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STEP 486 EISA VL (EV-3605)

EVEREX SYSTEMS, INC.

STEP 486 EISA VL (EV-3605)

Processor

80486SX/80487SX/80486DX

Processor Speed

20/25/33MHZ

Chip Set

C & T

Max. Onboard DRAM

64MB

SRAM Cache

256/512/1024KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

32-bit VESA local bus slot, keyboard controller/daughter card

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Keyboard controller/daughter card

C1

Turbo LED

JP16

LED front panel connector

CN1

Turbo switch

JP17

Speaker

J19

Reset switch

JP18

Power LED & keylock

J22

32-bit VESA Local bus slot

S1

USER CONFIGURABLE SETTINGS

Function

Jumper/Switch

Position

Factory configured - do not alter

J1

Closed

Factory configured - do not alter

JP9

pins 2 & 3 closed

Factory configured - do not alter

JP21

pins 2 & 3 closed

Factory configured - do not alter

JP23

Closed

Monitor type select color

JP24

Open

 

Monitor type select monochrome

JP24

Closed

CMOS memory normal operation

JP25

Open

 

CMOS memory clear

JP25

Closed

Factory configured - do not alter

JP31

Closed

Factory configured - do not alter

JP32

Closed

Factory configured - do not alter

JP33

Closed

Factory configured - do not alter

JP100

pins 2 & 3 closed

Factory configured - do not alter

JP101

Closed

Factory configured - do not alter

JP102

Closed

Factory configured - do not alter

JP103

Closed

Factory configured - do not alter

JP104

Closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

1MB

(4) 256K x 9

NONE

NONE

NONE

2MB

(4) 256K x 9

(4) 256K x 9

NONE

NONE

4MB

(4) 256K x 9

(4) 256K x 9

(4) 256K x 9

(4) 256K x 9

4MB

(4) 1M x 9

NONE

NONE

NONE

6MB

(4) 256K x 9

(4) 256K x 9

(4) 1M x 9

NONE

8MB

(4) 1M x 9

(4) 1M x 9

NONE

NONE

10MB

(4) 256K x 9

(4) 256K x 9

(4) 1M x 9

(4) 1M x 9

12MB

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

NONE

16MB

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

NONE

NONE

18MB

(4) 256K x 9

(4) 256K x 9

(4) 4M x 9

NONE

20MB

(4) 1M x 9

(4) 4M x 9

NONE

NONE

24MB

(4) 1M x 9

(4) 1M x 9

(4) 4M x 9

NONE

32MB

(4) 4M x 9

(4) 4M x 9

NONE

NONE

36MB

(4) 1M x 9

(4) 4M x 9

(4) 4M x 9

NONE

40MB

(4) 1M x 9

(4) 1M x 9

(4) 4M x 9

(4) 4M x 9

48MB

(4) 4M x 9

(4) 4M x 9

(4) 4M x 9

NONE

64MB

(4) 4M x 9

(4) 4M x 9

(4) 4M x 9

(4) 4M x 9

64MB

(4) 16M x 9

NONE

NONE

NONE

128MB

(4) 16M x 9

(4) 16M x 9

NONE

NONE

192MB

(4) 16M x 9

(4) 16M x 9

(4) 16M x 9

NONE

256MB

(4) 16M x 9

(4) 16M x 9

(4) 16M x 9

(4) 16M x 9

CACHE JUMPER CONFIGURATION

Size

JP1

JP3

JP4

JP12

JP13

256KB

pins 1 & 2

pins 1 & 2

pins 1 & 2

pins 1 & 2

pins 1 & 2

512KB

pins 2 & 3

pins 2 & 3

pins 1 & 2

pins 1 & 2

pins 2 & 3

1024KB

pins 2 & 3

pins 2 & 3

pins 2 & 3

pins 2 & 3

pins 2 & 3

Note:pins designated should be in the closed position.

CACHE CONFIGURATION

Size

Cache

Location

TAG

64KB

(8) 8K x 8

Banks 0 & 1

(2) 16K x 4

128KB

(4) 32K x 8

Bank 0

(2) 16K x 4

256KB

(8) 32K x 8

Banks 0 & 1

(2) 16K x 4

CPU TYPE CONFIGURATION

Type

JP15

JP5

JP7

80486SX

Open

Open

pins 1 & 2 closed

80487SX

Closed

pins 1 & 2 closed

pins 2 & 3 closed

80486DX

Closed

pins 2 & 3 closed

pins 2 & 3 closed