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386DX/486SX/486DX/486DX2

MAGITRONICS

386DX/486SX/486DX/486DX2

Processor

80386DX/80486SX/80487SX/80486DX/80486DX2

Processor Speed

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

Chip Set

Unidentified

Max. Onboard DRAM

32MB

Cache

64/128/256KB

BIOS

AMI

Dimensions

254mm x 220mm

I/O Options

None

NPU Options

80387DX

CONNECTIONS

Purpose

Location

Purpose

Location

Reset switch

J1

Speaker

J4

Turbo switch

J2

Power LED & keylock

J5

Turbo LED

J3

External battery

J7

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

CMOS memory normal operation

P1

pins 2 & 3 closed

 

CMOS memory clear

P1

pins 1 & 2 closed

Monitor type select color

P2

Closed

 

Monitor type select monochrome

P2

Open

DRAM CONFIGURATION

Size

Bank 0

Bank 1

1MB

(4) 256K x 9

NONE

2MB

(4) 256K x 9

(4) 256K x 9

4MB

(4) 1M x 9

NONE

5MB

(4) 256K x 9

(4) 1M x 9

5MB

(4) 1M x 9

(4) 256K x 9

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

17MB

(4) 256K x 9

(4) 4M x 9

17MB

(4) 4M x 9

(4) 256K x 9

20MB

(4) 1M x 9

(4) 4M x 9

20MB

(4) 4M x 9

(4) 1M x 9

32MB

(4) 4M x 9

(4) 4M x 9

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) 8K x 8

256KB

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

P3

P5

P7

P9

64KB

pins 2 & 3 closed

Open

Open

Open

128KB

pins 1 & 2 closed

Open

Closed

Closed

256KB

pins 2 & 3 closed

Closed

Closed

Closed

CPU TYPE CONFIGURATION

Type

P4

P25

P33

P100

80386 (PQFP)

pins 1 & 2 closed

pins 2 & 3 closed

Open

pins 2 & 3 closed

80486 (PQFP)

pins 2 & 3 closed

pins 1 & 2 closed

Closed

pins 1 & 2 closed

80486 (PGA)

pins 2 & 3 closed

pins 1 & 2 closed

Closed

pins 2 & 3 closed

CPU TYPE CONFIGURATION

Type

P12

P13

P14

80486SX

pins 2 & 3 closed

Open

Open

80487SX

pins 1 & 2 closed

pins 2 & 3 closed

Closed

80486DX

pins 1 & 2 closed

pins 1 & 2 closed

Closed

80486DX2

pins 1 & 2 closed

pins 1 & 2 closed

Closed

CPU SPEED CONFIGURATION

Speed

P30

P31

P32

P97

25MHz

Closed

Open

Closed

Open

33MHz

Closed

Closed

Open

Open

40MHz

Open

Open

Closed

Closed

50MHz

Closed

Open

Closed

Closed

50iMHz

Closed

Open

Closed

Open

66iMHz

Closed

Closed

Open

Open