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





486SX/DX MOTHERBOARD

QUICKPATH SYSTEMS, INC.

486SX/DX MOTHERBOARD

Processor

80486SX/80487SX/80486DX/80486DX2

Processor Speed

16/20/25/33/50(internal)/50/66(internal)MHz

Chip Set

OPTI

Max. Onboard DRAM

32MB

Cache

64/256KB

BIOS

MR

Dimensions

330mm x 218mm

I/O Options

None

NPU Options

4167

CONNECTIONS

Purpose

Location

Purpose

Location

Power LED & keylock

KEY

Speaker

SPK

Turbo LED

LED

Turbo switch

TSW

Reset switch

RST

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Bus speed select ATCLK/4

JP2

Open

 

Bus speed select ATCLK/6

JP2

Closed

Password check enabled

JP6

Closed

 

Password check disabled

JP6

Open

CMOS memory normal operation

JP7

pins 2 & 3 closed

 

CMOS memory clear

JP7

pins 1 & 2 closed

Battery type select internal

JP13

pins 1 & 2 closed

 

Battery type select external

JP13

pins 2 & 3 closed

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

5MB

(4) 256K x 9

(4) 1M x 9

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

20MB

(4) 4M x 9

(4) 1M x 9

20MB

(4) 1M x 9

(4) 4M x 9

32MB

(4) 4M x 9

(4) 4M x 9

CACHE CONFIGURATION

Size

Bank 0

64KB

(9) 8K x 8

256KB

(9) 32K x 8

CACHE JUMPER CONFIGURATION

Size

JP9

JP10

JP11

JP12

64KB

Open

Open

Open

Open

256KB

Closed

Closed

Open

Closed

CPU CONFIGURATION

Type

OSC1

JP1

JP3

JP4

JP5

80486SX-16MHz

32MHz

2 & 3

2 & 3

Open

Open

80486SX-20MHz

40MHz

2 & 3

2 & 3

Open

Open

80486SX-25MHz

50MHz

2 & 3

2 & 3

Open

Open

80487SX-20MHz

40MHz

2 & 3

1 & 2

Closed

1 & 2

80486DX-25MHz

50MHz

2 & 3

1 & 2

Closed

2 & 3

80486DX-33MHz

66MHz

2 & 3

1 & 2

Closed

2 & 3

80486DX-50MHz

50MHz

1 & 2

1 & 2

Closed

2 & 3

80486DX2-50MHz

25MHz

2 & 3

1 & 2

Closed

2 & 3

80486DX2-66MHz

33MHz

2 & 3

1 & 2

Closed

2 & 3

Note:Pins designated should be in the closed position.