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Processor

80386DX/CX486DLC/80486SX/80487SX/ODP486DX/80486DX/80486DX2/ODP586SX

Processor Speed

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

Chip Set

OPTI

Max. Onboard DRAM

64MB

Cache

64/128/256KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

32-bit VESA slots (2)

NPU Options

80387DX

CONNECTIONS

Purpose

Location

Purpose

Location

Diagnostic LCD port

J1

Reset switches

J6 & J8

Keyboard connector

J2

Turbo Switch

J7

Speaker

J3

PS/2 mouse connector

J9

Power LED & keylock

J4

External Battery

J10

Turbo LED

J5

32-bit VESA slots (2)

S1 & S2

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

�

CMOS memory normal operation (Internal Battery)

J11

pins 1 & 2 closed

CMOS memory normal operation (External Battery)

J11

Open

CMOS memory clear

J11

pins 2 & 3 closed

�

Factory configured - do not alter

JP10

Open

�

Factory configured - do not alter

JP11

Closed

�

Monitor type select color

JP29

Closed

Monitor type select monochrome

JP29

Open

�

BIOS ROM type select 2764

JP32

Open

�

BIOS ROM type select 27128 or Flash RAM 28f010

JP32

pins 1 & 2 closed

�

BIOS ROM type select Flash RAM 28f001

JP32

pins 2 & 3 closed

�

Factory configured - do not alter

JP33

Closed

Note:The location of JP10, JP28 and JP33 are unknown.

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

1MB

256K x 36

NONE

NONE

NONE

2MB

256K x 36

256K x 36

NONE

NONE

2MB

512K x 36

NONE

NONE

NONE

3MB

256K x 36

256K x 36

256K x 36

NONE

4MB

256K x 36

256K x 36

256K x 36

256K x 36

4MB

512K x 36

512K x 36

NONE

NONE

4MB

1M x 36

NONE

NONE

NONE

6MB

512K x 36

512K x 36

512K x 36

NONE

8MB

512K x 36

512K x 36

512K x 36

512K x 36

8MB

1M x 36

1M x 36

NONE

NONE

8MB

2M x 36

NONE

NONE

NONE

9MB

2M x 36

256K x 36

NONE

NONE

10MB

2M x 36

256K x 36

256K x 36

NONE

10MB

2M x 36

512K x 36

NONE

NONE

11MB

2M x 36

256K x 36

256K x 36

256K x 36

12MB

2M x 36

512K x 36

512K x 36

NONE

12MB

2M x 36

1M x 36

NONE

NONE

12MB

1M x 36

1M x 36

NONE

NONE

14MB

2M x 36

512K x 36

512K x 36

512K x 36

16MB

2M x 36

1M x 36

1M x 36

NONE

16MB

2M x 36

2M x 36

NONE

NONE

16MB

1M x 36

1M x 36

1M x 36

1M x 36

16MB

4M x 36

NONE

NONE

NONE

20MB

2M x 36

2M x 36

1M x 36

NONE

20MB

4M x 36

1M x 36

NONE

NONE

24MB

2M x 36

2M x 36

1M x 36

1M x 36

24MB

4M x 36

1M x 36

1M x 36

NONE

24MB

4M x 36

2M x 36

NONE

NONE

24MB

2M x 36

2M x 36

2M x 36

NONE

DRAM CONFIGURATION (CONTINUED)

