ACERALTOS 900 PRO (M11A), M11A Motherboard Settings and Configuration

ACER, INC.

ACERALTOS 900 PRO (M11A), M11A

Device Type
Mainboard
Processor
Pentium Pro
Processor Speed
180/200MHz
Chip Set
Unidentified
Maximum Onboard Memory
384MB (EDO supported)
Cache
256/512KB (located on Pentium Pro CPU)
Dimensions
330mm x 218mm
I/O Options
32-bit PCI slots (4), floppy drive interface, IDE interfaces (2), SCSI interface, Wide Ultra SCSI interface, parallel port, PS/2 mouse port, serial ports (2), VRM connector

CONNECTIONS
Purpose
Location
Purpose
Location
Serial port 1
CN1
Power LED & keylock
CN16
Serial port 2
CN2
Reset switch/RDM cable connector
CN17
Parallel port
CN3
IDE interface LED
CN18
Floppy drive interface
CN5
CPU fan power
FA1
IDE interface 1
CN6
VRM connector
J7
IDE interface 2
CN7
Wide SCSI interface
J8
RDM connector
CN8
SCSI interface
J12
RDM connector
CN9
PS/2 mouse port
MS1
Speaker
CN15
32-bit PCI slots
PC1 - PC4

USER CONFIGURABLE SETTINGS
Function
Label
Position
»
Factory configured - do not alter
CN10
Unidentified
»
Factory configured - do not alter
CN11
Unidentified
»
Factory configured - do not alter
CN12
Unidentified
»
Factory configured - do not alter
CNN1
Unidentified
»
Factory configured - do not alter
FA2
Unidentified
»
Factory configured - do not alter
FA3
Unidentified
»
Factory configured - do not alter
FA4
Unidentified
»
BIOS type select Acer
J4
Pins 1 & 2 closed

BIOS type select OEM
J4
Pins 2 & 3 closed
»
Password enabled
J5
Pins 1 & 2 closed

Password disabled
J5
Pins 2 & 3 closed
»
SCSI type select wide
J6
Closed

SCSI type select narrow
J6
Open
»
Buzzer enabled
J13
Pins 1 & 2 closed

External speaker enabled
J13
Pins 2 & 3 closed
»
Reset switch enabled
JMP1
Pins 1 & 2 closed

Reset switch disabled, Green PC enabled
JMP1
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

SIMM CONFIGURATION (CON'T)
Size
Bank 0
Bank 1
Bank 2
48MB
(2) 4M x 36
(2) 2M x 36
None
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
200MB
(2) 16M x 36
(2) 8M x 36
(2) 1M x 36
208MB
(2) 16M x 36
(2) 8M x 36
(2) 2M x 36
224MB
(2) 16M x 36
(2) 8M x 36
(2) 4M x 36
256MB
(2) 16M x 36
(2) 16M x 36
None
256MB
(2) 16M x 36
(2) 8M x 36
(2) 8M x 36
264MB
(2) 16M x 36
(2) 16M x 36
(2) 1M x 36
272MB
(2) 16M x 36
(2) 16M x 36
(2) 2M x 36
288MB
(2) 16M x 36
(2) 16M x 36
(2) 4M x 36
320MB
(2) 16M x 36
(2) 16M x 36
(2) 8M x 36
384MB
(2) 16M x 36
(2) 16M x 36
(2) 16M x 36
Note: Board accepts EDO memory.

CACHE CONFIGURATION
Note: 256KB/512KB cache is located on the Pentium Pro CPU.

CPU SPEED SELECTION (PENTIUM 5 COLUMNS)
CPU speed
Clock speed
Multiplier
CN13/
pins
1 & 5
CN13/
pins
2 & 6
CN13/
pins
3 & 7
CN13/
pins
4 & 8
J9
180MHz
60MHz
3x
Closed
Closed
Open
Closed
1 & 2
200MHz
66MHz
3x
Closed
Closed
Open
Closed
2 & 3
Note: Pins designated should be in the closed position.

CPU VOLTAGE SELECTION
Voltage
CN14/pins 1 & 5
CN14/pins 2 & 6
CN14/pins 3 & 7
CN14/pins 4 & 8

2.1v
Open
Open
Open
Closed

2.2v
Open
Open
Closed
Open

2.3v
Open
Open
Closed
Closed

2.4v
Open
Closed
Open
Open

2.5v
Open
Closed
Open
Closed

2.6v
Open
Closed
Closed
Open

2.7v
Open
Closed
Closed
Closed

2.8v
Closed
Open
Open
Open

2.9v
Closed
Open
Open
Closed

3.0v
Closed
Open
Closed
Open

3.1v
Closed
Open
Closed
Closed

3.2v
Closed
Closed
Open
Open
»
3.3v
Closed
Closed
Open
Closed

3.4v
Closed
Closed
Closed
Open

3.5v
Closed
Closed
Closed
Closed

SCSI TERMINATON SELECTION
Setting
J10

Termination disabled
Open

Termination enabled
Pins 1 & 2 closed
»
Termination switchable through SCSI select utility
Pins 2 & 3 closed

