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





DC 486 EISA

DASH COMPUTER, INC.

DC 486 EISA

Processor

80486SX/80487SX/80486DX/80486DX2

Processor Speed

20/25/33/50(internal)/50/66(internal)MHz

Chip Set

OPTI

Max. Onboard DRAM

128MB

Cache

64/128/256KB

BIOS

AMI

Dimensions

330.2mm x 218.4mm

I/O Options

None

NPU Options

4167

CONNECTIONS

Purpose

Location

Purpose

Location

Speaker

J4

Reset switch

S9

Power LED & keylock

J5

Turbo switch

SW

Turbo LED

LED

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Monitor type select color

JP4

closed

 

Monitor type select monochrome

JP4

open

CPU speed select 25/33/50MHz

JP6

open

 

CPU speed select 20MHz

JP6

closed

CPU speed select iOSC/1

JP8

pins 1 & 2 closed

 

CPU speed select iOSC/2

JP8

pins 2 & 3 closed

EISA BUS CONTROLLER SPEED SELECT

Speed

JP1

JP2

JP3

20MHz

open

closed

pins 2 & 3 closed

25MHz

open

open

pins 1 & 2 closed

33MHz

closed

open

pins 1 & 2 closed

40MHz

open

closed

pins 1 & 2 closed

50Mhz

closed

closed

pins 1 & 2 closed

CPU TYPE CONFIGURATION

Jumper

80486SX

80487SX

80486DX or DX2

JP7

pins 2 & 3 closed

pins 1 & 2 and 3 & 4 closed

pins 1 & 2 and 3 & 4 closed

JP9

open

pins 1 & 2 closed

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

68MB

(4) 1M x 9

(4) 16M x 9

80MB

(4) 4M x 9

(4) 16M x 9

128MB

(4) 16M x 9

(4) 16M x 9

CACHE JUMPER CONFIGURATION

Jumper

64KB

128KB

256KB

JP5

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

JP10

open

open

open

JP11

open

open

closed

JP12

open

closed

closed

JP13

open

open

closed

JP14

open

closed

closed

JP15

open

open

open

CACHE CONFIGURATION

Size

Cache

Location

TAG (U49)

TAG (U50)

TAG (U51)

Dirty bit (U64)

64KB

(8) 8K x 8

Banks 0 & 1

(1) 4K x 1

(1) 8K x 8

NONE

(1) 64K x 1

128KB

(4) 32K x 8

Bank 0

(1) 64K x 1

(1) 8K x 8

NONE

(1) 64K x 1

256KB

(8) 32K x 8

Banks 0 & 1

(1) 64K x 1

(1) 8K x 8

(1) 8K x 8

(1) 64K x 1