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PI1

ACER, INC.

PI1

Processor

CX M1/Pentium

Processor Speed

75/90/100MHz

Chip Set

Unidentified

Video Chip Set

Cirrus Logic

Maximum Onboard Memory

128MB

Maximum Video Memory

2MB

Cache

256KB

BIOS

Unidentified

Dimensions

330mm x 218mm

I/O Options

Floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2), feature connector, VGA port, riser slot

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Feature connector

CN1

IDE interface 1

CN9

PS/2 mouse port

CN2

Front panel LEDs

J1

Serial port 1

CN3

Front panel LEDs

J2

Serial port 2

CN4

IDE interface LED

J3

Parallel port

CN5

IDE interface LED

J4

VGA port

CN6

Green PC connector/reset switch

JP15

Floppy drive interface

CN7

Riser slot

SL1

IDE interface 2

CN8

 

 

USER CONFIGURABLE SETTINGS

Function

Label

Position

BIOS type select OEM BIOS installed

JP1

Pins 2 & 3 closed

 

BIOS type select RESERVED BIOS

JP1

Pins 1 & 2 closed

Password disabled

JP2

Pins 2 & 3 closed

 

Password enabled

JP2

Pins 1 & 2 closed

BIOS type select flash BIOS

JP3

Pins 1 & 2 closed

 

BIOS type select EPROM

JP3

Pins 2 & 3 closed

On board SMC665 enabled

JP6

Pins 2 & 3 closed

 

On board SMC665 disabled

JP6

Pins 1 & 2 closed

On board GD5434 enabled

JP7

Pins 2 & 3 closed

 

On board GD5434 disabled

JP7

Pins 1 & 2 closed

IDE interface enabled

JP9

Pins 2 & 3 closed

 

IDE interface disabled

JP9

Pins 1 & 2 closed

ADS# not delayed

JP11

Pins 1 & 2 closed

 

ADS# delayed by one CPU clock

JP11

Pins 2 & 3 closed

Reset switch used as reset switch

JP15

Pins 2 & 3 closed

 

Reset switch used as green PC connector

JP15

Pins 1 & 2 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

8MB

(2) 1M x 36

None

16MB

None

(2) 2M x 36

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

DRAM CONFIGURATION (CON'T)

Size

Bank 0

Bank 1

48MB

(2) 2M x 36

(2) 4M x 36

64MB

(2) 8M x 36

None

64MB

(2) 4M x 36

(2) 4M x 36

72MB

(2) 1M x 36

(2) 8M x 36

80MB

(2) 8M x 36

(2) 2M x 36

96MB

(2) 4M x 36

(2) 8M x 36

128MB

(2) 8M x 36

(2) 8M x 36

Note: Banks are interchangeable.

CACHE CONFIGURATION

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

VIDEO MEMORY CONFIGURATION

Size

Bank 0

Bank 1

1MB

1MB

None

2MB

1MB

(2) 256K x 16

Note: Bank 0 is factory installed and is not configurable.

CPU SPEED SELECTION

CPU speed

Clock speed

JP8

75MHz

50MHz

Pins 1 & 4 closed

90MHz

60MHz

Pins 2 & 5 closed

100MHz

66MHz

Pins 3 & 6 closed

CPU TYPE SELECTION

Type

JP12

Cyrix

Pins 2 & 3 closed

Intel

Pins 1 & 2 closed

CPU VOLTAGE SELECTION

Voltage

JP13

3.3825v

Pins 1 & 2 closed

3.5250v

Pins 2 & 3 closed

CPU CORE CLOCK RATIO SELECTION

Ratio

JP14

3/2

Pins 1 & 2 closed

2x

Pins 2 & 3 closed

DMA CHANNEL SELECTION

Channel

JP4

JP5

1

Pins 1 & 2 closed

Pins 1 & 2 closed

 

3

Pins 2 & 3 closed

Pins 2 & 3 closed