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





V20L-486 ALL IN ONE

ACER, INC.

V20L-486 ALL IN ONE

Processor

AM486SX/80486SX/AM486DX/80486DX/CX486DX2/AM486DX2/ 80486DX2/80486DX4/P24D/P24T

Processor Speed

25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz

Chip Set

ALI

Video Chip Set

None

Maximum Onboard Memory

Unidentified

Maximum Video Memory

None

Cache

128/256/512KB

BIOS

Unidentified

Dimensions

330mm x 218mm

I/O Options

32-bit VESA local bus slot, floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Serial port 2

CN1

Power LED & keylock

CN9/pins 1 - 4

Serial port 1

CN2

Reset switch

CN9/pins 7 & 8

Parallel port

CN3

Power LED & keylock

CN10/pins 1 - 5

Floppy drive interface

CN4

Speaker

CN10/pins 7 - 10

IDE interface 1

CN5

Turbo LED

CN10/pins 12 & 13

IDE interface 2

CN6

Turbo switch

CN10/pins 15 - 17

PS/2 mouse port

CN7

Reset switch

CN10/pins 19 & 20

IDE interface LED

CN8

32-bit VESA local bus slot

SL1

USER CONFIGURABLE SETTINGS

Function

Label

Position

Password disabled

J1

Pins 2 & 3 closed

 

Password enabled

J1

Pins 1 & 2 closed

Factory configured - do not alter (OEM BIOS enabled)

J2

Pins 2 & 3 closed

M5115 I/O enabled

J8

Pins 1 & 2 closed

 

M5115 I/O disabled

J8

Pins 2 & 3 closed

Factory configured - do not alter

J10

Unidentified

Local bus IDE I/O address select 0FXH

J11

Pins 1 & 2 closed

 

Local bus IDE I/O address select 07XH

J11

Pins 2 & 3 closed

Local bus IDE enabled

J12

Pins 2 & 3 closed

 

Local bus IDE disabled

J12

Pins 1 & 2 closed

Factory configured - do not alter

J22

Unidentified

 

Reset switch enabled

J23

Pins 1 & 2 closed

 

Reset switch disabled

J23

Pins 2 & 3 closed

 

Green PC connector enabled

J24

Pins 1 & 2 closed

 

Green PC connector disabled

J24

Pins 2 & 3 closed

 

Factory configured - do not alter

J41

Pins 2 & 3 closed

DRAM CONFIGURATION

Note: The maximum amount of memory is unidentified.

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

128KB

(4) 32K x 8

None

(1) 32K x 8

256KB

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

512KB

(4) 128K x 8

None

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

J13

J15

J16

128KB

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

256KB

Pins 2 & 3 closed

Pins 1 & 2 closed

Pins 2 & 3 closed

512KB

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

CPU SPEED SELECTION

Speed

JP17

JP21

25MHz

Pins 1 & 5 closed

Pins 2 & 3 closed

33MHz

Pins 2 & 6 closed

Pins 2 & 3 closed

40MHz

Pins 3 & 7 closed

Pins 1 & 2 closed

50iMHz

Pins 1 & 5 closed

Pins 2 & 3 closed

50MHz

Pins 4 & 8 closed

Pins 1 & 2 closed

66iMHz

Pins 2 & 6 closed

Pins 2 & 3 closed

75iMHz

Pins 1 & 5 closed

Pins 2 & 3 closed

100iMHz

Pins 2 & 6 closed

Pins 2 & 3 closed

CPU TYPE SELECTION

Type

J20

J26

J27

J33

J34

J35

J37

AM486SX

1 & 2

1 & 2

1 & 2

1 & 3

2 & 3

2 & 3

2 & 3

80486SX

1 & 2

2 & 3

2 & 3

1 & 3

2 & 3

2 & 3

2 & 3

AM486DX

1 & 2

1 & 2

1 & 2

1 & 3

2 & 3

2 & 3

2 & 3

80486DX

1 & 2

2 & 3

2 & 3

1 & 3

2 & 3

2 & 3

2 & 3

CX486DX2

1 & 2

2 & 3

Open

2 & 4

1 & 2

2 & 3

1 & 2

AM486DX2

1 & 2

1 & 2

1 & 2

1 & 3

2 & 3

2 & 3

2 & 3

80486DX2

1 & 2

2 & 3

2 & 3

1 & 3

2 & 3

2 & 3

2 & 3

80486DX4

1 & 2

2 & 3

2 & 3

1 & 3

2 & 3

2 & 3

2 & 3

P24D

2 & 3

2 & 3

2 & 3

1 & 3

2 & 3

1 & 2

2 & 3

P24T

2 & 3

2 & 3

2 & 3

1 & 3

2 & 3

1 & 2

2 & 3

Note: Pins designated should be in the closed position.