UNIDENTIFIED

80486L-ISA

Processor

80486SX/80487SX/80486DX/ODP486SX/80486DX2

Processor Speed

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

Chip Set

SIS

Max. Onboard DRAM

32MB

Cache

64/128/256KB

BIOS

AMI/Award

Dimensions

254mm x 218mm

I/O Options

32-bit local bus card slot

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

32-bit local bus card

CN1

Reset switch

JP13

External battery

JP1

Power LED & keylock

JP14

Speaker

JP11

Turbo LED

JP15

Turbo switch

JP12

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

Monitor type select color

JP3

Open

 

Monitor type select monochrome

JP3

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

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

20MB

(4) 1M x 9

(4) 4M 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

JP6

JP7

64KB

Open

Open

128KB

pins 1 & 2 closed

Closed

256KB

pins 2 & 3 closed

Closed

CPU TYPE CONFIGURATION

Type

Speed

Oscillator

JP4

JP8

JP9

80486SX

16MHz

32MHz

1 & 2

Open

2 & 3

80486SX

20MHz

40MHz

1 & 2

Open

2 & 3

ODP486SX

50MHz

25MHz

2 & 3

1 & 2

1 & 2, 3 & 4

80487SX

25MHz

25MHz

2 & 3

1 & 2

1 & 2, 3 & 4

80486DX

25MHz

25MHz

2 & 3

2 & 3

1 & 2, 3 & 4

80486DX

33MHz

33MHz

2 & 3

2 & 3

1 & 2, 3 & 4

80486DX

50MHz

50MHz

2 & 3

2 & 3

1 & 2, 3 & 4

80486DX2

50MHz

25MHz

2 & 3

2 & 3

1 & 2, 3 & 4

80486DX2

66MHz

33MHz

2 & 3

2 & 3

1 & 2, 3 & 4

Note:The location of JP4 is unidentified. Pins designated should be in the closed position.