 2 and 3 & 4 closed

open

pins 2 & 3 closed

pins 1 & 2 closed

80486SX

pins 2 & 3 closed

closed

open

pins 2 & 3 closed

CPU SPEED CONFIGURATION

Speed

Jumper JP11

Jumper JP12

JP14

25MHz

open

open

pins 2 & 3 closed

33MHz

open

closed

pins 2 & 3 closed

50MHz

closed

closed

pins 1 & 2 closed