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WYSE DECISION 486SI

WYSE TECHNOLOGY, INC.

WYSE DECISION 486SI

Processor

80486SX/80486DX/80486DX2

Processor Speed

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

Chip Set

Unidentified

Max. Onboard DRAM

64MB

Cache

64/256KB

BIOS

Unidentified

Dimensions

330mm x 218mm

I/O Options

PS/2 mouse port, parallel port, serial ports (2), VGA port, floppy drive interface, IDE interface

NPU Options

4167

CONNECTIONS

Purpose

Location

Purpose

Location

PS/2 mouse port

CN1

Floppy drive interface

CN6

VGA port

CN2

IDE interface

CN7

Parallel port

CN3

External battery

J1

Serial port 2

CN4

Front panel connector

J2

Serial port 1

CN5

Riser Card

SL1

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

Monitor type select color

JP16

Closed

 

Monitor type select monochrome

JP16

Open

»

Factory configured - do not alter

JP17

Open

 

IDE interface enabled

JP18

Open

»

IDE interface disabled

JP18

Closed

»

Factory configured - do not alter

JP19

Open

»

Factory configured - do not alter

JP20

Open

»

Factory configured - do not alter

JP21

Open

»

Factory configured - do not alter

JP22

Open

»

IRQ2 enabled

JP33

Open

 

IRQ2 disabled

JP33

Closed

»

ET4000 VGA card revision select revision G

JP37

Closed

 

ET4000 VGA card revision select revision F

JP37

Open

»

Clock generator select normal

JP41

pins 1 & 2 closed

 

Clock generator select oscillator

JP41

pins 2 & 3 closed

»

WY-790 enabled

JP42

Closed

 

WY-790 disabled

JP42

Open

»

Diskette controller IRQ select IRQ7

JP44

pins 1 & 2 closed

 

Diskette controller IRQ select IRQ5

JP44

pins 2 & 3 closed

»

Linear address enabled

JP46

pins 2 & 3 closed

 

Linear address disabled

JP46

pins 1 & 2 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

1MB

(1) 256K x 36

NONE

NONE

NONE

2MB

(1) 256K x 36

(1) 256K x 36

NONE

NONE

4MB

(1) 1M x 36

NONE

NONE

NONE

5MB

(1) 1M x 36

(1) 256K x 36

NONE

NONE

6MB

(1) 1M x 36

(1) 256K x 36

(1) 256K x 36

NONE

7MB

(1) 1M x 36

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

8MB

(1) 1M x 36

(1) 1M x 36

NONE

NONE

9MB

(1) 1M x 36

(1) 1M x 36

(1) 256K x 36

NONE

10MB

(1) 1M x 36

(1) 1M x 36

(1) 256K x 36

(1) 256K x 36

12MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

NONE

13MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

(1) 256K x 36

16MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

16MB

(1) 4M x 36

NONE

NONE

NONE

17MB

(1) 4M x 36

(1) 256K x 36

NONE

NONE

18MB

(1) 4M x 36

(1) 256K x 36

(1) 256K x 36

NONE

19MB

(1) 4M x 36

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

20MB

(1) 4M x 36

(1) 1M x 36

NONE

NONE

21MB

(1) 4M x 36

(1) 1M x 36

(1) 256K x 36

NONE

22MB

(1) 4M x 36

(1) 1M x 36

(1) 256K x 36

(1) 256K x 36

24MB

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

NONE

25MB

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

(1) 256K x 36

DRAM CONFIGURATION (CON’T)

Size

Bank 0

Bank 1

Bank 2

Bank 3

28MB

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

32MB

(1) 4M x 36

(1) 4M x 36

NONE

NONE

33MB

(1) 4M x 36

(1) 4M x 36

(1) 256K x 36

NONE

34MB

(1) 4M x 36

(1) 4M x 36

(1) 256K x 36

(1) 256K x 36

36MB

(1) 4M x 36

(1) 4M x 36

(1) 1M x 36

NONE

37MB

(1) 4M x 36

(1) 4M x 36

(1) 1M x 36

(1) 256K x 36

40MB

(1) 4M x 36

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

48MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

NONE

49MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 256K x 36

52MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 1M x 36

64MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

64KB

(4) 8K x 8

(4) 8K x 8

(1) 8K x 8

256KB

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

JP4

JP5

JP7

None

Open

Open

Open

64KB

Open

Open

Open

256KB

Closed

Closed

Closed

CPU TYPE CONFIGURATION

Type

JP1

JP2

JP3

80486SX

Open

Open

pins 1 & 2 closed

80486DX

pins 1 & 2 closed

Closed

pins 2 & 3 closed

SL80486DX2

pins 1 & 2 closed

Closed

pins 2 & 3 closed

CPU SPEED CONFIGURATION

Speed

JP38

JP39

JP40

16MHz

Closed

Open

Closed

20MHz

Closed

Open

Open

25MHz

Open

Closed

Closed

33MHz

Open

Closed

Open

50iMHz

Open

Closed

Closed

66iMHz

Open

Closed

Open

VRAM CONFIGURATION

Size

Bank 0

Bank 1

512KB

(4) 256K x 4

NONE

1MB

(4) 256K x 4

(4) 256K x 4

VGA CONFIGURATION

Setting

JP8

JP35

JP45

Enabled

pins 2 & 3 closed

pins 1 & 2 closed

pins 1 & 2 closed

Disabled

pins 1 & 2 closed

pins 2 & 3 closed

pins 2 & 3 closed

VGA WAIT STATE CONFIGURATION

Wait states

JP31

JP32

0 wait states

Closed

Open

1 wait state

Open

Closed