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CMPD4700ZIF

ACER, INC.

CMPD4700ZIF

Processor

80486DX/80486DX2

Processor Speed

20/25/33/40/50(internal)/50/66(internal)MHz

Chip Set

Unidentified

Video Chip Set

None

Maximum Onboard Memory

32MB

Maximum Video Memory

None

Cache

64/128/256KB

BIOS

Unidentified

Dimensions

254mm x 218mm

I/O Options

32-bit VESA local bus slot, serial ports (2), game interface, parallel port, floppy drive interface, IDE interface

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

J2

Speaker

J11

Serial port 2

J4

Reset switch

J12

Serial port 1

J5

IDE interface LED

J13

Game interface

J6

Turbo switch

J14

Parallel port

J7

Turbo LED

J15

Floppy drive interface

J8

Power LED & keylock

J16

IDE interface

J9

32-bit VESA local bus slot

SL1

USER CONFIGURABLE SETTINGS

Function

Label

Position

 

Battery type select internal

W1

Closed

 

Battery type select external

W1

Open

 

Monitor type select color

W2

Closed

 

Monitor type select monochrome

W2

Open

Factory configured - do not alter

W8

Pins 2 & 3 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

5MB

(4) 256K x 9

(4) 1M x 9

5MB

(4) 1M x 9

(4) 256K x 9

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

None

17MB

(4) 256K x 9

(4) 4M x 9

17MB

(4) 4M x 9

(4) 256K x 9

20MB

(4) 1M x 9

(4) 4M x 9

20MB

(4) 4M x 9

(4) 1M x 9

32MB

(4) 4M x 9

(4) 4M x 9

CACHE CONFIGURATION

Size

Bank 0

Bank 1

64KB

(4) 8K x 8

(4) 8K x 8

128KB

(4) 32K x 8

None

256KB

(4) 32K x 8

(4) 32K x 8

CACHE TAG CONFIGURATION

Size

TAG 0

TAG 1

TAG 2

64KB

None

(1) 8K x 8

(1) 64K x 1

128KB

None

(1) 8K x 8

(1) 64K x 1

256KB

(1) 8K x 8

(1) 8K x 8

(1) 64K x 1

CACHE JUMPER CONFIGURATION

Size

W4

W5

W6

W13

64KB

Pins 2 & 3 closed

Open

Open

Pins 2 & 3 closed

128KB

Pins 1 & 2 closed

Open

Closed

Pins 1 & 2 closed

256KB

Pins 2 & 3 closed

Closed

Closed

Pins 2 & 3 closed

CACHE JUMPER CONFIGURATION (CONT)

Size

W19

W20

W21

W22

64KB

Open

Open

Open

Open

128KB

Open

Open

Open

Closed

256KB

Open

Open

Closed

Closed

CPU SPEED SELECTION

Speed

W14

W15

W16

20MHz

Closed

Open

Open

25MHz

Open

Closed

Closed

33MHz

Open

Closed

Open

40MHz

Open

Open

Closed

50iMHz

Open

Closed

Closed

50MHz

Open

Closed

Closed

66iMHz

Open

Closed

Open

CPU TYPE SELECTION

Type

W3

W7

W9

W17

W18

W23

W24

80486DX

1 & 2

1 & 2

1 & 2

2 & 3

1 & 2

Open

2 & 3

80486DX-50

1 & 2

2 & 3

1 & 2

2 & 3

1 & 2

Closed

2 & 3

80486DX2

1 & 2

1 & 2

1 & 2

2 & 3

1 & 2

Open

2 & 3

Note: Pins designated should be in the closed position.

VL BUS WAIT STATE SELECTION

Setting

W11

0

Open

1

Closed

VL BUS SPEED SELECTION

Speed

W10

W12

<= 33MHz

Open

Closed

40MHz

Closed

Open

50MHz

Open

Open