Device Type

Mainboard

Processor

80386DX/CX486DLC/80486SX/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

Unidentified

Dimensions

254mm x 218mm

I/O Options

32-bit VESA local bus slots (2)

NPU Options

80387DX

CONNECTIONS

Purpose

Location

Purpose

Location

Power LED & keylock

J2

External battery

J7

Turbo switch

J4

Speaker

J100

Turbo LED

J5

32-bit VESA Local bus slot

S1

Reset switch

J6

32-bit VESA Local bus slot

S2

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

Monitor type select color

J3

Closed

Monitor type select monochrome

J3

Open

»

CMOS memory normal operation (Internal battery)

JMP3

Pins 2 & 3 closed

»

CMOS memory normal operation (External battery)

JMP3

Pins 1 & 2 closed

CMOS memory clear

JMP3

Pins 2 & 4 closed

»

NPU enabled

JMP4

Pins 2 & 3 closed

NPU disabled

JMP4

Pins 1 & 2 closed

»

Factory configured - do not alter

JMP7

Closed

»

Factory configured - do not alter

JMP13

Pins 1 & 2 closed

VESA BUS SELECTION

Function

JMP6

JMP14

JMP15

466-50MHz VESA local bus enabled

Open

1 & 2

1 & 2

All other VESA local busses enabled

Closed

2 & 3

2 & 3

Note: Pins designated should be in the closed position.

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) 1M x 9

(4) 256K x 9

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

None

32MB

(4) 4M x 9

(4) 4M x 9

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG/U26

TAG/U27

64KB

(4) 8K x 8

(4) 8K x 8

(1) 8K x 8

(1) 8K x 8

128KB

(4) 32K x 8

NONE

(1) 8K x 8

(1) 8K x 8

256KB

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

JMP1A

JMP1B

JMP1C

JMP8

64KB

1 & 2

1 & 2

1 & 2

1 & 2, 4 & 5

128KB

2 & 3

1 & 2

2 & 3

2 & 3, 4 & 5

256KB

2 & 3

2 & 3

2 & 3

2 & 3, 5 & 6

Note:Pins designated should be in the closed position.

CPU TYPE CONFIGURATION

Type

JMP2

JMP5

80386DX

2 & 3

Closed

CX486DLC

Open

Open

80486SX

1 & 2

Open

80486DX

2 & 3

Open

80486DX2

2 & 3

Open

Note:Pins designated should be in the closed position.

CPU SPEED CONFIGURATION

Speed

JMP9

80386DX/25MHz

Pins 1 & 5 and 2 & 6 closed

80386DX/33MHz

Pins 1 & 5 and 4 & 8 closed

80386DX/40MHz

Pins 1 & 5, 3 & 7 and 4 & 8 closed

CX486DLC-33

Pins 1 & 5 and 4 & 8 closed

CX486DLC-40

Pins 1 & 5, 3 & 7 and 4 & 8 closed

80486SX-33

Pins 4 & 8 closed

80486DX/50MHz

Pins 3 & 7 closed

80486DX/25MHz

Pins 2 & 6 closed

80486DX/33MHz

Pins 4 & 8 closed

80486DX2/50i MHz

Pins 2 & 6 closed

80486DX2/66i MHz

Pins 4 & 8 closed