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Device Type	Mainboard
Processor	Pentium Pro
Processor Speed	180/200MHz
Chip Set	Unidentified
Maximum Onboard Memory	384MB (EDO supported)
Cache	256/512KB (located on Pentium Pro CPU)
Dimensions	330mm x 218mm
I/O Options	32-bit PCI slots (4), floppy drive interface, IDE interfaces (2), SCSI interface, Wide Ultra SCSI interface, parallel port, PS/2 mouse port, serial ports (2), VRM connector

CONNECTIONS
Purpose	Location	Purpose	Location
Serial port 1	CN1	Power LED & keylock	CN16
Serial port 2	CN2	Reset switch/RDM cable connector	CN17
Parallel port	CN3	IDE interface LED	CN18
Floppy drive interface	CN5	CPU fan power	FA1
IDE interface 1	CN6	VRM connector	J7
IDE interface 2	CN7	Wide SCSI interface	J8
RDM connector	CN8	SCSI interface	J12
RDM connector	CN9	PS/2 mouse port	MS1
Speaker	CN15	32-bit PCI slots	PC1 - PC4

USER CONFIGURABLE SETTINGS
Function		Label	Position
»	Factory configured - do not alter	CN10	Unidentified
»	Factory configured - do not alter	CN11	Unidentified
»	Factory configured - do not alter	CN12	Unidentified
»	Factory configured - do not alter	CNN1	Unidentified
»	Factory configured - do not alter	FA2	Unidentified
»	Factory configured - do not alter	FA3	Unidentified
»	Factory configured - do not alter	FA4	Unidentified
»	BIOS type select Acer	J4	Pins 1 & 2 closed
	BIOS type select OEM	J4	Pins 2 & 3 closed
»	Password enabled	J5	Pins 1 & 2 closed
	Password disabled	J5	Pins 2 & 3 closed
»	SCSI type select wide	J6	Closed
	SCSI type select narrow	J6	Open
»	Buzzer enabled	J13	Pins 1 & 2 closed
	External speaker enabled	J13	Pins 2 & 3 closed
»	Reset switch enabled	JMP1	Pins 1 & 2 closed
	Reset switch disabled, Green PC enabled	JMP1	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

SIMM CONFIGURATION (CON'T)
Size	Bank 0	Bank 1	Bank 2
48MB	(2) 4M x 36	(2) 2M x 36	None
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
200MB	(2) 16M x 36	(2) 8M x 36	(2) 1M x 36
208MB	(2) 16M x 36	(2) 8M x 36	(2) 2M x 36
224MB	(2) 16M x 36	(2) 8M x 36	(2) 4M x 36
256MB	(2) 16M x 36	(2) 16M x 36	None
256MB	(2) 16M x 36	(2) 8M x 36	(2) 8M x 36
264MB	(2) 16M x 36	(2) 16M x 36	(2) 1M x 36
272MB	(2) 16M x 36	(2) 16M x 36	(2) 2M x 36
288MB	(2) 16M x 36	(2) 16M x 36	(2) 4M x 36
320MB	(2) 16M x 36	(2) 16M x 36	(2) 8M x 36
384MB	(2) 16M x 36	(2) 16M x 36	(2) 16M x 36
Note: Board accepts EDO memory.

CPU SPEED SELECTION (PENTIUM 5 COLUMNS)
CPU speed	Clock speed	Multiplier	CN13/ pins 1 & 5	CN13/ pins 2 & 6	CN13/ pins 3 & 7	CN13/ pins 4 & 8	J9
180MHz	60MHz	3x	Closed	Closed	Open	Closed	1 & 2
200MHz	66MHz	3x	Closed	Closed	Open	Closed	2 & 3
Note: Pins designated should be in the closed position.

CPU VOLTAGE SELECTION
Voltage		CN14/pins 1 & 5	CN14/pins 2 & 6	CN14/pins 3 & 7	CN14/pins 4 & 8
	2.1v	Open	Open	Open	Closed
	2.2v	Open	Open	Closed	Open
	2.3v	Open	Open	Closed	Closed
	2.4v	Open	Closed	Open	Open
	2.5v	Open	Closed	Open	Closed
	2.6v	Open	Closed	Closed	Open
	2.7v	Open	Closed	Closed	Closed
	2.8v	Closed	Open	Open	Open
	2.9v	Closed	Open	Open	Closed
	3.0v	Closed	Open	Closed	Open
	3.1v	Closed	Open	Closed	Closed
	3.2v	Closed	Closed	Open	Open
»	3.3v	Closed	Closed	Open	Closed
	3.4v	Closed	Closed	Closed	Open
	3.5v	Closed	Closed	Closed	Closed

SCSI TERMINATON SELECTION
Setting		J10
	Termination disabled	Open
	Termination enabled	Pins 1 & 2 closed
»	Termination switchable through SCSI select utility	Pins 2 & 3 closed