ADVANCED LOGIC RESEARCH, INC.

MULTIMEDIA EXPRESS

Processor

80486SX/80486DX/80486DX2/Pentium Overdrive

Processor Speed

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

Chip Set

ALR

Max. Onboard DRAM

36MB

Cache

64/128/256KB

BIOS

Phoenix

Dimensions

330mm x 218mm

I/O Options

32-bit VESA local bus slots (1), floppy drive interface, IDE interface, parallel port, PS/2 mouse port,serial ports (2), VGA port

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

PS/2 mouse port

CN1

VGA port

CN5

Serial port 1

CN2

IDE interface

CN6

Serial port 2

CN3

Floppy drive interface

CN7

Parallel port

CN4

32-bit VESA local bus slot

SL1

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

Password check disabled

J2

pins 2 & 3 closed

 

Password check enabled

J2

pins 1 & 2 closed

»

On board battery enabled

J13

Closed

 

On board battery disabled

J13

Open

»

DRAM parity enabled

J14

Open

 

DRAM parity disabled

J14

Closed

»

On board VGA enabled

J20

pins 1 & 2 closed

 

On board VGA disabled

J20

pins 2 & 3 closed

»

Keylock enabled

J27

pins 2 & 3 closed

 

Keylock disabled

J27

pins 1 & 2 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

4MB

(8) 512K x 8

NONE

NONE

8MB

(8) 512K x 8

(1) 1M x 36

NONE

12MB

(8) 512K x 8

(1) 1M x 36

(1) 1M x 36

12MB

(8) 512K x 8

(1) 2M x 36

NONE

16MB

(8) 512K x 8

(1) 1M x 36

(1) 2M x 36

20MB

(8) 512K x 8

(1) 4M x 36

NONE

20MB

(8) 512K x 8

(1) 2M x 36

(1) 2M x 36

24MB

(8) 512K x 8

(1) 1M x 36

(1) 4M x 36

36MB

(8) 512K x 8

(1) 4M x 36

(1) 4M x 36

Note: Bank 0 is factory installed and is not configurable.

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) 32K x 8

CACHE JUMPER CONFIGURATION

Size

J5

J6

J23

J24

64KB

pins 2 & 3 closed

pins 2 & 3 closed

Open

pins 1 & 2 closed

128KB

pins 1 & 2 closed

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

256KB

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

pins 2 & 3 closed

CPU TYPE CONFIGURATION

Type

J9

J10

J11

80486SX (PQFP)

Open

Closed

Open

80486 (PGA)

Open

Open

Open

80486DX

Closed

Closed

Open

80486DX2

Closed

Closed

Open

Pentium Overdrive

Open

Closed

Closed

CPU SPEED CONFIGURATION

Speed

J17

25MHz

pins 4 & 8 closed

33MHz

pins 3 & 6 closed

50iMHz

pins 4 & 8 closed

66iMHz

pins 3 & 6 closed

CPU CLOCK CONFIGURATION

Gate delay

J15

1 gate delay

pins 1 & 2 closed

0 gate delays

pins 2 & 3 closed

VESA CLOCK CONFIGURATION

Gate delay

J16

1 gate delay

pins 1 & 2 closed

0 gate delays

pins 2 & 3 closed