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ECA 34M33

EFA CORPORATION

ECA 34M33

Processor

80386DX/80486SX/80486DX

Processor Speed

16/20/25/33/40/50MHz

Chip Set

UMC

Max. Onboard DRAM

32MB

Cache

64/128/256KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

None

NPU Options

4167

CONNECTIONS

Purpose

Location

Purpose

Location

Power LED & keylock

J1

Turbo LED

J4

Speaker

J2

Turbo switch

J5

Reset switch

J3

External battery

J17

USER CONFIGURABLE SETTINGS

Function

Jumper/Switch

Position

Monitor type select color

J16

Open

 

Monitor type select monochrome

J16

Closed

Factory configured - do not alter

J21

N/A

BIOS type select 27512

J22

pins 2 & 3 closed

 

BIOS type select 271024

J22

pins 1 & 2 closed

CPU type select 80486DX

J23

pins 2 & 3 closed

 

CPU type select 80486SX

J23

pins 1 & 2 closed

 

CPU type select 80386DX

J23

Open

Factory configured - do not alter

S2/5

N/A

Factory configured - do not alter

S2/8

N/A

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

5MB

(4) 256K x 9

(4) 1M x 9

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

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG (U22)

TAG (U24)

64KB

(4) 8K x 8

(4) 8K x 8

(1) 32K x 8

(1) 16K x 4

128KB

(4) 32K x 8

NONE

(1) 32K x 8

(1) 16K x 4

256KB

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

(1) 16K x 4

CACHE JUMPER CONFIGURATION

Size

J7

J8

J9

J10

J11

J12

J13

J14

J15

64KB

2 & 3

2 & 3

Open

Open

Open

Open

Closed

1 & 2

Open

128KB

1 & 2

2 & 3

Open

Closed

Open

Closed

Closed

2 & 3

1 & 2

256KB

1 & 2

1 & 2

Closed

Closed

Closed

Closed

Closed

1 & 2

2 & 3

Note:Pins designated should be in the closed position.

CPU TYPE CONFIGURATION (A)

Type

S3/1

S3/2

S3/3

S3/4

80386DX-16

Off

Off

On

On

80386DX-20

Off

Off

On

Off

80386DX-33

On

On

Off

On

80386DX-40

On

On

On

On

80486SX-20

On

Off

On

Off

80486DX-25

On

Off

Off

Off

80486DX-33

On

Off

Off

On

80486DX-50

Off

On

Off

Off

Note: All CPU configurations (Tables A, B & Jumper J23) must be set for proper operation.

CPU TYPE CONFIGURATION (B)

Type

S1/1

S1/2

S1/3

S1/4

S2/1

80386DX

On

On

Off

Off

On

80486SX

Off

Off

On

On

Off

80486DX

On

On

Off

Off

Off

CPU TYPE CONFIGURATION (B CONT)

Type

S2/2

S2/3

S2/4

S2/6

S2/7

80386DX

On

On

On

Off

Off

80486SX

Off

Off

Off

On

On

80486DX

Off

Off

Off

On

On