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LM-486EISA (BASEBOARD)

ELISA TECHNOLOGY, INC.

LM-486EISA (BASEBOARD)

Processor

80486SX/80487SX/80486DX/80486DX2

Processor Speed

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

Chip Set

OPTI

Max. Onboard DRAM

128MB

Cache

256KB

BIOS

AMI

Dimensions

330mm x 225mm

I/O Options

CPU expansion card slot, 32-bit VESA local bus slots (2)

NPU Options

4167

CONNECTIONS

Purpose

Location

Purpose

Location

Speaker

J1

Reset switch

S1

Power LED & keylock

J2

CPU expansion card

S2

Turbo switch

JP14

32-bit VESA local bus slots

S3 & S4

Turbo LED

JP15

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Factory configured - do not alter

BM1

N/A

Factory configured - do not alter

BM2

N/A

Factory configured - do not alter

JP1 - JP6

Open

Factory configured - do not alter

JP2

Open

Factory configured - do not alter

JP3

Open

Factory configured - do not alter

JP4

Open

Factory configured - do not alter

JP5

Open

Factory configured - do not alter

JP6

Open

Bus master on baseboard (U26) enabled

JP7

pins 1 & 2 closed

 

Bus master on baseboard (U26) disabled

JP7

pins 2 & 3 closed

Monitor type select monochrome

JP8

Open

 

Monitor type select color

JP8

Closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

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

68MB

(4) 1M x 9

(4) 16M x 9

80MB

(4) 4M x 9

(4) 16M x 9

128MB

(4) 16M x 9

(4) 16M x 9

CPU TYPE CONFIGURATION

Type

JP9

JP10

JP11

80487SX-16

Closed

Closed

pins 2 & 3 closed

80487SX-20

Closed

Closed

pins 2 & 3 closed

80486SX-16

Closed

Closed

pins 2 & 3 closed

80486SX-20

Closed

Closed

pins 2 & 3 closed

80486SX-25

Closed

Open

pins 1 & 2 closed

80486DX-25

Closed

Open

pins 1 & 2 closed

80486DX-33

Open

Open

pins 1 & 2 closed

80486DX2-50

Closed

Open

pins 1 & 2 closed

80486DX2-66

Open

Open

pins 1 & 2 closed

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Factory configured - do not alter

JP2

pins 2 & 3 closed

Factory configured - do not alter

JP4

Open

Bus master on CPU card enabled

JP5

Open

 

Bus master on CPU card disabled

JP5

Closed

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG (U16)

Dirty bit (U25)

TAG (U26)

TAG (U27)

64KB

(4) 8K x 8

(4) 8K x 8

(1) 16K x 1

(1) 8K x 8

NONE

(1) 8K x 8

128KB

(4) 32K x 8

NONE

(1) 16K x 1

(1) 8K x 8

NONE

(1) 8K x 8

256KB

(4) 32K x 8

(4) 32K x 8

(1) 16K x 1

(1) 8K x 8

(1) 8K x 8

(1) 8K x 8

512KB

(4) 128K x 8

NONE

(1) 64K x 1

(1) 8K x 8

NONE

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

JP6

JP8

JP9

JP10

JP11

JP12

JP13

64KB

2 & 3

Open

Open

Open

Open

Open

Open

128KB

1 & 2

Closed

Open

Open

Closed

Open

Open

256KB

2 & 3

Closed

Closed

Open

Closed

Closed

Open

512KB

1 & 2

Closed

Closed

Closed

Closed

Closed

Closed

Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION

Type

JP1

JP3

JP7

80487SX-16

pins 1 & 2, 3 & 4 closed

pins 1 & 2 closed

Closed

80487SX-20

pins 1 & 2, 3 & 4 closed

pins 1 & 2 closed

Closed

80486SX-16

pins 2 & 3 closed

Open

Closed

80486SX-20

pins 2 & 3 closed

Open

Closed

80486SX-25

pins 2 & 3 closed

Open

Open

80486DX-25

pins 1 & 2, 3 & 4 closed

pins 2 & 3 closed

Open

80486DX-33

pins 1 & 2, 3 & 4 closed

pins 2 & 3 closed

Open

80486DX2-50

pins 1 & 2, 3 & 4 closed

pins 2 & 3 closed

Open

80486DX2-66

pins 1 & 2, 3 & 4 closed

pins 2 & 3 closed

Open