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SUPERBOARD 486

ORCHID TECHNOLOGY

SUPERBOARD 486

Processor

80486SX/80487SX/80486DX

Processor Speed

20/25/33/50MHz

Chip Set

OPTI

Max. Onboard DRAM

32MB

Cache

64/256KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

32-bit external video card

NPU Options

4167

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

J10

32-bit external video card

S1

Power LED & keylock

J23

Reset switch

SW1

Speaker

J24

Turbo switch

SW2

Turbo LED

JP12

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Factory configured - do not alter

JP1

Open

CMOS memory normal operation

JP2

pins 2 & 3 closed

 

CMOS memory clear

JP2

pins 1 & 2 closed

CPU speed select 20/25/33MHz

JP4

pins 2 & 3 closed

 

CPU speed select 50MHz

JP4

pins 1 & 2 closed

Factory configured - do not alter

JPX

N/A

Factory configured - do not alter

JPY

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 (U33)

TAG (U34)

64KB

(8) 8K x 8

(1) 64K x 1

(1) 8K x 8

256KB

(8) 32K x 8

(1) 64K x 1

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

J8

J9

J10

J11

64KB

Open

Open

Open

Open

256KB

Closed

Closed

Open

Closed

CPU JUMPER CONFIGURATION

CPU

JP5

JP6

JP7

80486SX

Open

pins 2 & 3 closed

Open

80487SX

pins 1 & 2 closed

pins 1 & 2 closed

Closed

80486DX

pins 2 & 3 closed

pins 1 & 2 closed

Closed