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V-12

ACER, INC.

V-12

Processor

80486SX/80486DX/80486DX2

Processor Speed

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

Chip Set

Unidentified

Video Chip Set

None

Maximum Onboard Memory

128MB

Maximum Video Memory

None

Cache

128/256KB

BIOS

Unidentified

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

Green PC connector

JP12 pins 15 - 17

Power LED & keylock

JP12 pins 1 - 5

Reset switch

JP12 pins 19 & 20

Speaker

JP12 pins 7 - 10

Chassis fan power

JP30

Green PC LED

JP12 pins 12 & 13

32-bit VESA local bus slots

SL1 - SL3

USER CONFIGURABLE SETTINGS

Function

Label

Position

Factory configured - do not alter

JP4

Unidentified

CMOS memory normal operation

JP5

Open

 

CMOS memory clear

JP5

Pins 2 & 3 closed

Factory configured - do not alter

JP7

Unidentified

Factory configured - do not alter

JP8

Unidentified

Factory configured - do not alter

JP10

Unidentified

Factory configured - do not alter

JP36

Unidentified

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

4MB

None

(4) 1M x 9

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

Note: The location of banks 0 & 1 are unidentified.

CACHE CONFIGURATION

Size

Bank 0

Bank 1

128KB

(4) 32K x 8

None

256KB

(4) 32K x 8

(4) 32K x 8

Note: The location of banks 0 & 1 are unidentified.

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 SELECTION

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

VL BUS SPEED SELECTION

Speed

JP14

<= 33MHz

Pins 1 & 2 closed

>33 MHz

Pins 3 & 4 closed