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VI12G

ACER, INC.

VI12G

Processor

80486SX/80486DX/80486DX2

Processor Speed

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

Chip Set

Acer

Max. Onboard DRAM

128MB

Cache

128/256KB

BIOS

Award

Dimensions

254mm x 218mm

I/O Options

32-bit VESA local bus slots (3), green PC connector

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

JP6

Break switch

JP12 (pins 16-18)

Power LED & keylock

JP12 (pins 1-5)

Reset switch

JP12 (pins 19-20)

Speaker

JP12 (pins 7-10)

Chassis fan power

JP30

Green PC connector

JP12 (pins 12-13)

32-bit VESA local bus slots

SL1 - SL3

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

CMOS memory normal operation

JP5

Open

 

CMOS memory clear

JP5

pins 1 & 2 closed

Factory configured - do not alter

JP8

Open

Factory configured - do not alter

JP10

Open

DRAM CONFIGURATION

Size

Bank 0

Bank 1

1MB

(4) 256K x 9

NONE

1MB

NONE

(4) 256K x 9

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

16MB

NONE

(4) 4M x 9

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

64MB

(4) 16M x 9

NONE

65MB

(4) 16M x 9

(4) 256K x 9

68MB

(4) 16M x 9

(4) 1M x 9

80MB

(4) 16M x 9

(4) 4M x 9

128MB

(4) 16M x 9

(4) 16M x 9

CACHE CONFIGURATION

Size

Bank 0

Bank 1

128KB

(4) 32K x 8

NONE

256KB

(4) 32K x 8

(4) 32K x 8

CACHE JUMPER CONFIGURATION

Size

JP1

JP2

JP3

128KB

pins 2 & 3 closed

pins 2 & 3 closed

pins 1 & 2 closed

256KB

pins 1 & 2 closed

pins 1 & 2 closed

pins 2 & 3 closed

CPU SPEED CONFIGURATION

Speed

JP11

25MHz

pins 1 & 2, 3 & 4, 5 & 6 closed

33MHz

pins 1 & 2, 3 & 4 closed

40MHz

pins 1 & 2, 5 & 6 closed

50iMHz

pins 1 & 2, 3 & 4, 5 & 6 closed

50MHz

pins 1 & 2 closed

66iMHz

pins 1 & 2, 3 & 4 closed

BUS SPEED CONFIGURATION

CPU speed

JP14

<=33MHz

pins 1 & 2 closed

>33MHz

pins 2 & 3 closed