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SERIES 68 ENTERPRISE-III

AMERICAN MEGATRENDS, INC.

SERIES 68 ENTERPRISE-III

Processor

80486SX/80487SX/80486DX/ODP486SX/80486DX2

Processor Speed

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

Chip Set

AMI

Max. Onboard DRAM

256MB

Cache

256KB (factory configured)

BIOS

AMI

Dimensions

330mm x 307mm

I/O Options

32-bit VESA local bus slots (2), mouse port

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Turbo LED

D5

Reset switch

J9

Diagnostic LED

J1

Power LED & keylock

J10

Mouse

J3

Turbo switch

J14

Speaker

J8

32-bit VESA local bus slots

S1 & S2

USER CONFIGURABLE SETTINGS

Function

Jumper/Switch

Position

CMOS memory normal operation

J2

Open

 

CMOS memory clear

J2

Closed

CPU select low priority

J19

pins 1 & 2 closed

 

CPU select high priority

J19

pins 2 & 3 closed

Factory configured - do not alter

J20

Closed

Factory configured - do not alter

J21

Closed

Factory configured - do not alter

J24

Closed

VESA bus select ID3 normal operation <=33MHz

J30

pins 1 & 2 closed

 

VESA bus select remote ID3 > 33MHz

J30

pins 2 & 3 closed

Factory configured - do not alter

SW1/1

Off

Monitor type select monochrome

SW1/2

Off

 

Monitor type select color

SW1/2

On

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) 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

CPU TYPE CONFIGURATION

Type

Location

J7

80486SX

Primary

pins 2 & 3 closed

ODP486SX

Upgrade

pins 1 & 2, 3 & 4 closed

80487SX

Upgrade

pins 1 & 2, 3 & 4 closed

80486DX

Primary

pins 1 & 2, 3 & 4 closed

80486DX2

Primary

pins 1 & 2, 3 & 4 closed