Size

Bank 0

Bank 1

Bank 2

Bank 3

28MB

4M x 36

1M x 36

1M x 36

1M x 36

32MB

2M x 36

2M x 36

2M x 36

2M x 36

32MB

4M x 36

4M x 36

NONE

NONE

32MB

8M x 36

NONE

NONE

NONE

32MB

4M x 36

2M x 36

2M x 36

NONE

36MB

4M x 36

4M x 36

1M x 36

NONE

36MB

8M x 36

1M x 36

NONE

NONE

40MB

4M x 36

2M x 36

2M x 36

2M x 36

40MB

4M x 36

4M x 36

1M x 36

1M x 36

40MB

4M x 36

4M x 36

2M x 36

NONE

40MB

8M x 36

1M x 36

1M x 36

NONE

40MB

8M x 36

2M x 36

NONE

NONE

44MB

8M x 36

1M x 36

1M x 36

1M x 36

48MB

4M x 36

4M x 36

2M x 36

2M x 36

48MB

8M x 36

2M x 36

2M x 36

NONE

48MB

4M x 36

4M x 36

4M x 36

NONE

48MB

8M x 36

4M x 36

NONE

NONE

56MB

8M x 36

2M x 36

2M x 36

2M x 36

64MB

4M x 36

4M x 36

4M x 36

4M x 36

64MB

8M x 36

8M x 36

NONE

NONE

64MB

8M x 36

4M x 36

4M x 36

NONE

64MB

16M x 36

NONE

NONE

NONE

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

64KB

(4) 8K x 8

(4) 8K x 8

8K x 8

128KB

(4) 32K x 8

NONE

8K x 8

256KB

(4) 32K x 8

(4) 32K x 8

16K x 8/32K x 8

CACHE JUMPER CONFIGURATION

Size

JP6

JP7

JP8

JP9

64KB

Open

Open

pins 2 & 3 closed

pins 2 & 3 closed

128KB

Closed

Open

pins 1 & 2 closed

pins 1 & 2 closed

256KB

Closed

Closed

pins 2 & 3 closed

pins 2 & 3 closed

VESA CPU TYPE CONFIGURATION

CPU Type

JP15

JP16

JP21

JP22

80386

pins 2 & 3 closed

Open

Open

Closed

80486

pins 1 & 2 closed

Closed

Closed

Open

VESA WAIT STATE/BUS SPEED (ID2 & ID3) CONFIGURATION

CPU speed

Wait states

JP24 (ID3)

JP23 (ID2)

<=33MHz

0 wait states

Closed

Closed

>33MHz

1 wait state

Open

Open

VESA BUS READY SIGNAL CONFIGURATION

Signal

JP18

JP34

�

Delay 1 PCLK

pins 1 & 2 closed

pins 1 & 2, 3 & 4 closed

No Delay

pins 2 & 3 closed

pins 2 & 3 closed

CPU TYPE CONFIGURATION

Type

JP1

JP2

JP3

JP17

JP19

JP27

80386DX

N/A

N/A

N/A

N/A

Open

pins 1 & 2

CX486DLC

N/A

N/A

N/A

N/A

Open

pins 1 & 2

486SX/PGA

pins 2 & 3

Open

pins 1 & 2

pins 1 & 2

Closed

pins 2 & 3

486SX/PQFP

1 & 2, 3 & 4

pins 1 & 2

pins 2 & 3

pins 2 & 3

Closed

pins 2 & 3

80487SX

1 & 2, 3 & 4

pins 1 & 2

pins 2 & 3

pins 2 & 3

Closed

pins 2 & 3

80486DX

1 & 2, 3 & 4

pins 2 & 3

pins 1 & 2

pins 1 & 2

Closed

pins 2 & 3

80486DX2

1 & 2, 3 & 4

pins 2 & 3

pins 1 & 2

pins 1 & 2

Closed

pins 2 & 3

ODP586SX

1 & 2, 3 & 4

pins 1 & 2

pins 2 & 3

pins 1 & 2

Closed

pins 2 & 3

Note:Pins designated should be in the closed position.

CPU SPEED CONFIGURATION

Speed

JP12

JP13

JP14

JP25

JP26

JP31

386DX/25

Open

Open

Closed

pins 2 & 3

pins 2 & 3

pins 1 & 2

386DX/33

Closed

Open

Closed

pins 2 & 3

pins 2 & 3

pins 1 & 2

386DX/40

Open

Closed

Closed

pins 2 & 3

pins 2 & 3

pins 1 & 2

486DLC/25

Open

Open

Closed

pins 2 & 3

pins 2 & 3

pins 1 & 2

486DLC/33

Closed

Open

Closed

pins 2 & 3

pins 2 & 3

pins 1 & 2

486DLC/40

Open

Closed

Closed

pins 2 & 3

pins 2 & 3

pins 1 & 2

486SX/DX25

Open

Open

Closed

pins 2 & 3

pins 1 & 2

pins 1 & 2

486SX/DX33

Closed

Open

Closed

pins 2 & 3

pins 1 & 2

pins 1 & 2

486DX/40

Closed

Closed

Open

pins 1 & 2

pins 1 & 2

pins 1 & 2

486DX/50

Open

Open

Closed

pins 1 & 2

pins 1 & 2

pins 1 & 2

80486DX2/50i

Open

Open

Closed

pins 2 & 3

pins 1 & 2

pins 1 & 2

80486DX2/66i

Closed

Open

Closed

pins 2 & 3

pins 1 & 2

pins 1 & 2

Note:Pins designated should be in the closed position.