...because we can't all be on the bleeding edge...





SERIES 64 BABY EISA

AMERICAN MEGATRENDS, INC.

SERIES 64 BABY EISA

Processor

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

Processor Speed

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

Chip Set

OPTI

Max. Onboard DRAM

128MB

Cache

64/256KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

Mouse port

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Mouse

J2

Power LED & keylock

J30

Speaker

J22

Reset switch

J31

USER CONFIGURABLE SETTINGS

Function

Jumper/Switch

Position

CPU speed select iOSC/2

J3

pins 1 & 2 closed

 

CPU speed select iOSC/1

J3

pins 2 & 3 closed

Channel ready signal select IOCHRDY (ISA only)

J29

Open

 

Channel ready signal select EXRDY (EISA only)

J29

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

4MB

(4) 1M x 9

NONE

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

20MB

(4) 1M x 9

(4) 4M x 9

32MB

(4) 4M x 9

(4) 4M x 9

64MB

(4) 16M x 9

NONE

128MB

(4) 16M x 9

(4) 16M x 9

CACHE JUMPER CONFIGURATION

Size

J14

J15

J18

J19

J28

64KB

Open

Open

Open

Open

2 & 3

256KB

1 & 2

1 & 2

1 & 2

1 & 2

1 & 2

Note:Pins designated should be in the closed position.

CPU TYPE CONFIGURATION

Type

Location

J9

80486SX

Primary

pins 2 & 3 closed

OPD486SX

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

CPU SPEED CONFIGURATION

Speed

J6

J16

J17

J27

20MHz

Closed

Open

Open

pins 2 & 3 closed

25MHz

Open

Open

Open

pins 1 & 2 closed

33MHz

Open

Open

Closed

pins 1 & 2 closed

50iMHz

Open

Open

Open

pins 1 & 2 closed

50MHz

Open

Closed

Closed

pins 1 & 2 closed

66iMHz

Open

Open

Closed

pins 1 & 2 closed