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 [Image] 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 Pins 1 & 2 Pins 1 & 2 closed closed closed 256KB (B) Pins 2 & 3 Pins 1 & 2 Pins 1 & 2 closed closed closed 512KB (A) Pins 1 & 2 Pins 1 & 2 Pins 2 & 3 closed closed closed 512KB (B) Pins 2 & 3 Pins 1 & 2 Pins 2 & 3 closed closed closed 1MB (C) Pins 1 & 2 Pins 2 & 3 Pins 2 & 3 closed closed closed 1MB (C) Pins 2 & 3 Pins 2 & 3 Pins 2 & 3 closed closed 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, 1 & 2, 3 & 4, 5 5 & 6 & 6 From regulator & VRM Open 1 & 2, 3 & 4, Open 5 & 6 From 3.3v power 1 & 2, 3 & 4, Open 1 & 2, 3 & 4, 5 supply 5 & 6 & 6