ADDTECH RESEARCH, INC.

GALAXY II 486 VER. 1.0

Processor

CX486S2/80486SX/CX486DX/AMD486DX/80486DX/80486DX2/80486DX4/ Pentium Overdrive

Processor Speed

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

Chip Set

Cypress

Max. Onboard DRAM

128MB

Cache

128/256/512/1024KB

BIOS

AMI/Award

Dimensions

330mm x 218mm

I/O Options

32-bit PCI bus slots (4), 32-bit VESA local bus slots (2)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

JP1

Reset switch

JP59

Turbo switch

JP49

Speaker

JP60

Turbo LED

JP50

32-bit PCI bus slots

P0 - P3

Power LED & keylock

JP57

32-bit VESA Local bus slots

SL1 & SL2

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

CMOS memory normal operation

JP2

pins 1 & 2 closed

 

CMOS memory clear

JP2

pins 2 & 3 closed

»

Flash memory disabled

JP3

Open

 

Flash memory voltage select 5v

JP3

pins 1 & 2 closed

 

Flash memory voltage select 12v

JP3

pins 2 & 3 closed

»

SIMM type select single bank

JP4

pins 1 & 2 closed

 

SIMM type select double bank

JP4

pins 2 & 3 closed

»

Factory configured - do not alter

JP9

N/A

»

Factory configured - do not alter

JP10

Open

»

CPU type select Intel/AMD

JP27

pins 1 & 2 closed

 

CPU type select Cyrix

JP27

pins 2 & 3 closed

»

Factory configured - do not alter

JP32

pins 2 & 3 closed

»

Factory configured - do not alter

JP34

N/A

»

Factory configured - do not alter

JP35

pins 2 & 3 closed

»

CPU clock delay select 1 delay

JP36

pins 2 & 3 closed

 

CPU clock delay select 0 delay

JP36

pins 1 & 2 closed

»

Factory configured - do not alter

JP42

N/A

»

Factory configured - do not alter

JP51

N/A

»

Monitor type select color

JP55

Open

 

Monitor type select monochrome

JP55

Closed

»

Factory configured - do not alter

JP58

N/A

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

3MB

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

NONE

4MB

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

2MB

(1) 512K x 36

NONE

NONE

NONE

4MB

(1) 512K x 36

(1) 512K x 36

NONE

NONE

4MB

(1) 1M x 36

NONE

NONE

NONE

8MB

(1) 1M x 36

(1) 1M x 36

NONE

NONE

8MB

(1) 2M x 36

NONE

NONE

NONE

12MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

NONE

16MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

16MB

(1) 2M x 36

(1) 2M x 36

NONE

NONE

16MB

(1) 4M x 36

NONE

NONE

NONE

17MB

(1) 256K x 36

(1) 4M x 36

NONE

NONE

20MB

(1) 1M x 36

(1) 4M x 36

NONE

NONE

24MB

(1) 1M x 36

(1) 1M x 36

(1) 4M x 36

NONE

24MB

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

NONE

32MB

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

32MB

(1) 4M x 36

(1) 4M x 36

NONE

NONE

32MB

(1) 8M x 36

NONE

NONE

NONE

DRAM CONFIGURATION (CON’T)

36MB

(1) 1M x 36

(1) 4M x 36

(1) 4M x 36

NONE

40MB

(1) 1M x 36

(1) 1M x 36

(1) 4M x 36

(1) 4M x 36

48MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

NONE

52MB

(1) 1M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

64MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

64MB

(1) 8M x 36

(1) 8M x 36

NONE

NONE

64MB

(1) 16MB x 36

NONE

NONE

NONE

96MB

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

NONE

128MB

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

128MB

(1) 16MB x 36

(1) 16MB x 36

NONE

NONE

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) 32K x 8

256KB

(4) 64K x 8

NONE

(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

1MB

(4) 128K x 8

(4) 128K x 8

(1) 128K x 8

CACHE JUMPER CONFIGURATION

Size

JP18

JP19

JP20

128KB

Open

pins 2 & 3 closed

pins 1 & 2 closed

256KB

Open

pins 1 & 2 closed

pins 1 & 2 closed

256KB

Open

pins 2 & 3 closed

pins 1 & 2 closed

512KB

Open

pins 2 & 3 closed

pins 2 & 3 closed

512KB

pins 1 & 2 closed

Open

pins 2 & 3 closed

1MB

pins 2 & 3 closed

Open

pins 2 & 3 closed

CPU TYPE CONFIGURATION

Type

JP26

JP40

JP41

JP43

JP44

80486SX

Open

1 & 3, 2 & 4

Open

Open

1 & 2

CX486S2

Open

1 & 3, 2 & 4

Closed

2 & 3

2 & 3

CX486DX

Open

1 & 3, 2 & 4

Open

Open

1 & 2

80486DX/DX2

Open

1 & 3, 2 & 4

Open

Open

1 & 2

80486DX4

Closed

3 & 5, 4 & 6

Open

Open

1 & 2

Pentium Overdrive

Open

1 & 3, 2 & 4

Open

1 & 2

2 & 3

Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION

Type

JP45

JP46

JP47

JP48

JP54

80486SX

Open

Open

Open

2 & 3

Open

CX486S2

3 & 4

4 & 5

Open

2 & 3

Closed

CX486DX

Open

Open

2 & 3

1 & 2, 3 & 4

Open

80486DX/DX2

Open

Open

2 & 3

1 & 2, 3 & 4

Open

80486DX4

Open

Open

2 & 3

1 & 2, 3 & 4

Open

Pentium Overdrive

1 & 2, 3 & 4

1 & 2

2 & 3

1 & 2, 3 & 4

Open

Note: Pins designated should be in the closed position.

CPU SPEED CONFIGURATION

Speed

JP15

JP25

JP28

JP29

25MHz

Closed

Open

pins 1 & 2 closed

pins 2 & 3 closed

33MHz

Open

Open

pins 2 & 3 closed

pins 1 & 2 closed

40MHz

Open

Closed

pins 1 & 2 closed

pins 2 & 3 closed

50iMHz

Closed

Open

pins 1 & 2 closed

pins 2 & 3 closed

66iMHz

Open

Open

pins 2 & 3 closed

pins 1 & 2 closed

75iMHz

Closed

Open

pins 1 & 2 closed

pins 2 & 3 closed

100iMHz

Open

Open

pins 2 & 3 closed

pins 1 & 2 closed

VESA BUS SPEED CONFIGURATION

Speed

JP52

JP53

JP56

25MHz

Open

Open

pins 2 & 3 closed

33MHz

Open

Open

pins 2 & 3 closed

40MHz

Closed

Closed

pins 1 & 2 closed

PCI MODE CONFIGURATION

Mode

JP11

JP30

JP31

JP33

Synchronous

Open

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

Asynchronous

Closed

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

PCI IRQ CONFIGURATION

PCI slot

JP21A(IRQ9)

JP21B (IRQ10)

JP21C (IRQ11)

JP21D (IRQ12)

JP21E (IRQ15)

P0 & P1

1 & 2

1 & 2

1 & 2

1 & 2

1 & 2

P2

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

Note: Pins designated should be in the closed position. Slots P0 & P1 are PCI compliant and slot P2 is non PCI compliant.

PCI IRQ CONFIGURATION

PCI slot

JP21F (IRQ14)

P3 (PCI compliant)

Closed

P3 (non PCI compliant)

Open

Note: This setting is used only for cards that require the use of IRQ14.