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486F39X, 486VL VIII

FREE COMPUTER TECHNOLOGY, INC.

486F39X, 486VL VIII

Processor

CX486S/80486SX/80486SX2/CX486DX/80486DX/CX486DX2/80486DX2/ 80486DX4/Pentium Overdrive

Processor Speed

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

Chip Set

OPTI

Max. Onboard DRAM

64MB

Cache

128/256/512KB

BIOS

Award

Dimensions

330mm x 218mm

I/O Options

32-bit VESA local bus slots (3), green PC connector

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Turbo switch

J1

Break switch

J6

Turbo LED

J2

External battery

J7

Reset switch

J3

Green PC connector

JP2

Power LED & keylock

J4

Green PC connector

JP3

Speaker

J5

32-bit VESA Local bus slots

SL1 - SL3

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Ľ

CMOS memory normal operation

JP4

pins 2 & 3 closed

 

CMOS memory clear

JP4

pins 1 & 2 closed

DRAM CONFIGURATION (GROUP 1)

Size

Bank 0

Bank 1

Bank 2

1MB

(4) 256Kx 9

NONE

NONE

2MB

(4) 256K x 9

(1) 256K x 36

NONE

4MB

(4) 256K x 9

(1) 256K x 36

(1) 512K x 36

4MB

(4) 1M x 9

NONE

NONE

5MB

(4) 256K x 9

(1) 1M x 36

NONE

6MB

(4) 256K x 9

(1) 256K x 36

(1) 1M x 36

8MB

(4) 1M x 9

(1) 1M x 36

NONE

10MB

(4) 256K x 9

(1) 256K x 36

(1) 2M x 36

12MB

(4) 1M x 9

(1) 1M x 36

(1) 1M x 36

16MB

(4) 4M x 9

NONE

NONE

16MB

(4) 1M x 9

(1) 1M x 36

(1) 2M x 36

17MB

(4) 256K x 9

(1) 4M x 36

NONE

18MB

(4) 256K x 9

(1) 256K x 36

(1) 4M x 36

20MB

(4) 1M x 9

(1) 4M x 36

NONE

24MB

(4) 1M x 9

(1) 1M x 36

(1) 4M x 36

32MB

(4) 4M x 9

(1) 4M x 36

NONE

36MB

(4) 1M x 9

(1) 4M x 36

(1) 4M x 36

40MB

(4) 1M x 9

(1) 1M x 36

(1) 8M x 36

48MB

(4) 4M x 9

(1) 4M x 36

(1) 4M x 36

64MB

(4) 4M x 9

(1) 4M x 36

(1) 8M x 36

DRAM CONFIGURATION (GROUP 2)

Size

Bank 0

Bank 1

Bank 2

1MB

NONE

(1) 256K x 36

NONE

2MB

NONE

(1) 256K x 36

(1) 256K x 36

4MB

NONE

(1) 1M x 36

NONE

5MB

NONE

(1) 256K x 36

(1) 1M x 36

8MB

NONE

(1) 1M x 36

(1) 1M x 36

16MB

NONE

(1) 4M x 36

NONE

17MB

NONE

(1) 256K x 36

(1) 4M x 36

20MB

NONE

(1) 1M x 36

(1) 4M x 36

32MB

NONE

(1) 4M x 36

(1) 4M x 36

DRAM CONFIGURATION (GROUP 3)

