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





486EO-50/33/25/20 EISA

ADVANCED INTEGRATION RESEARCH, INC.

486EO-50/33/25/20 EISA

Processor

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

Processor Speed

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

Chip Set

OPTI

Max. Onboard DRAM

128MB

Cache

64/128/256/512KB

BIOS

AMI/Phoenix

Dimensions

309mm x 331mm

I/O Options

32-bit external memory card slot, 32-bit external video card slot

NPU Options

4167

CONNECTIONS

Purpose

Location

Purpose

Location

Speaker

J4

Turbo LED

J8

Power LED & Keylock

J5

32-bit external memory card

S1

Reset switch

J6

32-bit external video card

VP1

Turbo switch

J7

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Factory configured - do not alter

JO3

Open

Factory configured - do not alter

JO4

Open

Monitor type select monochrome

JP6

Open

 

Monitor type select color

JP6

Closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

4MB

(4) 1M x 9

NONE

NONE

NONE

8MB

(4) 1M x 9

(4) 1M x 9

NONE

NONE

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

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

28MB

(4) 1M x 9

(4) 1M x 9

(4) 4M x 9

(4) 1M x 9

32MB

(4) 4M x 9

(4) 4M x 9

NONE

NONE

36MB

(4) 4M x 9

(4) 4M x 9

(4) 1M 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

52MB

(4) 4M x 9

(4) 4M x 9

(4) 4M x 9

(4) 1M x 9

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

Note:Banks 2 & 3 are used when a 32-bit external memory card is installed at S1.

CACHE CONFIGURATION

Size

Bank 0

Bank 1

64KB

(4) 8K x 8

(4) 8K x 8

128KB

(4) 32K x 8

NONE

256KB

(4) 32K x 8

(4) 32K x 8

512KB

(4) 128K x 8

NONE

CACHE JUMPER CONFIGURATION

Size

JP1

JP2

JP3

JP9

JP10

JP11

JP12

64K

Open

Open

Open

Open

Open

Open

2 & 3

128K

Closed

Open

Open

Closed

Open

Open

1 & 2

256K

Closed

Closed

Open

Closed

Open

Closed

2 & 3

512K

Closed

Closed

Closed

Closed

Closed

Closed

1 & 2

Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION

Type

JP7

JP8

80486SX

pins 2 & 3 closed

open

80487SX

pins 1 & 2 and 3 & 4 closed

pins 1 & 2 closed

80486DX

pins 1 & 2 and 3 & 4 closed

pins 2 & 3 closed

ODP486SX

pins 1 & 2 and 3 & 4 closed

pins 1 & 2 closed

80486DX2

pins 1 & 2 and 3 & 4 closed

pins 2 & 3 closed

CPU SPEED CONFIGURATION

Speed

JO1

JO2

JP4

JP5

JP13

JP14

JP15

20MHz

Open

Closed

Open

Open

2 & 3

Closed

2 & 3

25MHz

Open

Open

Open

Open

2 & 3

Closed

1 & 2

33MHz

Open

Closed

Open

Closed

2 & 3

Open

1 & 2

50iMHz

Open

Open

Open

Open

2 & 3

Closed

1 & 2

50MHz

Open

Open

Closed

Closed

1 & 2

Open

1 & 2

66iMHz

Open

Closed

Open

Closed

2 & 3

Open

1 & 2