ACER, INC.

V433S

Processor

CX486S/80486SX/80486DX/80486DX2

Processor Speed

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

Chip Set

SIS

Max. Onboard DRAM

32MB

Cache

128/256KB

BIOS

AMI

Dimensions

254mm x 220mm

I/O Options

32-bit VESA local bus slots (2)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Power LED & keylock

JP2 (pins 1 - 5)

Turbo switch

JP2 (pins 15 - 17)

Speaker

JP2 (pins 6 - 10)

Reset switch

JP2 (pins 19 - 20)

Turbo LED

JP2 (pins 12 - 13)

32-bit VESA local bus slots

SL1 & SL2

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

CMOS memory normal operation

J1

Open

 

CMOS memory clear

J1

pins 2 & 3 closed

»

Fast A20 select CMOS configuration

JP20

pins 2 & 3 closed

 

Fast A20 select keyboard

JP20

pins 1 & 2 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

8MB

(4) 2M x 9

NONE

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

128KB

(4) 32K x 8

NONE

(1) 8K x 8

256KB

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

JP9

JP10

128KB

pins 1 & 2 closed

pins 1 & 2 closed

256KB

pins 2 & 3 closed

pins 2 & 3 closed

CPU SPEED CONFIGURATION

Speed

JP7

25MHz

pins 5 & 6 closed

33MHz

pins 1 & 2 closed

40MHz

pins 1 & 2, 3 & 4 closed

50iMHz

pins 5 & 6 closed

50MHz

pins 3 & 4 closed

66iMHz

pins 1 & 2 closed