...because we can't all be on the bleeding edge...





486VESA VER. 4.2

SOYO COMPUTER CO., LTD.

486VESA VER. 4.2

Processor

CX486M6/CX486M7/80486SX/80486DX/80486DX280486DX4/P24D/Pentium Overdrive

Processor Speed

25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz

Chip Set

Unidentified

Max. Onboard DRAM

128MB

Cache

64/128/256KB

BIOS

Award

Dimensions

254mm x 220mm

I/O Options

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

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Power LED & keylock

J17

Turbo LED

J22

Speaker

J18

Green PC connector

JP4

Reset switch

J19

Green PC connector

JP6

External battery

J20

Green PC connector

JP7

Turbo switch

J21

32-bit VESA local bus slots

SL1 - SL3

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Ľ

Monitor type select monochrome

JP3

Open

 

Monitor type select color

JP3

Closed

Ľ

CMOS memory normal operation

JP5

pins 1 & 2 closed

 

CMOS memory clear

JP5

pins 2 & 3 closed

Ľ

Factory configured - do not alter

JP17

pins 1 & 2 closed

Ľ

Factory configured - do not alter

JP27

Closed

DRAM CONFIGURATION (SETTING 1)

Size

Bank 0

Bank 1

Bank 2

1MB

(4) 256K x 9

NONE

NONE

2MB

(4) 256K x 9

(4) 256K x 9

NONE

4MB

(4) 1M x 9

NONE

NONE

5MB

(4) 256K x 9

(1) 1M x 36

NONE

6MB

(4) 256K x 9

(4) 256K x 9

(1) 1M x 36

8MB

(4) 1M x 9

(1) 1M x 36

NONE

12MB

(4) 1M x 9

(1) 1M x 36

(1) 1M x 36

16MB

(4) 4M x 9

NONE

NONE

17MB

(4) 256K x 9

(1) 4M x 36

NONE

18MB

(4) 256K x 9

(4) 256K x 9

(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

48MB

(4) 4M x 9

(1) 4M x 36

(1) 4M x 36

64MB

(4) 16M x 9

NONE

NONE

65MB

(4) 256K x 9

(1) 16M x 36

NONE

68MB

(4) 1M x 9

(1) 16M x 36

NONE

72MB

(4) 1M x 9

(1) 1M x 36

(1) 16M x 36

80MB

(4) 4M x 9

(1) 16M x 36

NONE

96MB

(4) 4M x 9

(1) 4M x 36

(1) 16M x 36

128MB

(4) 16M x 9

(1) 16M x 36

NONE

DRAM CONFIGURATION (SETTING 2)

Size

Bank 0

Bank 1

Bank 2

1MB

(1) 256K x 36

NONE

NONE

2MB

(1) 256K x 36

(1) 256K x 36

NONE

2MB

(1) 512K x 36

NONE

NONE

4MB

(1) 512K x 36

(1) 512K x 36

NONE

4MB

(1) 1M x 36

NONE

NONE

5MB

(1) 256K x 36

(1) 1M x 36

NONE

6MB

(1) 256K x 36

(1) 256K x 36

(1) 1M x 36

6MB

(1) 512K x 36

(1) 1M x 36

NONE

8MB

(1) 1M x 36

(1) 1M x 36

NONE

DRAM CONFIGURATION (SETTING 2 CONíT)

