ICL

VALUEPLUS MD-SERIES

Processor

80486SX/80487SX/80486DX/80486DX2

Processor Speed

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

Chip Set

VIA

Max. Onboard DRAM

64MB

Cache

64/128/256KB

BIOS

AMI/Award

Dimensions

330mm x 218mm

I/O Options

Parallel port, serial port, VGA port, PS/2 mouse port, VGA feature connector, 32-bit VESA local bus slots (2), floppy drive interface, IDE interface

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Serial port 1

CN1

PS/2 mouse port

CN9

Floppy drive interface

CN2

Chassis fan power

J1

IDE interface

CN3

Turbo LED

J2

Parallel port

CN4

IDE interface LED

J3

VGA feature connector

CN5

Power LED & keylock

J4

PS/2 mouse connector

CN6

Reset switch

J5

VGA port

CN8

32-bit VESA local bus slots

SL1 & SL2

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

VGA IRQ9 disabled

J9

Open

 

VGA IRQ9 enabled

J9

Closed

»

On board VGA enabled

J10

pins 1 & 2 closed

 

On board VGA disabled

J10

pins 2 & 3 closed

»

Factory configured - do not alter

J11

Open

»

Factory configured - do not alter

JC7

pins 2 & 3 closed

»

Factory configured - do not alter

JK1

pins 1 & 2 closed

»

Factory configured - do not alter

JK2

pins 1 & 2 closed

»

Factory configured - do not alter

JP1

pins 1 & 2 closed

Note: The location of J9 is unidentified.

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

1MB

(1) 256K x 36

NONE

NONE

NONE

2MB

(1) 256K x 36

(1) 256K x 36

NONE

NONE

3MB

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

NONE

4MB

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

4MB

(1) 1M x 36

NONE

NONE

NONE

5MB

(1) 1M x 36

(1) 256K x 36

NONE

NONE

6MB

(1) 1M x 36

(1) 256K x 36

(1) 256K x 36

NONE

7MB

(1) 1M x 36

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

8MB

(1) 1M x 36

(1) 1M x 36

NONE

NONE

12MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

NONE

16MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

16MB

(1) 4M x 36

NONE

NONE

NONE

17MB

(1) 4M x 36

(1) 256K x 36

NONE

NONE

18MB

(1) 4M x 36

(1) 256K x 36

(1) 256K x 36

NONE

19MB

(1) 4M x 36

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

20MB

(1) 4M x 36

(1) 1M x 36

NONE

NONE

21MB

(1) 4M x 36

(1) 1M x 36

(1) 256K x 36

NONE

22MB

(1) 4M x 36

(1) 1M x 36

(1) 256K x 36

(1) 256K x 36

24MB

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

NONE

28MB

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

32MB

(1) 4M x 36

(1) 4M x 36

NONE

NONE

33MB

(1) 4M x 36

(1) 4M x 36

(1) 256K x 36

NONE

34MB

(1) 4M x 36

(1) 4M x 36

(1) 256K x 36

(1) 256K x 36

36MB

(1) 4M x 36

(1) 4M x 36

(1) 1M x 36

NONE

40MB

(1) 4M x 36

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

48MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

NONE

64MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

64KB

(4) 8K x 8

(4) 8K x 8

(2) 8K x 8

128KB

(4) 32K x 8

NONE

(2) 8K x 8

256KB

(4) 32K x 8

(4) 32K x 8

(2) 32K x 8

CACHE JUMPER CONFIGURATION

Size

JS1

JS2

JS3

64KB

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

128KB

pins 2 & 3 closed

pins 1 & 2 closed

pins 1 & 2 closed

256KB

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

CPU TYPE CONFIGURATION

Type

JC1

JC2

JC3

JK5

80486SX-25

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

pins 3 & 4 closed

80487SX-25

pins 1 & 2 closed

pins 1 & 2 closed

pins 2 & 3 closed

pins 3 & 4 closed

80486DX-25

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

pins 3 & 4 closed

80486DX-33

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2, 7 & 8 closed

80486DX2-50

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

pins 3 & 4 closed

80486DX2-66

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2, 7 & 8 closed

VRAM CONFIGURATION

Size

Bank 0

Bank 1

1MB

(1) 256K x 16

NONE

2MB

(1) 256K x 16

(1) 256K x 16