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486LC1

SEANIX TECHNOLOGY, INC.

486LC1

Processor

80386DX/80486SX/80487SX/80486DX/80486DX2

Processor Speed

20/25/33/40/50(internal)/50/66(internal)MHz

Chip Set

Contaq

Max. Onboard DRAM

32MB

Cache

64/128/256KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

None

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Turbo LED

P1

Power LED & keylock

P4

Turbo switch

P2

Reset switch

P5

Speaker

P3

External battery

P7

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Ľ

Monitor type select color

JP22

Closed

 

Monitor type select monochrome

JP22

Open

Ľ

CMOS memory normal operation

JP23

pins 1 & 2 closed

 

CMOS memory clear

JP23

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) 1M x 9

(4) 256K x 9

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

17MB

(4) 4M x 9

(4) 256K 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

DIRTY (U1)

64KB

(4) 8K x 8

(4) 8K x 8

(1) 8K x 8

(1) 8K x 8

128KB

(4) 32K x 8

NONE

(1) 8K x 8

(1) 8K x 8

256KB

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

JP13

JP14

JP15

JP16

JP19

JP20

64KB

Open

Open

Open

Open

2 & 3

Open

128KB

Closed

Open

Closed

Open

1 & 2

2 & 3

256KB

Closed

Closed

Closed

Closed

2 & 3

1 & 2

Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION

Type

JP1

JP2

JP3

JP4

JP5

JP6

JP7

80386DX

Open

Open

Open

Open

Open

Open

Open

CX486DLC

Closed

Closed

Closed

Open

Open

Open

Open

80486SX

Open

Open

Open

Open

Open

2 & 3

1 & 2

80487SX

Open

Open

Open

Closed

Closed

2 & 3

1 & 2

80486DX

Open

Open

Open

Open

Closed

2 & 3

2 & 3

80486DX2

Open

Open

Open

Open

Closed

2 & 3

2 & 3

Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION (CONíT)

Type

JP8

JP9

JP10

JP17

JP18

JP21

JP24

80386DX

Closed

Open

Open

2 & 3

2 & 3

2 & 3

1 & 2

CX486DLC

Closed

Open

Open

2 & 3

2 & 3

2 & 3

N/A

80486SX

Open

1 & 2

Closed

1 & 2

1 & 2

1 & 2

2 & 3

80487SX

Open

1 & 2

Closed

1 & 2

1 & 2

1 & 2

2 & 3

80486DX

Open

1 & 2

Closed

1 & 2

1 & 2

1 & 2

2 & 3

80486DX2

Open

1 & 2

Closed

1 & 2

1 & 2

1 & 2

2 & 3

Note: Pins designated should be in the closed position. JP24 may not be present on all boards. The location is unidentified.

80386 ATCLK CONFIGURATION

ATCLK

JP11

JP12

4

Closed

Closed

6

Closed

Open

8

Open

Closed

10

Open

Open

80486 ATCLK CONFIGURATION

ATCLK

JP11

JP12

3

Closed

Open

4

Open

Closed

5

Open

Open

6

Closed

Closed