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ACERALTOS 900 (M7), M7

ACER, INC.

ACERALTOS 900 (M7), M7

Device Type

Mainboard

Processor

Pentium

Processor Speed

75/90/100/120/133/150/166MHz

Chip Set

Unidentified

Video Chip Set

Unidentified

Maximum Onboard Memory

192MB (EDO supported)

Maximum Video Memory

1MB

Cache

256/512KB

BIOS

Acer

Dimensions

330mm x 218mm

I/O Options

32-bit PCI slots (4), floppy drive interface, green PC connector, IDE interface, SCSI interface, Wide Ultra SCSI interface, parallel port, PS/2 mouse port, serial ports (2), VGA interface, cache slot

CONNECTIONS

Purpose

Location

Purpose

Location

Serial port 1

CN1

VGA interface

CN13

Serial port 2

CN2

Power LED & keylock

CN15

5v power

CN3

IDE interface

CN16

3.3v power

CN4

Speaker

CN17

Parallel port

CN5

Reset/turbo switch

CN18

Floppy drive interface

CN6

Chassis fan power

FA1

IDE interface LED

CN7

Chassis fan power

FA2

LED connector

CN10

PS/2 mouse port

MS1

SCSI-2 interface

CN11

32-bit PCI slots

PC1 - PC4

Wide SCSI interface

CN12

Cache slot

SL1

USER CONFIGURABLE SETTINGS

Function

Label

Position

Factory configured - do not alter

CN8

Unidentified

Factory configured - do not alter

CN9

Unidentified

Termination switchable through SCSI select utility

JP2

Pins 2 & 3 closed

 

Termination enabled

JP2

Pins 1 & 2 closed

SCSI select 16-bit

JP6

Pins 1 & 2 closed

 

SCSI select 8-bit

JP6

Pins 2 & 3 closed

BIOS type select Acer

JP8

Pins 1 & 2 closed

 

BIOS type select OEM

JP8

Pins 2 & 3 closed

Password disabled

JP9

Pins 2 & 3 closed

 

Password enabled

JP9

Pins 1 & 2 closed

Buzzer enabled

JP10

Pins 1 & 2 closed

 

External speaker enabled

JP10

Pins 2 & 3 closed

Front panel reset enabled

JP11

Pins 1 & 2 closed

 

Front panel reset disabled

JP11

Pins 2 & 3 closed

Factory configured - do not alter

JP12

Pins 2 & 3 closed

SIMM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

8MB

(2) 1M x 36

None

None

16MB

(2) 1M x 36

(2) 1M x 36

None

16MB

(2) 2M x 36

None

None

24MB

(2) 2M x 36

(2) 1M x 36

None

24MB

(2) 1M x 36

(2) 1M x 36

(2) 1M x 36

32MB

(2) 4M x 36

None

None

32MB

(2) 2M x 36

(2) 2M x 36

None

40MB

(2) 4M x 36

(2) 1M x 36

None

48MB

(2) 4M x 36

(2) 2M x 36

None

SIMM CONFIGURATION (CON'T)

Size

Bank 0

Bank 1

Bank 2

48MB

(2) 4M x 36

(2) 1M x 36

(2) 1M x 36

56MB

(2) 4M x 36

(2) 2M x 36

(2) 1M x 36

64MB

(2) 8M x 36

None

None

64MB

(2) 4M x 36

(2) 4M x 36

None

80MB

(2) 8M x 36

(2) 2M x 36

None

80MB

(2) 8M x 36

(2) 1M x 36

(2) 1M x 36

88MB

(2) 8M x 36

(2) 2M x 36

(2) 1M x 36

96MB

(2) 8M x 36

(2) 4M x 36

None

96MB

(2) 4M x 36

(2) 4M x 36

(2) 4M x 36

96MB

(2) 8M x 36

(2) 2M x 36

(2) 2M x 36

104MB

(2) 8M x 36

(2) 4M x 36

(2) 1M x 36

112MB

(2) 8M x 36

(2) 4M x 36

(2) 2M x 36

128MB

(2) 8M x 36

(2) 4M x 36

(2) 4M x 36

128MB

(2) 16M x 36

None

None

128MB

(2) 8M x 36

(2) 8M x 36

None

136MB

(2) 8M x 36

(2) 8M x 36

(2) 1M x 36

136MB

(2) 16M x 36

(2) 1M x 36

None

144MB

(2) 16M x 36

(2) 2M x 36

None

144MB

(2) 16M x 36

(2) 1M x 36

(2) 1M x 36

152MB

(2) 16M x 36

(2) 2M x 36

(2) 1M x 36

160MB

(2) 16M x 36

(2) 4M x 36

None

160MB

(2) 16M x 36

(2) 2M x 36

(2) 2M x 36

168MB

(2) 16M x 36

(2) 4M x 36

(2) 1M x 36

176MB

(2) 16M x 36

(2) 4M x 36

(2) 2M x 36

192MB

(2) 16M x 36

(2) 8M x 36

None

192MB

(2) 16M x 36

(2) 4M x 36

(2) 4M x 36

Note: Board accepts EDO memory.

CACHE CONFIGURATION

Size

SL1

256KB

256KB module installed

512KB

512KB module installed

CACHE JUMPER CONFIGURATION

Size

JP3

256KB

Pins 1 & 2 closed

512KB

Pins 2 & 3 closed

VIDEO MEMORY CONFIGURATION

Size

Bank 0

Bank 1

512KB

512KB

None

1MB

512KB

512KB

CPU SPEED SELECTION

CPU speed

Clock speed

Multiplier

JP4

JP5

JP7

75MHz

50MHz

1.5x

2 & 3

2 & 3

1 & 2

90MHz

60MHz

1.5x

2 & 3

2 & 3

2 & 3

100MHz

66MHz

1.5x

2 & 3

2 & 3

3 & 4

120MHz

60MHz

2x

2 & 3

1 & 2

2 & 3

133MHz

66MHz

2x

2 & 3

1 & 2

3 & 4

150MHz

60MHz

2.5x

1 & 2

1 & 2

2 & 3

166MHz

66MHz

2.5x

1 & 2

1 & 2

3 & 4

Note: Pins designated should be in the closed position.

CPU TYPE SELECTION

Type

JP13

JP14

JP15

JP16

P54C

Open

Closed

Closed

1 & 2, 3 & 4, 8 & 9, 10 & 11

Note: Pins designated should be in the closed position.

CPU VOLTAGE SELECTION

Voltage

JP1

 

VR

Pins 1 & 2 closed

VRE

Pins 2 & 3 closed