AMERICAN MEGATRENDS, INC.
ATLAS PCI - II
| 
 Processor  | 
 Pentium  | 
| 
 Processor Speed  | 
 75/90/100/120/133MHz  | 
| 
 Chip Set  | 
 Unidentified  | 
| 
 Video Chip Set  | 
 None  | 
| 
 Maximum Onboard Memory  | 
 256MB DRAM (EDO supported)  | 
| 
 Maximum Video Memory  | 
 None  | 
| 
 Cache  | 
 256/512/1024KB  | 
| 
 BIOS  | 
 AMI  | 
| 
 Dimensions  | 
 254mm x 203mm  | 
| 
 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), green VGA interface, cache slot  | 
| 
 NPU Options  | 
 None  | 
| 
 CONNECTIONS  | |||
| 
 Purpose  | 
 Location  | 
 Purpose  | 
 Location  | 
| 
 IDE interface 2  | 
 J1  | 
 Green PC connector  | 
 J27  | 
| 
 Serial port 1  | 
 J3  | 
 Reset switch  | 
 J29  | 
| 
 Serial port 2  | 
 J4  | 
 Turbo LED  | 
 J33  | 
| 
 Parallel port  | 
 J6  | 
 IDE interface LED  | 
 J34  | 
| 
 Floppy drive interface  | 
 J7  | 
 Green VGA interface  | 
 J42  | 
| 
 IDE interface 1  | 
 J8  | 
 Chassis fan power  | 
 J46  | 
| 
 PS/2 mouse interface  | 
 J13  | 
 32-bit PCI slots  | 
 PC1 - PC4  | 
| 
 Power LED & keylock  | 
 J19  | 
 Cache slot  | 
 SL1  | 
| 
 Speaker  | 
 J22  | ||
| 
 USER CONFIGURABLE SETTINGS  | |||
| 
 Function  | 
 Label  | 
 Position  | |
| 
 Jumper information unidentified  | 
 J20  | 
 N/A  | |
| 
 Jumper information unidentified  | 
 J31  | 
 N/A  | |
| 
 »  | 
 PS/2 mouse IRQ12 enabled  | 
 J38  | 
 Pins 1 & 2 closed  | 
| 
 PS/2 mouse IRQ12 disabled  | 
 J38  | 
 Pins 2 & 3 closed  | |
| 
 Jumper information unidentified  | 
 J45  | 
 N/A  | |
| 
 Jumper information unidentified  | 
 J47  | 
 N/A  | |
| 
 Jumper information unidentified  | 
 J50  | 
 N/A  | |
| 
 DRAM CONFIGURATION  | ||
| 
 Size  | 
 Bank 0  | 
 Bank 1  | 
| 
 2MB  | 
 (2) 256K x 36  | 
 None  | 
| 
 4MB  | 
 (2) 512K x 36  | 
 None  | 
| 
 4MB  | 
 (2) 256K x 36  | 
 (2) 256K x 36  | 
| 
 6MB  | 
 (2) 512K x 36  | 
 (2) 256K x 36  | 
| 
 6MB  | 
 (2) 256K x 36  | 
 (2) 512K x 36  | 
| 
 8MB  | 
 (2) 1M x 36  | 
 None  | 
| 
 8MB  | 
 (2) 512K x 36  | 
 (2) 512K x 36  | 
| 
 10MB  | 
 (2) 1M x 36  | 
 (2) 256K x 36  | 
| 
 10MB  | 
 (2) 256K x 36  | 
 (2) 1M x 36  | 
| 
 12MB  | 
 (2) 1M x 36  | 
 (2) 512K x 36  | 
| 
 12MB  | 
 (2) 512K x 36  | 
 (2) 1M x 36  | 
| 
 16MB  | 
 (2) 2M x 36  | 
 None  | 
| 
 16MB  | 
 (2) 1M x 36  | 
 (2) 1M x 36  | 
| 
 18MB  | 
 (2) 2M x 36  | 
 (2) 256K x 36  | 
| 
 18MB  | 
 (2) 256K x 36  | 
 (2) 2M x 36  | 
| 
 20MB  | 
 (2) 2M x 36  | 
 (2) 512K x 36  | 
| 
 20MB  | 
 (2) 512K x 36  | 
 (2) 2M x 36  | 
| 
 24MB  | 
 (2) 2M x 36  | 
 (2) 1M x 36  | 
| 
 24MB  | 
 (2) 1M x 36  | 
 (2) 2M x 36  | 
| 
 32MB  | 
 (2) 4M x 36  | 
 None  | 
| 
 32MB  | 
 (2) 2M x 36  | 
 (2) 2M x 36  | 
| 
 DRAM CONFIGURATION (CON’T)  | ||
| 
 Size  | 
 Bank 0  | 
 Bank 1  | 
| 
 34MB  | 
 (2) 4M x 36  | 
 (2) 256K x 36  | 
| 
 34MB  | 
 (2) 256K x 36  | 
 (2) 4M x 36  | 
| 
 36MB  | 
 (2) 4M x 36  | 
 (2) 512K x 36  | 
| 
