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MS-4145

MICRO-STAR INTERNATIONAL CO., LTD.

MS-4145

Processor

80486SX/SL80486SX/AM486DX/(SL)AM486DX/80486DX/ SL80486DX/CX486DX2/IBM486DX2/SGS486DX2/TI486DX2/ AM486DX2/ODP486DX2/80486DX2/SL80486DX2/SL80486DX4/ P24D/P24T/CX5X86/(SL)AM X5

Processor Speed

25/33/40/50(internal)/66(internal)/75(internal)/80(internal)/ 100(internal)/120(internal)/133(internal)/160(internal)MHz

Chip Set

ALI

Video Chip Set

None

Maximum Onboard Memory

64MB

Maximum Video Memory

None

Cache

128/256/512KB

BIOS

Award

Dimensions

220mm x 220mm

I/O Options

32-bit PCI slots (3), floppy drive interface, IDE interfaces (2), parallel port, serial ports (2)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Serial port 1

CN1

Green PC LED

JG1

Serial port 2

CN2

Power LED & keylock

JFP/pins 1 - 5

Floppy drive interface

CN3

Speaker

JFP/pins 7 - 10

Parallel port

CN4

Turbo LED

JFP/pins 12 & 13

IDE interface 2

CN5

Turbo switch

JFP/pins 15 - 17

IDE interface 1

CN6

Reset switch

JFP/pins 19 & 20

Chassis fan power

FAN

IDE interface LED

JFP/pins 21 & 22

External battery

JBAT

32-bit PCI slots

PC1 PC3

USER CONFIGURABLE SETTINGS

Function

Label

Position

Battery type select internal

JBAT

Pins 2 & 3 closed

 

Battery type select external

JBAT

Closed

Parallel port address select 378

JIRQ

Pins 1 & 2 closed

 

Parallel port address select 278

JIRQ

Pins 2 & 3 closed

Factory configured do not alter

JS3

Unidentified

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

4MB

(1) 1M x 36

None

None

8MB

(1) 1M x 36

(1) 1M x 36

None

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

16MB

(1) 1M x 36

(1) 2M x 36

(1) 1M x 36

20MB

(1) 1M x 36

(1) 4M x 36

None

24MB

(1) 1M x 36

(1) 1M x 36

(1) 4M x 36

24MB

(1) 4M x 36

(1) 2M x 36

None

32MB

(1) 4M x 36

(1) 4M x 36

None

32MB

(1) 8M x 36

None

None

36MB

(1) 1M x 36

(1) 8M x 36

None

40MB

(1) 2M x 36

(1) 8M x 36

None

40MB

(1) 4M x 36

(1) 2M x 36

(1) 4M x 36

40MB

(1) 1M x 36

(1) 8M x 36

(1) 1M x 36

48MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

48MB

(1) 4M x 36

(1) 8M x 36

None

64MB

(1) 8M x 36

(1) 8M x 36

None

64MB

(1) 4M x 36

(1) 8M x 36

(1) 4M x 36

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

128KB

(4) 32K x 8

None

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

256KB (A)

(4) 32K x 8

(4) 32K x 8

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

256KB (B)

(2) 64K x 32

None

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

Note: Board also accepts 512KB cache. The chip sizes and jumper settings are unidentified.

CACHE JUMPER CONFIGURATION

Size

JS1

JS2

JS4

128KB

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 2 & 3 closed

256KB (A)

Pins 2 & 3 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

256KB (B)

