Abit FU340

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ABIT COMPUTER CORPORATION

FU325/FU333/FU340

Processor

80386DX

Processor Speed

25/33/40MHz

Chip Set

C & T/Peak DM

Max. Onboard DRAM

32MB

Cache

32/64/128/256KB

BIOS

AMI/C & T

Dimensions

330mm x 218mm

I/O Options

None

NPU Options

80387/3167

File:35051-1.png

CONNECTIONS
Purpose Location Purpose Location

Turbo LED

D4

Turbo switch

J50

Speaker

J18

Reset switch

J51

Power LED & keylock

J19

External battery

JP2

USER CONFIGURABLE SETTINGS
Function Jumper Position
�

Factory configured - do not alter

J21

Open

�

Monitor type select monochrome

J23

Open

Monitor type select color

J23

Closed

�

CMOS memory normal operation

J42

pins 2 & 3 closed

CMOS memory clear

J42

pins 1 & 2 closed

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

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 Cache Location Tag (U7) Tag (U14 & U15)

32KB

(4) 8K x 8

NONE

(1) 8K x 8

NONE

64KB

(4) 8K x 8

(4) 8K x 8

NONE

(2) 16K x 4

128KB

(4) 32K x 8

NONE

(1) 32K x 8

NONE

256KB

(4) 32K x 8

(4) 32K x 8

NONE

(2) 64K x 4

CACHE JUMPER CONFIGURATION
Size J26 J27 J28 J29 J33 J34

32KB

1 & 2

Open

Open

Closed

Closed

Open

64KB

1 & 2

Closed

Open

Closed

Closed

1 & 2

128KB

2 & 3

Closed

Open

Closed

Open

1 & 2

256KB

2 & 3

Closed

Closed

Open

Open

1 & 2

Note: Pins designated should be in the closed position.

CACHE JUMPER CONFIGURATION (CON'T)
Size J35 J36 J37 J38 J39 J41 J52

32KB

2 & 3

2 & 3

2 & 3

Open

2 & 3

Open

1 & 2

64KB

Open

2 & 3

2 & 3

1 & 2

1 & 2

Open

1 & 2

128KB

Open

1 & 2

1 & 2

2 & 3

2 & 3

1 & 2

2 & 3

256KB

1 & 2

1 & 2

1 & 2

2 & 3

1 & 2

1 & 2

2 & 3

Note: Pins designated should be in the closed position.