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80486EISA (Ver. 2.0)

FREE COMPUTER TECHNOLOGY, INC.

80486EISA (Ver. 2.0)

Processor

80486SX/80487SX/80486DX/80486DX2

Processor Speed

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

Chip Set

OPTI

Max. Onboard DRAM

128MB

Cache

64/128/256/512KB

BIOS

AMI

Dimensions

330mm x 365mm

I/O Options

None

NPU Options

4167

CONNECTIONS

Purpose

Location

Purpose

Location

Turbo LED

H1

Speaker

H4

Reset switch

H2

Power LED & keylock

H5

Turbo switch

H3

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Factory configured - do not alter

JP1

Open

Factory configured - do not alter

JP2

pins 2 & 3 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

64MB

(4) 16M x 9

NONE

128MB

(4) 16M x 9

(4) 16M x 9

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG (U26)

TAG (U31)

64KB

(4) 8K x 8

(4) 8K x 8

(1) 8K x 8

(1) 16K x 1

128KB

(4) 32K x 8

NONE

(1) 8K x 8

(1) 16K x 1

256KB

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

(1) 16K x 1

512KB

(4) 128K x 8

NONE

(1) 32K x 8

(1) 64K x 1

CACHE JUMPER CONFIGURATION

Size

J4

J5

J6

J7

J8

64KB

pins 2 & 3 closed

Open

Open

Open

Open

128KB

pins 1 & 2 closed

Closed

Open

Open

Closed

256KB

pins 2 & 3 closed

Closed

Closed

Open

Closed

512KB

pins 1 & 2 closed

Closed

Closed

Closed

Closed

CPU SPEED CONFIGURATION

Speed

J9

J10

20MHz

Open

Open

25MHz

Open

Open

33MHz

Open

Closed

40MHz

Closed

Open

50iMHz

Open

Open

50MHz

Closed

Closed

66iMHz

Open

Closed

CPU TYPE CONFIGURATION

Type

J11

J12

80486SX

pins 2 & 3 closed

open

80487SX

pins 1 & 2 and 3 & 4 closed

pins 1 & 2 closed

80486DX

pins 1 & 2 and 3 & 4 closed

pins 2 & 3 closed

80486DX2

pins 1 & 2 and 3 & 4 closed

pins 2 & 3 closed