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NORTHGATE SUPERB CLT486VL2

NORTHGATE COMPUTER SYSTEMS, INC.

NORTHGATE SUPERB CLT486VL2

Processor

80486SX/80487SX/80486DX/80486DX2/Pentium Overdrive

Processor Speed

25/33/40/50(internal)/50/66(internal)MHz

Chip Set

Unidentified

Max. Onboard DRAM

32MB

Cache

64/128/256KB

BIOS

AMI

Dimensions

254mm x 220mm

I/O Options

32-bit VESA local bus slots (2)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Turbo LED

JP10

External battery

JP17

Speaker

JP11

Turbo switch

JP95

Power LED & keylock

JP13

32-bit VESA local bus slots

SL1 & SL2

Reset switch

JP15

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

PQFP CPU disabled

JP1

Closed

 

PQFP CPU enabled

JP1

Open

»

Monitor type select monochrome

JP12

Open

 

Monitor type select color

JP12

Closed

»

CMOS memory normal operation

JP16

pins 1 & 2 closed

 

CMOS memory clear

JP16

pins 2 & 3 closed

Note: The location of JP1 is unidentified. If board does not have PQFP CPU, JP1 will not be present.

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

5MB

(4) 1M x 9

(4) 256K x 9

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

17MB

(4) 256K x 9

(4) 4M x 9

17MB

(4) 4M x 9

(4) 256K x 9

20MB

(4) 1M x 9

(4) 4M x 9

20MB

(4) 4M x 9

(4) 1M x 9

32MB

(4) 4M x 9

(4) 4M x 9

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

64KB

(4) 8K x 8

(4) 8K x 8

(1) 8K x 8

128KB

(4) 32K x 8

NONE

(1) 8K x 8

256KB

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

JP7

JP8

64KB

pins 2 & 3 closed

pins 2 & 4 closed

128KB

pins 1 & 2 closed

pins 2 & 3 closed

256KB

pins 1 & 2 closed

pins 1 & 2 closed

CPU SPEED/TYPE CONFIGURATION

Type

JP2

JP3

JP4

JP33

JP72

80486SX-25 (PQFP)

Open

Open

Open

2 & 3

Closed

80486SX-25 (PGA)

2 & 3

Open

Open

2 & 3

Closed

80486SX-33 (PQFP)

Open

Open

Open

2 & 3

Open

80487SX-25

1 & 2, 3 & 4

1 & 2

Closed

2 & 3

Closed

80486DX-33

1 & 2, 3 & 4

2 & 3

Open

2 & 3

Open

80486DX-50

1 & 2, 3 & 4

2 & 3

Open

1 & 2

Open

Note: Pins designated should be in the closed position.

CPU SPEED/TYPE CONFIGURATION (CON’T)

Type

JP2

JP3

JP4

JP33

JP72

80486DX2-50

1 & 2, 3 & 4

2 & 3

Open

2 & 3

Closed

80486DX2-66

1 & 2, 3 & 4

2 & 3

Open

2 & 3

Open

Pentium Overdrive

1 & 2, 3 & 4

1 & 2

Closed

2 & 3

Closed

Note: Pins designated should be in the closed position.

VESA WAIT STATE CONFIGURATION

Wait states

ID2

0 wait states

Open

1 wait state

Closed

BUS SPEED CONFIGURATION

CPU speed

ID3

<= 33MHz

Open

> 33MHz

Closed