Size

Bank 0

Bank 1

Bank 2

2MB

NONE

(1) 512K x 36

NONE

4MB

NONE

(1) 512K x 36

(1) 512K x 36

6MB

NONE

(1) 512K x 36

(1) 1M x 36

8MB

NONE

(1) 2M x 36

NONE

10MB

NONE

(1) 512K x 36

(1) 2M x 36

12MB

NONE

(1) 2M x 36

(1) 1M x 36

16MB

NONE

(1) 2M x 36

(1) 2M x 36

18MB

NONE

(1) 512K x 36

(1) 4M x 36

24MB

NONE

(1) 2M x 36

(1) 4M x 36

32MB

NONE

(1) 8M x 36

NONE

40MB

NONE

(1) 2M x 36

(1) 8M x 36

48MB

NONE

(1) 8M x 36

(1) 4M x 36

64MB

NONE

(1) 8M x 36

(1) 8M x 36

DRAM JUMPER CONFIGURATION

Group

JP31

Group 1

pins 2 & 3, 4 & 5 closed

Group 2

pins 1 & 2, 3 & 4 closed

Group 3

pins 1 & 2, 4 & 5 closed

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

128KB

(4) 32K x 8

NONE

(1) 8K x 8

256KB

(4) 32K x 8

(4) 32K x 8

(1) 16K x 8 or (1) 32K x 8

256KB

(4) 64K x 8

NONE

(1) 16K x 8 or (1) 32K x 8

512KB

(4) 64K x 8

(4) 64K x 8

(1) 32K x 8

512KB

(4) 128K x 8

NONE

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

JP12

JP21

128KB

pins 1 & 2 closed

Open

256KB

pins 2 & 3 closed

Open

256KB

pins 1 & 2, 3 & 4 closed

Open

512KB

pins 2 & 3, 4 & 5 closed

Closed

512KB

pins 1 & 2, 3 & 4 closed

Closed

CPU TYPE CONFIGURATION

Type

JP6

JP7

CX486S

1 & 2, 3 & 4

2 & 3, 4 & 5, 7 & 8, 9 & 10

80486SX/SX2

2 & 3, 4 & 5

1 & 2, 3 & 4, 6 & 7, 8 & 9

CX486DX

1 & 2, 3 & 4

2 & 3, 4 & 5, 7 & 8, 9 & 10

CX486DX2

1 & 2, 3 & 4

2 & 3, 4 & 5, 7 & 8, 9 & 10

80486DX/DX2

2 & 3, 4 & 5

1 & 2, 3 & 4, 6 & 7, 8 & 9

80486DX4 (2x)

2 & 3, 4 & 5

1 & 2, 3 & 4, 6 & 7, 8 & 9

80486DX4 (2.5x)

2 & 3, 4 & 5

1 & 2, 3 & 4, 6 & 7, 8 & 9

80486DX4 (3x)

2 & 3, 4 & 5

1 & 2, 3 & 4, 6 & 7, 8 & 9

Overdrive

2 & 3, 4 & 5

1 & 2, 3 & 4, 6 & 7, 8 & 9

Pentium Overdrive

1 & 2, 4 & 5

1 & 2, 3 & 4, 6 & 7, 8 & 9

Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION (CONíT)

Type

JP11

JP14

JP15

CX486S

Open

2 & 3, 5 & 6

3 & 4

80486SX/SX2

Open

2 & 3, 4 & 5, 6 & 7

3 & 4

CX486DX

Open

3 & 4

1 & 2, 5 & 6

CX486DX2

Open

1 & 2, 5 & 6

1 & 2, 3 & 4

80486DX/DX2

Open

1 & 2, 4 & 5, 6 & 7

3 & 4

80486DX4 (2x)

2 & 3

1 & 2, 4 & 5, 6 & 7

3 & 4

80486DX4 (2.5x)

1 & 2

1 & 2, 4 & 5, 6 & 7

3 & 4

80486DX4 (3x)

Open

1 & 2, 4 & 5, 6 & 7

3 & 4

Overdrive

Open

1 & 2, 4 & 5, 6 & 7

3 & 4

Pentium Overdrive

Open

1 & 2, 4 & 5, 6 & 7

4 & 5

Note: Pins designated should be in the closed position.

CPU SPEED CONFIGURATION

Speed

JP17

JP19

JP20

25MHz

Closed

Open

Closed

33MHz

Closed

Closed

Open

40MHz

Open

Open

Closed

50iMHz

Closed

Open

Closed

50MHz

Open

Closed

Open

66iMHz

Closed

Closed

Open

BUS SPEED CONFIGURATION

CPU speed

JP24

<=33MHz

Open

>33MHz

Closed