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

CPU SPEED SELECTION

Speed

JK1

JK2

25MHz

Open

Pins 1 & 2 closed

33MHz

Pins 1 & 2, 3 & 4 closed

Pins 1 & 2 closed

40MHz

Pins 1 & 2 closed

Pins 2 & 3, 4 & 5 closed

50iMHz

Open

Pins 1 & 2 closed

66iMHz

Pins 1 & 2, 3 & 4 closed

Pins 1 & 2 closed

75iMHz

Open

Pins 1 & 2 closed

80iMHz

Pins 1 & 2 closed

Pins 2 & 3, 4 & 5 closed

100iMHz

Pins 1 & 2, 3 & 4 closed

Pins 1 & 2 closed

120iMHz

Pins 1 & 2 closed

Pins 2 & 3, 4 & 5 closed

133iMHz

Pins 1 & 2, 3 & 4 closed

Pins 1 & 2 closed

160iMHz

Pins 1 & 2 closed

Pins 2 & 3, 4 & 5 closed

CPU TYPE SELECTION

Type

JC1

JC2

JC3

JC4

JC5

80486SX

Open

Open

Open

1 & 2

2 & 3

SL80486SX

Open

Open

Open

1 & 2

2 & 3

AM486DX

Open

Open

Open

2 & 3

1 & 2

(SL)AM486DX

Open

Open

Open

2 & 3

1 & 2

80486DX

Open

Open

Open

2 & 3

1 & 2

SL80486DX

Open

Open

Open

2 & 3

1 & 2

CX486DX2

Open

Closed

Open

2 & 3

1 & 2

IBM486DX2

Open

Closed

Open

2 & 3

1 & 2

SGS486DX2

Open

Closed

Open

2 & 3

1 & 2

TI486DX2

Open

Closed

Open

2 & 3

1 & 2

AM486DX2

Open

Open

Open

2 & 3

1 & 2

ODP486DX2

Open

Open

Open

2 & 3

1 & 2

80486DX2

Open

Open

Open

2 & 3

1 & 2

SL80486DX2

Open

Open

Open

2 & 3

1 & 2

SL80486DX4

Open

Open

Open

2 & 3

1 & 2

P24D

1 & 2, 3 & 4

Open

Open

2 & 3

1 & 2

P24T

1 & 2, 3 & 4

Open

Open

2 & 3

1 & 2

CX5X86

1 & 2, 3 & 4

Open

Open

2 & 3

1 & 2

(SL)AM X5

1 & 2, 3 & 4

Open

Open

2 & 3

1 & 2

Note: Pins designated should be in the closed position.

CPU TYPE SELECTION

Type

R1

R2

R2

80486SX

Pins 1 10 closed

Not installed

Not installed

SL80486SX

Pins 3 13 closed

Not installed

Not installed

AM486DX

Pins 1 10 closed

Not installed

Not installed

(SL)AM486DX

Pins 1 10 closed

Not installed

Not installed

80486DX

Pins 1 10 closed

Not installed

Not installed

SL80486DX

Pins 3 13 closed

Not installed

Not installed

CX486DX2

Installed

Not installed

Not installed

IBM486DX2

Installed

Not installed

Not installed

SGS486DX2

Installed

Not installed

Not installed

TI486DX2

Installed

Not installed

Not installed

AM486DX2

Pins 1 10 closed

Not installed

Not installed

ODP486DX2

Pins 3 13 closed

Not installed

Not installed

80486DX2

Pins 1 10 closed

Not installed

Not installed

SL80486DX2

Pins 3 13 closed

Not installed

Not installed

SL80486DX4

Pins 3 13 closed

Not installed

Not installed

P24D

Pins 5 14 closed

Not installed

Not installed

P24T

Pins 5 14 closed

Not installed

Not installed

CX5X86

Pins 3 13 closed

Not installed

Not installed

(SL)AM X5

Pins 5 14 closed

Not installed

Not installed

CPU VOLTAGE SELECTION

Voltage

JP1

JV1

3v

Open

Open

 

4v

Closed

Open

 

5v

Open

Pins 1 & 2, 3 & 4, 5 & 6 closed

DMA CHANNEL SELECTION

Channel

JP3

JP4

1

Pins 2 & 3 closed

Pins 2 & 3 closed

3

Pins 1 & 2 closed

Pins 1 & 2 closed