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EA-6580

AMERICAN DIGITAL DATA ASSOCIATES

EA-6580

Processor

80486SX/80487SX/80486DX/80486DX2

Processor Speed

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

Chip Set

SIS

Max. Onboard DRAM

128MB

Cache

64/128/256/512KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

None

NPU Options

4167

CONNECTIONS

Purpose

Location

Purpose

Location

Reset switch

CN1

Speaker

CN4

Turbo LED

CN2

Power LED & keylock

CN5

Turbo switch

CN3

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

CPU speed select 33MHz

JP11

pins 2 & 3 closed

 

CPU speed select 50MHz

JP11

pins 1 & 2 closed

Monitor type select monochrome

JP12

Open

 

Monitor type select color

JP12

Closed

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) 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

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG (U47)

Dirty Bit (U32)

64KB

(4) 8K x 8

(4) 8K x 8

(1) 8K x 8

(1) 8K x 8

128KB

(4) 32K x 8

NONE

(1) 8K x 8

(1) 8K x 8

256KB

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

(1) 32K x 8

512KB

(4) 128K x 8

NONE

(1) 32K x 8

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

JP1

JP2

JP3

JP4

JP5

JP6

JP7

JP8

64KB

1 & 2

1 & 2

1 & 2

1 & 2

1 & 2

1 & 2

2 & 3

Open

128KB

2 & 3

1 & 2

1 & 2

2 & 3

1 & 2

1 & 2

1 & 2

Closed

256KB

2 & 3

2 & 3

1 & 2

2 & 3

2 & 3

1 & 2

4 & 5

Closed

512KB

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

1 & 2

Closed

Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION

Type

JP9

JP10

80486SX

pins 2 & 4 closed

Open

80487SX

pins 1 & 2, 3 & 4 closed

pins 2 & 3 closed

80486DX

pins 1 & 2, 3 & 4 closed

pins 1 & 2 closed

80486DX2

pins 1 & 2, 3 & 4 closed

pins 1 & 2 closed