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





S486V

UNIDENTIFIED

S486V

Processor

80486SX/80487SX/80486DX/80486DX2

Processor Speed

20/25/33/40/50(internal)/50/66(internal)/80(internal)MHz

Chip Set

SIS

Max. Onboard DRAM

32MB

Cache

64/128/256KB

BIOS

Unidentified

Dimensions

254mm x 218mm

I/O Options

32-bit VESA local bus slots (3)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Speaker

JP13

External battery

JP22

Turbo LED

JP14

Reset switch

JP24

Turbo switch

JP15

32-bit VESA local bus slots

SL1 - SL3

Power LED & keylock

JP19

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

 

Monitor type select color

JP20

Closed

 

Monitor type select monochrome

JP20

Open

CMOS memory normal operation

JP21

pins 1 & 2 closed

 

CMOS memory clear

JP21

pins 2 & 3 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

1MB

(1) 256K x 36

NONE

2MB

(1) 256K x 36

(1) 256K x 36

2MB

(1) 512K x 36

NONE

4MB

(1) 512K x 36

(1) 512K x 36

4MB

(1) 1M x 36

NONE

6MB

(1) 512K x 36

(1) 1M x 36

8MB

(1) 1M x 36

(1) 1M x 36

8MB

(1) 2M x 36

NONE

16MB

(1) 2M x 36

(1) 2M x 36

16MB

(1) 4M x 36

NONE

18MB

(1) 512K x 36

(1) 4M x 36

20MB

(1) 1M x 36

(1) 4M x 36

32MB

(1) 4M x 36

(1) 4M x 36

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG (U11)

TAG (U60)

64KB

(4) 8K x 8

(4) 8K x 8

(1) 8K x 8

(1) 8K x 8

128KB

(4) 32K x 8

NONE

(1) 32K x 8

(1) 8K x 8

256KB

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

JP8

JP9

JP10

JP11

JP12

JP61

JP86

64KB

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

128KB

2 & 3

1 & 2

1 & 2

1 & 2

2 & 3

1 & 2

2 & 3

256KB

1 & 2

1 & 2

2 & 3

Open

1 & 2

1 & 2

1 & 2

Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION

Type

JP2

JP3

JP4

80486SX

Open

pins 2 & 3 closed

Open

80487SX

Closed

pins 1 & 2 closed

pins 2 & 3 closed

80486DX

Closed

pins 1 & 2 closed

pins 1 & 2 closed

80486DX2

Closed

pins 1 & 2 closed

pins 1 & 2 closed

CPU SPEED CONFIGURATION

Speed

JP16

JP17

JP18

20MHz

Open

Open

Open

25MHz

Closed

Open

Open

33MHz

Closed

Closed

Closed

40MHz

Closed

Closed

Open

50MHz

Open

Open

Closed

50iMHz

Closed

Open

Open

66iMHz

Closed

Open

Closed

80iMHz

Open

Closed

Closed

VL BUS SPEED CONFIGURATION

CPU speed

JP25

JP26

<= 33MHz

pins 1 & 2 closed

pins 1 & 2 closed

> 33MHz

pins 2 & 3 closed

pins 2 & 3 closed