 36MB  | 
 (2) 512K x 36  | 
 (2) 4M x 36  | 
| 
 40MB  | 
 (2) 4M x 36  | 
 (2) 1M x 36  | 
| 
 40MB  | 
 (2) 1M x 36  | 
 (2) 4M x 36  | 
| 
 48MB  | 
 (2) 4M x 36  | 
 (2) 2M x 36  | 
| 
 48MB  | 
 (2) 2M x 36  | 
 (2) 4M x 36  | 
| 
 64MB  | 
 (2) 8M x 36  | 
 None  | 
| 
 64MB  | 
 (2) 4M x 36  | 
 (2) 4M x 36  | 
| 
 66MB  | 
 (2) 8M x 36  | 
 (2) 256K x 36  | 
| 
 66MB  | 
 (2) 256K x 36  | 
 (2) 8M x 36  | 
| 
 68MB  | 
 (2) 8M x 36  | 
 (2) 512K x 36  | 
| 
 68MB  | 
 (2) 512K x 36  | 
 (2) 8M x 36  | 
| 
 72MB  | 
 (2) 8M x 36  | 
 (2) 1M x 36  | 
| 
 72MB  | 
 (2) 1M x 36  | 
 (2) 8M x 36  | 
| 
 80MB  | 
 (2) 8M x 36  | 
 (2) 2M x 36  | 
| 
 80MB  | 
 (2) 2M x 36  | 
 (2) 8M x 36  | 
| 
 96MB  | 
 (2) 8M x 36  | 
 (2) 4M x 36  | 
| 
 96MB  | 
 (2) 4M x 36  | 
 (2) 8M x 36  | 
| 
 128MB  | 
 (2) 16M x 36  | 
 None  | 
| 
 128MB  | 
 (2) 8M x 36  | 
 (2) 8M x 36  | 
| 
 130MB  | 
 (2) 16M x 36  | 
 (2) 256K x 36  | 
| 
 132MB  | 
 (2) 16M x 36  | 
 (2) 512K x 36  | 
| 
 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  | 
 SL1  | 
| 
 256KB (A)  | 
 (8) 32K x 8  | 
 Not installed  | 
| 
 256KB (B)  | 
 None  | 
 Installed  | 
| 
 512KB (A)  | 
 (8) 64K x 8  | 
 Not installed  | 
| 
 512KB (B)  | 
 None  | 
 Installed  | 
| 
 1MB (C)  | 
 (8) 128K x 8  | 
 Not installed  | 
| 
 1MB (C)  | 
 None  | 
 Installed  | 
| 
 CACHE JUMPER CONFIGURATION  | |||
| 
 Size  | 
 J16  | 
 J26  | 
 J28  | 
| 
 256KB (A)  | 
 Pins 1 & 2 closed  | 
 Pins 1 & 2 closed  | 
 Pins 1 & 2 closed  | 
| 
 256KB (B)  | 
 Pins 2 & 3 closed  | 
 Pins 1 & 2 closed  | 
 Pins 1 & 2 closed  | 
| 
 512KB (A)  | 
 Pins 1 & 2 closed  | 
 Pins 1 & 2 closed  | 
 Pins 2 & 3 closed  | 
| 
 512KB (B)  | 
 Pins 2 & 3 closed  | 
 Pins 1 & 2 closed  | 
 Pins 2 & 3 closed  | 
| 
 1MB (C)  | 
 Pins 1 & 2 closed  | 
 Pins 2 & 3 closed  | 
 Pins 2 & 3 closed  | 
| 
 1MB (C)  | 
 Pins 2 & 3 closed  | 
 Pins 2 & 3 closed  | 
 Pins 2 & 3 closed  | 
| 
 CACHE TYPE CONFIGURATION  | |
| 
 Setting  | 
 J30  | 
| 
 SMT cache enabled  | 
 Pins 1 & 2 closed  | 
| 
 SMT cache disabled  | 
 Pins 2 & 3 closed  | 
| 
 CPU SPEED SELECTION  | ||||
| 
 Speed  | 
 J24  | 
 J25  | 
 J37  | 
 J39  | 
| 
 75MHz  | 
 Closed  | 
 Closed  | 
 Open  | 
 Open  | 
| 
 90MHz  | 
 Closed  | 
 Open  | 
 Open  | 
 Open  | 
| 
 100MHz  | 
 Open  | 
 Closed  | 
 Open  | 
 Open  | 
| 
 120MHz  | 
 Closed  | 
 Open  | 
 Open  | 
 Closed  | 
| 
 133MHz  | 
 Open  | 
 Closed  | 
 Open  | 
 Closed  | 
| 
 CPU TYPE SELECTION  | |
| 
 Type  | 
 J11  | 
| 
 VR  | 
 Pins 1 & 2 closed  | 
| 
 VRE  | 
 Pins 2 & 3 closed  | 
| 
 CPU VOLTAGE SELECTION  | |||
| 
 Voltage  | 
 J2  | 
 J12  | 
 J21  | 
| 
 From regulator  | 
 Open  | 
 1 & 2, 3 & 4, 5 & 6  | 
 1 & 2, 3 & 4, 5 & 6  | 
| 
 From regulator & VRM  | 
 Open  | 
 1 & 2, 3 & 4, 5 & 6  | 
 Open  | 
| 
 From 3.3v power supply  | 
 1 & 2, 3 & 4, 5 & 6  | 
 Open  | 
 1 & 2, 3 & 4, 5 & 6  |