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ENTERPRISE-II SERIES 16

AMERICAN MEGATRENDS, INC.

ENTERPRISE-II SERIES 16

Device Type

Mainboard

Processor

80486SX/80487SX/80486DX

Processor Speed

25/33/50MHz

Chip Set

Intel

Video Chip Set

None

Maximum Onboard Memory

96MB

Maximum Video Memory

None

Cache

128KB

BIOS

AMI

Dimensions

355mm x 304mm

I/O Options

External memory card, floppy drive interface, PS/2 mouse port

NPU Options

4167

CONNECTIONS

Purpose

Location

Purpose

Location

AMI module connector

J5

Turbo switch

J18

PS/2 mouse port

J6

Turbo LED

J19

Floppy drive interface

J8

Power connector

PS1

AMI module connector

J9

Power connector

PS2

Speaker

J13

Power connector

PS3

Power LED & keylock

J14

External memory card

SL1

Reset switch

J17

   

USER CONFIGURABLE SETTINGS

Function

Label

Position

Floppy drive select XT/AT

J12

Pins 1 & 2 closed

 

Floppy drive select PS/2

J12

Pins 2 & 3 closed

Factory configured - do not alter

J22

Closed

Factory configured - do not alter

SW1/1

Off

Monitor type select monochrome

SW1/2

Off

 

Monitor type select color

SW1/2

On

SIMM CONFIGURATION (MAINBOARD)

Size

Bank 0

Bank 1

4MB

(4) 1M x 9

None

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

None

32MB

(4) 4M x 9

(4) 4M x 9

SIMM CONFIGURATION (EXTERNAL MEMORY CARD)

Size

Bank 2

Bank 3

Bank 4

Bank 5

4MB

(4) 1M x 9

None

None

None

8MB

(4) 1M x 9

(4) 1M x 9

None

None

8MB

(4) 1M x 9

None

(4) 1M x 9

None

16MB

(4) 4M x 9

None

None

None

16MB

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

32MB

(4) 4M x 9

(4) 4M x 9

None

None

32MB

(4) 4M x 9

None

(4) 4M x 9

None

64MB

(4) 4M x 9

(4) 4M x 9

(4) 4M x 9

(4) 4M x 9

Note: To install maximum memory of 96MB, fully populate mainboard with 32MB & install memory card with 64MB installed.

CACHE CONFIGURATION

Size

Bank 0

128KB

(4) 32K x 8

CPU SPEED SELECTION

Speed

J2

J27

J35

25MHz

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 2 & 3 closed

33MHz

Pins 1 & 2 closed

Open

Pins 2 & 3 closed

50MHz

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

Note: If CPU is revision, B6 or earlier, leave J2 open.

CPU TYPE SELECTION

Type

J36

J37

80486SX

Pins 2 & 3 closed

Open

80487SX

Pins 1 & 2, 3 & 4 closed

Pins 2 & 3 closed

80486DX

Pins 1 & 2, 3 & 4 closed

Pins 1 & 2 closed

P24

Pins 1 & 2, 3 & 4 closed

Pins 1 & 2 closed