AMERICAN MEGATRENDS, INC.
ATLAS PCI-III
|
Device Type |
Mainboard |
|
Processor |
AM K5/AM K6/Pentium |
|
Processor Speed |
75/90/100/120/133/150/166/180/200MHz |
|
Chip Set |
Intel |
|
Video Chip Set |
None |
|
Maximum Onboard Memory |
256MB (EDO supported) |
|
Maximum Video Memory |
None |
|
Cache |
256/512KB |
|
BIOS |
AMI |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
32-bit PCI slots (4), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse interface, serial ports (2), VRM connector, USB connectors (2) |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
CPU fan power |
J13 |
IDE interface 1 |
P5 |
|
Reset switch |
J20 |
Power connector |
P6 |
|
IDE interface LED |
J21 |
Auxiliary power connector |
P8 |
|
Green PC connector |
J22 |
IDE interface 2 |
P9 |
|
Speaker |
J23 |
32-bit PCI slots |
PC1 – PC4 |
|
Power LED & keylock |
J24 |
PS/2 mouse interface |
PS2 |
|
Serial port 1 |
P1 |
USB connector 1 |
USB1 |
|
Serial port 2 |
P2 |
USB connector 2 |
USB2 |
|
Floppy drive interface |
P3 |
VRM connector |
VRM |
|
Parallel port |
P4 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Label |
Position | |
|
» |
Factory configured - do not alter |
J2 |
Closed |
|
» |
Factory configured - do not alter |
J3 |
Open |
|
PCI bus clock speed select 33MHz/66MHz |
J15 |
Pins 1 & 2 closed | |
|
PCI bus clock speed select 25MHz/75MHz |
J15 |
Pins 2 & 3 closed | |
|
» |
CMOS memory normal operation |
J18 |
Open |
|
CMOS memory clear |
J18 |
Closed | |
|
PS/2 mouse IRQ12 enabled |
J19 |
Pins 2 & 3 closed | |
|
PS/2 mouse IRQ12 disabled |
J19 |
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 |
|
128MB |
(2) 16M x 36 |
None |
|
SIMM CONFIGURATION (CON’T) | ||
|
Size |
Bank 0 |
Bank 1 |
|
136MB |
(2) 16M x 36 |
(2) 1M x 36 |
|
144MB |
(2) 16M x 36 |
(2) 2M x 36 |
|
160MB |
(2) 16M x 36 |
(2) 4M x 36 |
|
192MB |
(2) 16M x 36 |
(2) 8M x 36 |
|
256MB |
(2) 16M x 36 |
(2) 16M x 36 |
|
Note: Board accepts EDO memory. | ||
|
CACHE CONFIGURATION | |||
|
Size |
Bank 0 |
Bank 1 |
TAG |
|
256KB |
(2) 32K x 32 |
None |
(1) 32K x 8 |
|
512KB |
(2) 32K x 32 |
(2) 32K x 32 |
(1) 32K x 8 |
|
Note: The location of banks 0 & 1 and the TAG is unidentified. | |||
|
CACHE JUMPER CONFIGURATION | |||||
|
Size |
J1 |
J9 |
J10 |
J11 |
J12 |
|
256KB |
Open |
1 & 2 |
1 & 2 |
1 & 2 |
1 & 2 |
|
512KB |
Closed |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
|
Note: Pins designated should be in the closed position. | |||||
|
CPU SPEED SELECTION | ||||||
|
CPU speed |
Clock speed |
Multiplier |
J5 |
J6 |
J7 |
J8 |
|
75MHz |
50MHz |
1.5x |
Closed |
Closed |
Open |
Open |
|
90MHz |
60MHz |
1.5x |
Closed |
Open |
Open |
Open |
|
100MHz |
50MHz |
1.5x |
Open |
Closed |
Open |
Open |
|
120MHz |
60MHz |
2x |
Closed |
Open |
Open |
Closed |
|
133MHz |
66MHz |
2x |
Open |
Closed |
Open |
Closed |
|
150MHz |
60MHz |
2.5x |
Closed |
Open |
Closed |
Closed |
|
166MHz |
66MHz |
2.5x |
Open |
Closed |
Closed |
Closed |
|
180MHz |
60MHz |
3x |
Closed |
Open |
Closed |
Open |
|
200MHz |
66MHz |
3x |
Open |
Closed |
Closed |
Open |
|
CPU VOLTAGE SELECTION | ||
|
Voltage |
J14 | |
| » |
NO VRM module installed |
Pins 1 & 2, 3 & 4, 5 & 6 closed |
|
2.8v VRM installed |
Open | |
|
3.1v VRM installed |
Open | |