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MPOWER4

MICRONICS COMPUTERS, INC.

MPOWER4

Processor

80486SX/ODP486SX/80486DX/80486DX2/Pentium Overdrive

Processor Speed

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

Chip Set

Micronics

Max. Onboard DRAM

64MB

Cache

64/128/256KB

BIOS

Phoenix

Dimensions

330mm x 218mm

I/O Options

32-bit VESA local bus, floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial ports (2), VGA feature connector, VGA port

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Parallel port

J1

Video feature connector

J31

Serial port 2

J2

VGA port

J32

Serial port 1

J3

Turbo LED

W18

Power LED & keylock

J7

Turbo switch

W19

PS/2 mouse port

J10

Reset switch

W20

IDE interface

J26

IDE interface LED

W21

Floppy drive interface

J27

32-bit VESA Local bus slots

SL1

Speaker

J30

   

USER CONFIGURABLE SETTINGS

Function

Jumper/Switch

Position

Real time clock installed

W1

Closed

 

Real time clock not installed

W1

Open

Monitor type select color

W2

Closed

 

Monitor type select monochrome

W2

Open

IRQ12 PS/2 mouse enabled

W3

Closed

 

PS/2 mouse disabled

W3

Open

Parity enabled

W4

Closed

 

Parity disabled

W4

Open

CMOS memory normal operation

W5

Closed

 

CMOS memory clear

W5

Open

Super I/O enabled

W7

Open

 

Super I/O disabled

W7

Closed

Flash BIOS write protect enabled

W8

Open

 

Flash BIOS write protect disabled

W8

Closed

PQFP not installed

W13

Open

 

PQFP disabled by Overdrive processor

W13

pins 1 & 2 closed

 

PQFP manually disabled

W13

pins 2 & 3 closed

Factory configured - do not alter

W15

pins 1 & 2 closed

Factory configured - do not alter

W31

Open

80486SX CPU enabled

W33

pins 2 & 3 closed

 

80486SX CPU disabled

W33

1 & 2, 3 & 4 closed

Factory configured - do not alter

W36

Open

VGA IRQ9 disabled

W303

Open

 

VGA IRQ9 enabled

W303

Closed

Factory configured - do not alter

SW1/3

Open

Factory configured - do not alter

SW1/4

Open

 

VPU chip disabled

SW2/1

Open

 

VPU chip enabled

SW2/1

Closed

 

Video RAMDAC at snooping mode

SW2/2

Open

 

Video RAMDAC at normal mode

SW2/2

Closed

 

VGA BIOS disabled

SW2/3

Open

 

VGA BIOS enabled

SW2/3

Closed

 

External speaker disabled

SW2/3

Open

 

External speaker enabled

SW2/3

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

6MB

(1) 256K x 36

(1) 256K x 36

(1) 1M x 36

NONE

8MB

(1) 1M x 36

(1) 1M x 36

NONE

NONE

10MB

(1) 256K x 36

(1) 256K x 36

(1) 1M x 36

(1) 1M x 36

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) 4M x 36

NONE

NONE

NONE

18MB

(1) 256K x 36

(1) 256K x 36

(1) 4M x 36

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

32MB

(1) 4M x 36

(1) 4M x 36

NONE

NONE

36MB

(1) 4M 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

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

128KB

(4) 32K x 8

NONE

(1) 32K x 8

256KB

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

W10

W11

W16

W17

W22

W23

W24

64KB

1 & 2

1 & 2

1 & 2

1 & 2

2 & 3

2 & 3

1 & 2

128KB

1 & 2

2 & 3

1 & 2

2 & 3

1 & 2

1 & 2

2 & 3

256KB

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

Note:Pins designated should be in the closed position.

80486DX4 CONFIGURATION

80486DX4

W32

W34

Disabled

pins 1 & 2 closed

pins 3 & 4 closed

Enabled

Open

Open

CPU SPEED CONFIGURATION

Speed

Switch 1/1

Switch 1/2

25MHz

Open

Closed

33MHz

Closed

Closed

50iMHz

Open

Closed

66iMHz

Closed

Closed

75iMHz

Open

Closed

100iMHz

Closed

Closed

DMA CHANNEL CONFIGURATION

DMA Channel

W98

W99

Channel 1

pins 1 & 2 closed

pins 1 & 2 closed

Channel 2

pins 2 & 3 closed

pins 2 & 3 closed

VRAM CONFIGURATION

Size

Bank 0

Bank 1

1MB

(2) 512K x 8

NONE

2MB

(2) 512K x 8

(8) 256K x 4

Note: Bank 0 is factory installed and is not configurable.