...because we can't all be on the bleeding edge...





DC3486 VESA

DASH COMPUTER, INC.

DC3486 VESA

Processor

80386DX/CX486DLC/80486SX/80486DX/80486DX2

Processor Speed

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

Chip Set

OPTI

Max. Onboard DRAM

32MB

Cache

64/128/256KB

BIOS

AMI

Dimensions

311mm x 226mm

I/O Options

32-bit VESA card slot (2)

NPU Options

80387DX

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

J1

Turbo LED

JP32

Power LED & keylock

J19

Reset switch

SW1

Speaker

J20

32-bit VESA local bus slots (2)

S1 & S2

Turbo switch

JP31

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

CMOS memory normal operation

JP1

pins 2 & 3 closed

 

CMOS memory clear

JP1

pins 1 & 2 closed

Factory configured - do not alter

JP2

open

 

AT Bus speed select CLK/5 with 80386 CPU

JP3

open

 

AT Bus speed select CLK/4 with 80386 CPU

JP3

closed

Monitor type select color

JP4

open

 

Monitor type select monochrome

JP4

closed

CACHE JUMPER CONFIGURATION

Size

JP10

JP11

JP13

JP15

64KB

pins 2 & 3 closed

open

open

open

128KB

pins 1 & 2 closed

closed

closed

open

256KB

pins 2 & 3 closed

closed

closed

closed

CACHE CONFIGURATION

Size

Cache

Location

TAG (U39)

TAG (U40)

64KB

(8) 8K x 8

Banks 0 & 1

(1) 8K x 8

NONE

128KB

(4) 32K x 8

Bank 0

(1) 8K x 8

(1) 8K x 8

256KB

(8) 32K x 8

Banks 0 & 1

(1) 8K x 8

(1) 8K x 8

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

20MB

(4) 4M x 9

(4) 1M x 9

32MB

(4) 4M x 9

(4) 4M x 9

SLOTS 3 & 4 BUS CONFIGURATION

Bus Type

JP8 & 9

JP14 & 16

JP23 & 27

JP19

JP21

JP24

VESA

open

open

pins 1 & 2

open

open

open

 

AT

closed

closed

pins 2 & 3

closed

closed

closed

Note:Slots 3 & 4 must both be configured as either 16-bit or 32-bit.

Note:Pins designated should be in the closed position.

CONFIGURATION FOR 80486DX & 80486DX2 CPU

Jumper

Postition

25MHz

33MHz

50iMHz

50MHz

66iMHz

JP5

pins 1 & 2

pins 1 & 2

pins 1 & 2

pins 1 & 2

pins 1 & 2

pins 1 & 2

JP6

open

open

open

open

open

open

JP7

open

open

open

open

open

open

JP12

closed

closed

closed

closed

closed

closed

JP17

closed

closed

closed

closed

closed

closed

JP18

open

open

open

open

open

open

JP22

N/A

open

open

open

closed

open

JP25

N/A

pins 2 & 3

pins 2 & 3

pins 2 & 3

pins 1 & 2

pins 2 & 3

JP26

N/A

open

open

open

closed

open

JP28

N/A

closed

open

closed

closed

open

JP29

N/A

open

closed

open

open

closed

JP30

N/A

open

open

open

open

open

JP33

N/A

pins 2 & 3

pins 2 & 3

pins 2 & 3

pins 1 & 2

pins 2 & 3

JP34

N/A

closed

closed

closed

closed

closed

JP35

pins 1 & 2

pins 1 & 2

pins 1 & 2

pins 1 & 2

pins 1 & 2

pins 1 & 2

JP36

closed

closed

closed

closed

closed

closed

JP37

pins 1 & 2

pins 1 & 2

pins 1 & 2

pins 1 & 2

pins 1 & 2

pins 1 & 2

Note:Pins designated should be in the closed position.

CONFIGURATION FOR 80486SX CPU

Jumper

Position

25MHz

33MHz

JP5

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

JP6

open

open

open

JP7

open

open

open

JP12

closed

closed

closed

JP17

see note 1

see note 1

see note 1

JP18

open

open

open

JP22

N/A

open

open

JP25

N/A

pins 2 & 3 closed

pins 2 & 3 closed

JP26

N/A

open

open

JP28

N/A

closed

closed

JP29

N/A

open

closed

JP30

N/A

open

open

JP33

N/A

pins 2 & 3 closed

pins 2 & 3 closed

JP34

N/A

closed

closed

JP35

open

open

open

JP36

open

open

open

JP37

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

Note 1 :Jumper JP17 should be closed when a PGA cpu is installed, open for PQFP.

CONFIGURATION FOR 80386DX & CX486DLC CPU

Jumper

Position

33MHz

40MHz

JP5

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

JP6

see note 1

see note 1

see note 1

JP7

open

open

open

JP12

open

open

open

JP17

open

open

open

JP18

see note 2

see note 2

see note 2

JP22

N/A

closed

open

JP25

N/A

pins 2 & 3 closed

pins 2 & 3 closed

JP26

N/A

open

closed

JP28

N/A

open

open

JP29

N/A

closed

open

JP30

N/A

closed

closed

JP33

N/A

pins 1 & 2 closed

pins 1 & 2 closed

JP34

N/A

open

open

JP35

open

open

open

JP36

open

open

open

JP37

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

Note 1 :Jumper JP6 should be closed when a CX486DLC is installed, open for 80386DX.

Note 2 :Jumper JP18 should be closed when a PGA cpu is installed, open for PQFP.