ORCHID TECHNOLOGY

SUPERBOARD 486(DX2)

Processor

80486SX/80486DX/ODP486SX/80486DX2

Processor Speed

20/25/40/50(internal)/66(internal)MHz

Chip Set

OPTI

Max. Onboard DRAM

32MB

Cache

64/256KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

32-bit proprietary video card slot

NPU Options

4167

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

J10

32-bit proprietary video card

S1

Power LED & keylock

J23

Reset switch

SW1

Speaker

J24

Turbo switch

SW2

Turbo LED

JP12

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

Monitor type select color

JP1

Open

 

Monitor type select monochrome

JP1

Closed

»

CMOS memory normal operation

JP2

pins 2 & 3 closed

 

CMOS memory clear

JP2

pins 1 & 2 closed

»

Factory configured - do not alter

JPX

N/A

»

Factory configured - do not alter

JPY

N/A

»

Factory configured - do not alter

JP13

N/A

DRAM CONFIGURATION

Size

Bank 0

Bank 1

1MB

(4) 256K x 9

NONE

2MB

(4) 256K x 9

(4) 256K x 9

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

CACHE CONFIGURATION

Size

Bank 0

TAG (U34)

TAG (U33)

64KB

(8) 8K x 8

(1) 8K x 8

(1) 64K x 1

256KB

(8) 32K x 8

(1) 32K x 8

(1) 64K x 1

CACHE JUMPER CONFIGURATION

Size

JP8

JP9

JP10

JP11

64KB

Open

Open

Open

Open

256KB

Closed

Closed

Open

Closed

CPU TYPE CONFIGURATION

Type

OSC

JP4

JP5

JP6

JP7

80486SX-20

20MHz

1 & 2

Open

2 & 3

Open

80486SX-20

40MHz

2 & 3

Open

2 & 3

Open

ODP486SX-50

25MHz

1 & 2

Open

2 & 3

Open

ODP486SX-50

50MHz

2 & 3

Open

2 & 3

Open

80486DX-25

25MHz

1 & 2

2 & 3

1 & 2

Closed

80486DX2-50

50iMHz

2 & 3

2 & 3

1 & 2

Closed

80486DX-33

66MHz

2 & 3

2 & 3

1 & 2

Closed

80486DX2-50

50iMHz

2 & 3

2 & 3

1 & 2

Closed

80486DX2-66

66MHz

2 & 3

2 & 3

1 & 2

Closed

Note: Pins designated should be in the closed position.