HwMuseum | Index

DIAMOND FLOWER, INC.

486-OCV PLUS

Processor

80486SX/80486DX/80486DX2/Pentium Overdrive

Processor Speed

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

Chip Set

Opti

Max. Onboard DRAM

64MB

Cache

64/128/256KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

32-bit VESA local bus slots (2)

CONNECTIONS

Purpose

Location

Purpose

Location

Diagnostic LCD port

J1

Turbo switch

J7

Keyboard connector

J2

Reset switch

J8

Speaker

J3

PS/2 mouse port

J9

Power LED & keylock

J4

External battery

J10

Turbo LED

J5

32-bit VESA Local bus slots

SL1, SL2

Reset switch

J6

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

CMOS memory normal operation (External Battery)

J11

pins 1,2,3 open

 

CMOS memory normal operation (Internal Battery)

J11

pins 1 & 2 closed

 

CMOS memory clear

J11

pins 2 & 3 closed

»

Factory configured - do not alter

JP13

Open

»

Factory configured - do not alter

JP14

Closed

»

Factory configured - do not alter

JP26

pins 1 & 2 closed

»

Monitor type select color

JP29

Closed

 

Monitor type select monochrome

JP29

Open

»

Factory configured - do not alter

JP31

pins 1 & 2 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

2MB

(1) 512K x 36

NONE

NONE

NONE

4MB

(1) 1M x 36

NONE

NONE

NONE

5MB

(1) 256K x 36

(1) 1M x 36

NONE

NONE

6MB

(1) 2M x 36

(1) 256K x 36

(1) 1M x 36

NONE

6MB

(1) 512K x 36

NONE

(1) 1M x 36

NONE

8MB

(1) 1M x 36

(1) 1M x 36

NONE

NONE

8MB

(4) 2M x 36

NONE

NONE

NONE

9MB

(1) 1M x 36

(1) 1M x 36

(1) 256K x 36

NONE

9MB

(4) 2M x 36

NONE

(1) 256K x 36

NONE

12MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

NONE

12MB

(4) 2M x 36

NONE

(1) 1M x 36

NONE

13MB

(1) 256K x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

13MB

(1) 256K x 36

(1) 1M x 36

(1) 2M x 36

NONE

16MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

16MB

(4) 4M x 36

NONE

NONE

NONE

16MB

(4) 2M x 36

NONE

(1) 2M x 36

NONE

18MB

(1) 256K x 36

(1) 256K x 36

(1) 4M x 36

NONE

18MB

(1) 512K x 36

NONE

(1) 4M x 36

NONE

20MB

(1) 1M x 36

(1) 4M x 36

NONE

NONE

20MB

(1) 4M x 36

(1) 1M x 36

NONE

NONE

24MB

(1) 1M x 36

(1) 1M x 36

(1) 4M x 36

NONE

24MB

(1) 2M x 36

NONE

(1) 4M x 36

NONE

24MB

(1) 1M x 36

(1) 4M x 36

(1) 4M x 36

NONE

24MB

(1) 4M x 36

(1) 1M x 36

(1) 4M x 36

NONE

28MB

(1) 1M x 36

(1) 1M x 36

(1) 4M x 36

(1) 1M x 36

28MB

(1) 2M x 36

NONE

(1) 4M x 36

(1) 1M x 36

28MB

(1) 1M x 36

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

28MB

(1) 1M x 36

(1) 4M x 36

(1) 2M x 36

NONE

28MB

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

28MB

(1) 4M x 36

(1) 1M x 36

(4) 2M x 36

NONE

32MB

(1) 4M x 36

(1) 4M x 36

NONE

NONE

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

32MB

(1) 8M x 36

NONE

NONE

NONE

34MB

(1) 256K x 236

(1) 256K x 236

(1) 4M x 36

(1) 4M x 36

34MB

(1) 512K x 36

NONE

(1) 8M x 36

NONE

36MB

(1) 1M x 36

(1) 4M x 36

(1) 4M x 36

NONE

36MB

(1) 4M x 36

(1) 1M x 36

(1) 4M x 36

NONE

36MB

(1) 4M x 36

(1) 4M x 36

(1) 1M x 36

NONE

36MB

(1) 8M x 36

NONE

(1) 1M x 36

NONE

40MB

(1) 1M x 36

(1) 1M x 36

(1) 4M x 36

(1) 4M x 36

40MB

(4) 2M x 36

NONE

(1) 8M x 36

NONE

40MB

(1) 1M x 36

(1) 4M x 36

(1) 4M x 36

(1) 1M x 36

40MB

(1) 4M x 36

(1) 1M x 36

(1) 4M x 36

(1) 1M x 36

40MB

(1) 4M x 36

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

40MB

(1) 8M x 36

NONE

(1) 2M x 36

NONE

48MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

NONE

48MB

(1) 8M x 36

NONE

(1) 4M x 36

NONE

52MB

(1) 1M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

52MB

(1) 1M x 36

(1) 4M x 36

(1) 8M x 36

NONE

52MB

(1) 4M x 36

(1) 1M x 36

(1) 4M x 36

(1) 4M x 36

52MB

(1) 4M x 36

(1) 1M x 36

(1) 8M x 36

NONE

52MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 1M x 36

52MB

(4) 8M x 36

NONE

(1) 4M x 36

(1) 1M x 36

64MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

64MB

(1) 8M x 36

NONE

(1) 8M x 36

NONE

CPU SPEED SELECTION

Speed

JP12

JP25

25MHz

Open

pins 2 & 3 closed

33MHz

Closed

pins 2 & 3 closed

50iMHz

Open

pins 1 & 2 closed

50MHz

Open

pins 2 & 3 closed

66iMHz

Closed

pins 2 & 3 closed

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

64KB

(4) 8K x 8

(4) 8K x 8

8K x 8

128KB

(4) 32K x 8

NONE

8K x 8

256KB

(4) 32K x 8

(4) 32K x 8

16K x 8 or 32K x 8

CACHE JUMPER CONFIGURATION

Size

JP6

JP7

JP8

JP9

64KB

Open

Open

pins 2 & 3 closed

pins 2 & 3 closed

128KB

Closed

Open

pins 1 & 2 closed

pins 1 & 2 closed

256KB

Closed

Closed

pins 2 & 3 closed

pins 2 & 3 closed

VESA WAIT STATE/BUS SPEED CONFIGURATION

CPU speed

Wait states

JP23

JP24

< 33MHz

0 wait states

Open

Open

> 33MHz

1 wait state

Closed

Closed

VESA CONFIGURATION

Function

JP18

JP34

No delay

pins 2 & 3 closed

pins 2 & 3 closed

Delay 1 PLCK

pins 1 & 2 closed

pins 1 & 2,3 & 4 closed

Note:If using a 80486DX 50mhz CPU, the recommended setting is for delay 1 PLCK.