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V12C Motherboard Settings and Configuration






ACER, INC.

V12C

Processor

Pentium

Processor Speed

60MHz

Chip Set

Intel

Video Chip Set

None

Maximum Onboard Memory

128MB

Maximum Video Memory

None

Cache

256KB

BIOS

Acer

Dimensions

330mm x 218mm

I/O Options

32-bit PCI slots (3), floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial ports (2)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

ID3P Power LED & keylock

C03 pins 1 - 4

Parallel port

CN3

ID3P Reset switch

C03 pins 7 & 8

Floppy drive interface

CN4

Power LED & keylock

C04 pins 1 - 5

IDE interface

CN5

Speaker

C04 pins 7 - 10

PS/2 mouse port

CN7

Turbo LED

C04 pins 12 & 13

IDE interface LED

J1

Turbo switch

C04 pins 15 - 17

Chassis fan power

J2

Reset switch

C04 pins 19 & 20

Keyboard & PS/2 mouse connector

J3

Serial port 1

CN1

32-bit PCI slots

PC1 - PC3

Serial port 2

CN2

   

USER CONFIGURABLE SETTINGS

Function

Label

Position

»

Factory configured - do not alter

CN6

Pins 1 & 3, 2 & 4 closed

 

MIO CTLR enabled

JP4

Pins 1 & 2 closed

 

MIO CTLR disabled

JP4

Pins 2 & 3 closed

 

BIOS type select Acer

JP5

Pins 1 & 2 closed

 

BIOS type select OEM

JP5

Pins 2 & 3 closed

 

Password disabled

JP6

Pins 2 & 3 closed

 

Password enabled

JP6

Pins 1 & 2 closed

 

PS/2 mouse IRQ12 enabled

JP9

Closed

 

PS/2 mouse IRQ12 disabled

JP9

Open

 

ECP mode enabled

JP10

Closed

 

ECP mode disabled

JP10

Open

»

Factory configured - do not alter

JP13

Pins 2 & 3 closed

»

Factory configured - do not alter

JP14

Pins 2 & 3 closed

»

Factory configured - do not alter

JP15

Pins 1 & 2 closed

»

Factory configured - do not alter

JP16

Pins 2 & 3 closed

»

Factory configured - do not alter

JP17

Pins 1 & 2 closed

»

P54C pipeline enabled

JP21

Closed

 

P54C pipeline disabled

JP21

Open

»

Cache type select write back

JP22

Closed

 

Cache type select write through

JP22

Open

»

Keylock disabled

JP23

Closed

 

Keylock enabled

JP23

Open

DRAM CONFIGURATION

Size

Bank 0

Bank 1

8MB

(2) 1M x 36

None

16MB

(2) 2M x 36

None

16MB

(2) 1M x 36

(2) 1M x 36

24MB

(2) 2M x 36

(2) 1M x 36

32MB

(2) 4M x 36

None

32MB

(2) 2M x 36

(2) 2M x 36

40MB

(2) 4M x 36

(2) 1M x 36

48MB

(2) 4M x 36

(2) 2M x 36

64MB

(2) 8M x 36

None

64MB

(2) 4M x 36

(2) 4M x 36

72MB

(2) 8M x 36

(2) 1M x 36

80MB

(2) 8M x 36

(2) 2M x 36

96MB

(2) 8M x 36

(2) 4M x 36

128MB

(2) 8M x 36

(2) 8M x 36

CACHE CONFIGURATION

Note: 256KB cache is factory installed and is not configurable.

CPU SPEED SELECTION

Speed

JP18

60MHz

Pins 1 & 2 closed

CPU MULTIPLIER SELECTION

Multiplier

JP24

1.5x

Pins 1 & 2 closed

2x

Pins 2 & 3 closed

DMA CHANNEL SELECTION

Channel

JP8

JP12

1

Pins 2 & 3 closed

Pins 2 & 3 closed

3

Pins 1 & 2 closed

Pins 1 & 2 closed








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