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486-25UCB/486-33UCB

DIAMOND FLOWER, INC.

486-25UCB/486-33UCB

Processor

80486DX

Processor Speed

25/33MHz

Chip Set

UMC

Max. Onboard DRAM

48MB

Cache

32/64/128/256KB

BIOS

AMI

Dimensions

330mm x 220mm

I/O Options

32-bit external memory card

NPU Options

4167

CONNECTIONS

Purpose

Location

Purpose

Location

Auxiliary keyboard

J1

Speaker

J5

Reset switch

J2 and J31

Power LED & keylock

J6

Turbo LED

J3

External battery

J33

Turbo switch

J4 and J32

32-bit external memory card

S1

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

NPU enabled

J12

Closed

 

NPU disabled

J12

Open

Factory configured - do not alter

J13

pins 2 & 3 closed

Factory configured - do not alter

J18

pins 1 & 2 closed

Factory configured - do not alter

J19

Closed

Factory configured - do not alter

J20

Closed

Factory configured - do not alter

J21

Closed

Factory configured - do not alter

J22

pins 1 & 2 closed

Factory configured - do not alter

J23

pins 1 & 2 closed

Factory configured - do not alter

J24

pins 1 & 2 closed

Factory configured - do not alter

J25

pins 2 & 3 closed

Factory configured - do not alter

J26

pins 1 & 2 closed

Factory configured - do not alter

J27

pins 1 & 2 closed

Factory configured - do not alter

J28

Closed

Battery type select internal

J29

pins 2 & 3 closed

 

Battery type select external

J29

pins 1 & 2 closed

Monitor type select color

J30

Closed

 

Monitor type select monochrome

J30

Open

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

1MB

(4) 256K x 9

NONE

NONE

NONE

2MB

(4) 256K x 9

(4) 256K x 9

NONE

NONE

3MB

(4) 256K x 9

(4) 256K x 9

(4) 256K x 9

NONE

4MB

(4) 256K x 9

(4) 256K x 9

(4) 256K x 9

(4) 256K x 9

4MB

(4) 1M x 9

NONE

NONE

NONE

5MB

(4) 256K x 9

(4) 1M x 9

NONE

NONE

6MB

(4) 256K x 9

(4) 256K x 9

(4) 1M x 9

NONE

8MB

(4) 1M x 9

(4) 1M x 9

NONE

NONE

9MB

(4) 256K x 9

(4) 1M x 9

(4) 1M x 9

NONE

10MB

(4) 256K x 9

(4) 256K x 9

(4) 1M x 9

(4) 1M x 9

12MB

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

NONE

16MB

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

NONE

NONE

20MB

(4) 1M x 9

(4) 4M x 9

NONE

NONE

24MB

(4) 1M x 9

(4) 1M x 9

(4) 4M x 9

NONE

32MB

(4) 4M x 9

(4) 4M x 9

NONE

NONE

36MB

(4) 1M x 9

(4) 4M x 9

(4) 4M x 9

NONE

40MB

(4) 1M x 9

(4) 1M x 9

(4) 4M x 9

(4) 4M x 9

48MB

(4) 4M x 9

(4) 4M x 9

(4) 4M x 9

NONE

64MB

(4) 4M x 9

(4) 4M x 9

(4) 4M x 9

(4) 4M x 9

Note:Bank 3 is used when a 32-bit external memory card is installed at S1.

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

32KB

(4) 8K x 8

NONE

(4) 16K x 4

64KB

(4) 8K x 8

(4) 8K x 8

(4) 16K x 4

128KB

(4) 32K x 8

NONE

(4) 16K x 4

256KB

(4) 32K x 8

(4) 32K x 8

(4) 16K x 4

CACHE JUMPER CONFIGURATION

Size

J8

J9

J10

J11

J12

32KB

1 & 2

1 & 2

1 & 2

Open

2 & 3

64KB

2 & 3

1 & 2

1 & 2

Open

1 & 2

128KB

2 & 3

2 & 3

1 & 2

1 & 2

2 & 3

256KB

2 & 3

2 & 3

2 & 3

2 & 3

1 & 2

Note: Pins designated should be in the closed position.