AMERICAN MEGATRENDS, INC.

SUPER VOYAGER VLB-II (VER. 2)

Processor

80486SX/80487SX/80486DX/P23T/Pentium Overdrive

Processor Speed

20/25/33/50(internal)/50/66(internal)MHz

Chip Set

AMI

Max. Onboard DRAM

64MB

Cache

64/256KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

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

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

PS/2 mouse interface

J1

Reset switch

J24

Parallel port

J4

Speaker

J29

Floppy drive interface

J6

Turbo LED

J30

IDE interface

J7

Power LED & keylock

J32

IDE interface LED

J8

Turbo switch

J33

Serial port 2

J9

32-bit VESA local bus slots

SL1 & SL2

Serial port 1

J10

   

USER CONFIGURABLE SETTINGS

Function

Jumper/Switch

Position

»

Parallel port IRQ select IRQ5

J13

pins 1 & 2 closed

 

Parallel port IRQ select IRQ7

J13

pins 2 & 3 closed

»

Factory configured - do not alter

J14

N/A

»

Factory configured - do not alter

J18

N/A

»

Factory configured - do not alter

J19

N/A

»

Serial port 2 IRQ select IRQ3

J20

pins 1 & 2 closed

 

Serial port 2 IRQ select IRQ4

J20

pins 2 & 3 closed

»

Serial port 1 IRQ select IRQ4

J21

pins 2 & 3 closed

 

Serial port 1 IRQ select IRQ3

J21

pins 1 & 2 closed

»

PS/2 mouse enabled

J22

pins 1 & 2 closed

 

PS/2 mouse disabled

J22

pins 2 & 3 closed

»

Factory configured - do not alter

J40

N/A

»

Factory configured - do not alter

SW2/1

Off

»

Monitor type select monochrome

SW2/2

Off

 

Monitor type select color

SW2/2

On

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

4MB

(1) 1M x 36

NONE

NONE

NONE

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

20MB

(1) 1M x 36

(1) 4M x 36

NONE

NONE

24MB

(1) 1M x 36

(1) 1M x 36

(1) 4M x 36

NONE

32MB

(1) 4M x 36

(1) 4M x 36

NONE

NONE

36MB

(1) 1M x 36

(1) 4M x 36

(1) 4M x 36

NONE

40MB

(1) 1M x 36

(1) 1M x 36

(1) 4M x 36

(1) 4M 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

64KB

(4) 8K x 8

(4) 8K x 8

256KB

(4) 32K x 8

(4) 32K x 8

CACHE SWITCH CONFIGURATION

Size

SW1/1

SW1/2

SW1/3

SW1/4

64KB

Off

Off

Off

Off

256KB

On

On

On

On

CPU TYPE CONFIGURATION

PQFP type

PGA type

J43

J44

J45

None

80486SX

2 & 3

N/A

N/A

None

80487SX

1 & 2, 3 & 4

2 & 3

N/A

None

80486DX

1 & 2, 3 & 4

1 & 2

N/A

None

80486DX2

1 & 2, 3 & 4

1 & 2

N/A

None

P23T

1 & 2, 3 & 4

2 & 3

N/A

None

Pentium Overdrive

1 & 2, 3 & 4

2 & 3

N/A

80486SX

None

N/A

N/A

Open

80486SX

80486SX

2 & 3

N/A

Closed

80486SX

80487SX

1 & 2, 3 & 4

2 & 3

Closed

80486SX

80486DX

1 & 2, 3 & 4

1 & 2

Closed

80486SX

P23T

1 & 2, 3 & 4

2 & 3

Closed

80486SX

Pentium Overdrive

1 & 2, 3 & 4

2 & 3

Closed

80486DX

None

N/A

N/A

Open

80486DX

80487SX

1 & 2, 3 & 4

2 & 3

Closed

80486DX

80486DX2

1 & 2, 3 & 4

1 & 2

Closed

80486DX

P23T

1 & 2, 3 & 4

2 & 3

Closed

80486DX

Pentium Overdrive

1 & 2, 3 & 4

2 & 3

Closed

Note: Pins designated should be in the closed position.

BUS SPEED CONFIGURATION

CPU speed

J23

<= 33MHz

pins 1 & 2 closed

> 33MHz

pins 2 & 3 closed