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DRAGON EISA 486

OCEAN INFORMATION SYSTEMS, INC.

DRAGON EISA 486

Processor

80486DX

Processor Speed

50MHz

Chip Set

OPTI

Max. onboard DRAM

128MB

SRAM Cache

64/128/256/512KB

BIOS

AMI

Dimensions

330mm x 215mm

I/O Options

None

NPU Options

4167

CONNECTIONS

Purpose

Location

Purpose

Location

Speaker

J4

Reset switch

S9

Power LED & keylock

J5

CPU heatsink fan (+5VDC)

JP22

Note:The location of JP22 is unknown and may be labeled JP17 on the board.

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Factory configured - do not alter

JP1

Closed

Factory configured - do not alter

JP2

Closed

Factory configured - do not alter

JP3

pins 1 & 2 closed

Monitor type select color

JP4

Closed

 

Monitor type select monochrome

JP4

Open

Factory configured - do not alter

JP6

Open

Factory configured - do not alter

JP7

pins 1 & 2 and 3 & 4 closed

Factory configured - do not alter

JP8

pins 1 & 2 closed

Factory configured - do not alter

JP9

pins 2 & 3 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

4MB

(4) 1M x 9

NONE

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

20MB

(4) 1M x 9

(4) 4M x 9

32MB

(4) 4M x 9

(4) 4M x 9

64MB

(4) 16M x 9

NONE

128MB

(4) 16M x 9

(4) 16M x 9

SRAM CONFIGURATION

Size

Bank 0

Bank 1

Dirty (U49)

TAG (U50)

TAG (U51)

TAG (U64)

64KB

(4) 8K x 8

(4) 8K x 8

(1) 16K x 1

(1) 8K x 8

None

(1) 16K x 1 or 64K x 1

128KB

(4) 32K x 8

NONE

(1) 16K x 1

(1) 8K x 8

None

(1) 16K x 1 or 64K x 1

256KB

(4) 32K x 8

(4) 32K x 8

(1) 16K x 1

(1) 8K x 8

(1) 8K x 8

(1) 16K x 1 or 64K x 1

512KB

(4) 128K x 8

NONE

(1) 16K x 1

(1) 32K x 8

None

(1) 64K x 1

SRAM JUMPER CONFIGURATION

Jumper

64KB

128KB

256KB

512KB

JP5

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

pins 1 & 2 closed

JP10

Open

Open

Open

Closed

JP11

Open

Open

Closed

Closed

JP12

Open

Closed

Closed

Closed

JP13

Open

Open

Closed

Closed

JP14

Open

Closed

Closed

Closed

JP15

Open

Open

Open

Closed