Size

Bank 0

Bank 1

Bank 2

8MB

(1) 2M x 36

NONE

NONE

12MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

12MB

(1) 1M x 36

(1) 2M x 36

NONE

16MB

(1) 4M x 36

NONE

NONE

16MB

(1) 2M x 36

(1) 2M x 36

NONE

17MB

(1) 256K x 36

(1) 4M x 36

NONE

18MB

(1) 256K x 36

(1) 256K x 36

(1) 4M x 36

18MB

(1) 512K x 36

(1) 4M x 36

NONE

20MB

(1) 1M x 36

(1) 4M x 36

NONE

24MB

(1) 1M x 36

(1) 1M x 36

(4) 4M x 9

32MB

(1) 4M x 36

(1) 4M x 36

NONE

32MB

(1) 8M x 36

NONE

NONE

36MB

(1) 1M x 36

(1) 4M x 36

(4) 4M x 9

36MB

(1) 1M x 36

(1) 8M x 36

NONE

48MB

(1) 4M x 36

(1) 4M x 36

(4) 4M x 9

48MB

(1) 4M x 36

(1) 8M x 36

NONE

64MB

(1) 8M x 36

(1) 8M x 36

NONE

64MB

(1) 16M x 36

NONE

NONE

65MB

(1) 256K x 36

(1) 16M x 36

NONE

68MB

(1) 1M x 36

(1) 16M x 36

NONE

72MB

(1) 1M x 36

(1) 1M x 36

(4) 16M x 9

80MB

(1) 4M x 36

(1) 16M x 36

NONE

96MB

(1) 4M x 36

(1) 4M x 36

(4) 16M x 9

128MB

(1) 16M x 36

(1) 16M x 36

NONE

DRAM JUMPER CONFIGURATION

Setting

JP35

JP36

JP37

1

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

2

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

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

256KB

(4) 64K x 8

NONE

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

CACHE JUMPER CONFIGURATION

Size

JP9

JP10

JP13

64KB

pins 2 & 3 closed

pins 2 & 3 closed

pins 1 & 2 closed

128KB

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

256KB

pins 1 & 2 closed

pins 2 & 3 closed

pins 2 & 3 closed

256KB

pins 1 & 2 closed

pins 2 & 3 closed

pins 2 & 3 closed

CPU TYPE CONFIGURATION

Type

JP1

JP2

JP12

JP14

JP15

JP16

CX486 (M6)

1 & 2

2 & 3

1 & 2

2 & 3

Open

Open

CX486 (M7)

1 & 2

2 & 3

1 & 2

1 & 2, 3 & 4

2 & 3

Open

80486SX

2 & 3

1 & 2

2 & 3

2 & 3

Open

Open

80486DX

2 & 3

1 & 2

2 & 3

1 & 2, 3 & 4

2 & 3

Open

80486DX2

2 & 3

1 & 2

2 & 3

1 & 2, 3 & 4

2 & 3

Open

P24D

1 & 2

1 & 2

2 & 3

1 & 2, 3 & 4

2 & 3

Closed

80486DX4

2 & 3

1 & 2

2 & 3

1 & 2, 3 & 4

2 & 3

Open

P24T

2 & 3

1 & 2

2 & 3

1 & 2, 3 & 4

1 & 2

Open

Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION (CONíT)

Type

JP18

JP19

JP20

JP21

JP22

JP23

JP111

CX486 (M6)

2 & 3

2 & 3

Open

Open

2 & 3

2 & 3

2 & 3

CX486 (M7)

2 & 3

2 & 3

Open

Open

2 & 3

2 & 3

2 & 3

80486SX

2 & 3

4 & 5

Open

1 & 2

Open

Open

3 & 4

80486DX

2 & 3

4 & 5

Open

1 & 2

Open

Open

3 & 4

80486DX2

2 & 3

4 & 5

Open

1 & 2

Open

Open

3 & 4

P24D

1 & 2

4 & 5

Closed

2 & 3

1 & 2

Open

1 & 2, 3 & 4

80486DX4

2 & 3

Open

Open

1 & 2

Open

Open

3 & 4

P24T

1 & 2

1 & 2

Open

Open

1 & 2

1 & 2

3 & 4

Note: Pins designated should be in the closed position.

CPU SPEED CONFIGURATION

Speed

JP29

JP30

JP31

JP34

25MHz

Closed

Open

Closed

Closed

33MHz

Open

Closed

Closed

Closed

40MHz

Closed

Open

Open

Closed

50iMHz

Closed

Open

Closed

Closed

50MHz

Open

Closed

Open

Closed

66iMHz

Open

Closed

Closed

Closed

75iMHz

Closed

Open

Closed

Open

100iMHz

Open

Closed

Closed

Open

CPU VOLTAGE CONFIGURATION

Voltage

JP24

3.3v

pins 1 & 2, 4 & 5 closed

5.0v

pins 2 & 3, 5 & 6 closed