ACER, INC.
ACERALTOS 300 (M1A), M1A
|
Device Type |
Mainboard |
|
Processor |
CX M1/AM K5/Pentium |
|
Processor Speed |
75/90/100/120/133MHz |
|
Chip Set |
OPTI |
|
Video Chip Set |
Unidentified |
|
Maximum Onboard Memory |
128MB (EDO supported) |
|
Maximum Video Memory |
2MB |
|
Cache |
256KB |
|
BIOS |
Acer |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
Ethernet 10BaseT connector, floppy drive interface, green PC connector, IDE interfaces (2), SCSI interface, parallel port, PS/2 mouse port, serial ports (2), VGA feature connector, VGA port, riser slot |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
VGA port |
C1 |
SCSI interface |
CN10 |
|
Parallel port |
C2 |
Power LED & keylock |
CN11 |
|
Serial port 2 |
C3 |
Power LED & keylock |
CN12/pins 1 – 4 |
|
Serial port 1 |
C4 |
Reset switch |
CN12/pins 6 & 7 |
|
PS/2 mouse port |
C5 |
IDE interface LED |
CN13 |
|
Ethernet 10BaseT connector |
C6 |
Speaker |
CN14 |
|
Chassis fan power |
C7 |
Power LED & keylock |
CN15/pins 1 – 5 |
|
Chassis fan power |
C8 |
Speaker |
CN15/pins 7 – 10 |
|
AUI interface |
CN4 |
Turbo LED |
CN15/pins 12 & 13 |
|
VGA feature connector |
CN5 |
Turbo switch |
CN15/pins 15 – 17 |
|
Floppy drive interface |
CN6 |
Reset switch |
CN15/pins 19 & 20 |
|
IDE interface 2 |
CN7 |
Riser slot |
SL1 |
|
IDE interface 1 |
CN8 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Label |
Position | |
|
» |
Factory configured - do not alter |
CN16 |
Unidentified |
|
» |
BIOS type select Acer |
JP1 |
Pins 1 & 2 closed |
|
BIOS type select OEM |
JP1 |
Pins 2 & 3 closed | |
|
» |
Password disabled |
JP2 |
Pins 2 & 3 closed |
|
Password enabled |
JP2 |
Pins 1 & 2 closed | |
|
SIMM 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 |
|
Note: Board accepts EDO memory. | ||
|
SIMM JUMPER CONFIGURATION | |||
|
Type |
JP9 |
JP14 | |
| » |
Normal |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
|
EDO |
Pins 2 & 3 closed |
Pins 2 & 3 closed | |
|
CACHE CONFIGURATION | |||
|
Size |
Bank 0 |
Bank 1 |
TAG |
|
256KB |
None |
(8) 32K x 8 |
(1) 8K x 8 |
|
256KB |
(2) 32K x 32 |
None |
(1) 32K x 8 |
|
VIDEO MEMORY CONFIGURATION | ||
|
Size |
Bank 0 |
Bank 1 |
|
1MB |
(2) 256K x 16 |
None |
|
2MB |
(2) 256K x 16 |
(2) 256K x 16 |
|
CPU SPEED SELECTION (CX M1) | |||||
|
CPU speed |
Clock speed |
Multiplier |
JP5 |
JP8 |
JX1 |
|
120MHz |
60MHz |
2x |
1 & 2 |
2 & 3 |
1 & 2 |
|
133MHz |
66MHz |
2x |
2 & 3 |
2 & 3 |
1 & 2 |
|
Note: Pins designated should be in the closed position. | |||||
|
CPU SPEED SELECTION (AM K5) | |||||
|
CPU speed |
Clock speed |
Multiplier |
JP5 |
JP8 |
JX1 |
|
75MHz |
50MHz |
1.5x |
Open |
1 & 2 |
1 & 2 |
|
90MHz |
60MHz |
1.5x |
1 & 2 |
1 & 2 |
1 & 2 |
|
100MHz |
66MHz |
1.5x |
2 & 3 |
1 & 2 |
1 & 2 |
|
Note: Pins designated should be in the closed position. | |||||
|
CPU SPEED SELECTION (INTEL) | |||||
|
CPU speed |
Clock speed |
Multiplier |
JP5 |
JP8 |
JX1 |
|
75MHz |
50MHz |
1.5x |
Open |
1 & 2 |
1 & 2 |
|
90MHz |
60MHz |
1.5x |
1 & 2 |
1 & 2 |
1 & 2 |
|
100MHz |
66MHz |
1.5x |
2 & 3 |
1 & 2 |
1 & 2 |
|
120MHz |
60MHz |
2x |
1 & 2 |
2 & 3 |
1 & 2 |
|
133MHz |
66MHz |
2x |
2 & 3 |
2 & 3 |
1 & 2 |
|
Note: Pins designated should be in the closed position. | |||||
|
CPU TYPE SELECTION | ||||
|
Type |
JP10 |
JP11 |
JP12 |
JP13 |
|
AM K5 |
Closed |
Closed |
Open |
Closed |
|
CX M1 |
Open |
Open |
Open |
Open |
|
Intel |
Closed |
Closed |
Closed |
Closed |
|
CPU VOLTAGE SELECTION | |
|
Voltage |
JP7 |
|
VR |
Pins 1 & 2 closed |
|
VRE |
Pins 2 & 3 closed |