AMERICAN MEGATRENDS, INC. APOLLO IV Device Type Mainboard Processor AM K5/AM K6/Pentium Processor Speed 90/100/120/133/150/166/200/233MHz Chip Set Intel Video Chip Set None Maximum Onboard 256MB (EDO supported) Memory Maximum Video Memory None Cache 512KB BIOS AMI Dimensions 254mm 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), IR connector, USB connectors (2) NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location Power LED & keylock C1 Serial port 1 CN4 Turbo LED C2 IDE interface 2 CN5 Green PC connector C3 IDE interface 1 CN6 Green PC LED C4 CPU fan power CPU Speaker C5 Chassis fan power FAN IDE interface LED C6 IR connector IR1 Remote power switch C7 32-bit PCI slots PC1 – PC4 Reset switch C8 PS/2 mouse interface PS2 Parallel port CN1 Soft off power supply RPW Floppy drive interface CN2 USB connector 1 USB1 Serial port 2 CN3 USB connector 2 USB2 USER CONFIGURABLE SETTINGS Function Label Position » CMOS memory normal operation CPW Open CMOS memory clear CPW Closed » Power supply type select AT PWR1 Pins 1 & 2 closed Power supply type select remote PWR1 Pins 2 & 3 power 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 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. DIMM CONFIGURATION Size Bank 2 Bank 3 8MB (1) 1M x 64 None 16MB (1) 2M x 64 None 16MB (1) 1M x 64 (1) 1M x 64 24MB (1) 2M x 64 (1) 1M x 64 32MB (1) 4M x 64 None 32MB (1) 2M x 64 (1) 2M x 64 40MB (1) 4M x 64 (1) 1M x 64 48MB (1) 4M x 64 (1) 2M x 64 64MB (1) 8M x 64 None 64MB (1) 4M x 64 (1) 4M x 64 72MB (1) 8M x 64 (1) 1M x 64 80MB (1) 8M x 64 (1) 2M x 64 96MB (1) 8M x 64 (1) 4M x 64 128MB (1) 16M x 64 None 128MB (1) 8M x 64 (1) 8M x 64 136MB (1) 16M x 64 (1) 1M x 64 144MB (1) 16M x 64 (1) 2M x 64 160MB (1) 16M x 64 (1) 4M x 64 192MB (1) 16M x 64 (1) 8M x 64 256MB (1) 16M x 64 (1) 16M x 64 CACHE CONFIGURATION Size Bank 0 512KB (2) 64K x 32 Note: The size of the TAG is unidentified. CPU SPEED SELECTION (AM K5, IMI 652) CPU Clock Multiplier CLK1 CLK2 CLK3 FREQ1 FREQ2 FREQ3 speed speed 90MHz 60MHz 1.5x 2 & 1 & 2 & 1 & 2 1 & 2 1 & 2 3 2 3 100MHz 66MHz 1.5x 1 & 1 & 2 & 1 & 2 1 & 2 1 & 2 2 2 3 120MHz 60MHz 1.5x 2 & 1 & 2 & 1 & 2 1 & 2 1 & 2 3 2 3 133MHz 66MHz 1.5x 2 & 1 & 2 & 1 & 2 1 & 2 1 & 2 3 2 3 150MHz 60MHz 1.75x 2 & 1 & 2 & 2 & 3 2 & 3 1 & 2 3 2 3 166MHz 66MHz 1.75x 1 & 1 & 2 & 2 & 3 2 & 3 1 & 2 2 2 3 200MHz 66MHz 2x 1 & 1 & 2 & 1 & 2 2 & 3 1 & 2 2 2 3 Note: Pins designated should be in the closed position. CPU SPEED SELECTION (AM K5, OCS 9147) CPU Clock Multiplier CLK1 CLK2 CLK3 FREQ1 FREQ2 FREQ3 speed speed 90MHz 60MHz 1.5x 2 & 2 & 2 & 1 & 2 1 & 2 1 & 2 3 3 3 100MHz 66MHz 1.5x 1 & 2 & 2 & 1 & 2 1 & 2 1 & 2 2 3 3 120MHz 60MHz 1.5x 2 & 2 & 2 & 1 & 2 1 & 2 1 & 2 3 3 3 133MHz 66MHz 1.5x 1 & 2 & 2 & 1 & 2 1 & 2 1 & 2 2 3 3 150MHz 60MHz 1.75x 2 & 2 & 2 & 2 & 3 2 & 3 1 & 2 3 3 3 166MHz 66MHz 1.75x 1 & 2 & 2 & 2 & 3 2 & 3 1 & 2 2 3 3 200MHz 66MHz 2x 1 & 2 & 2 & 1 & 2 2 & 3 1 & 2 2 3 3 Note: Pins designated should be in the closed position. CPU SPEED SELECTION (AM K6, IMI 652) CPU Clock Multiplier CLK1 CLK2 CLK3 FREQ1 FREQ2 FREQ3 speed speed 166MHz 66MHz 2.5x 1 & 1 & 2 & 2 & 3 2 & 3 1 & 2 2 2 3 200MHz 66MHz 3x 1 & 1 & 2 & 1 & 2 2 & 3 1 & 2 2 2 3 233MHz 66MHz 3.5x 1 & 1 & 2 & 1 & 2 1 & 2 1 & 2 2 2 3 Note: Pins designated should be in the closed position. CPU SPEED SELECTION (AM K6, OCS 9147) CPU Clock Multiplier CLK1 CLK2 CLK3 FREQ1 FREQ2 FREQ3 speed speed 166MHz 66MHz 2.5x 1 & 2 & 2 & 2 & 3 2 & 3 1 & 2 2 3 3 200MHz 66MHz 3x 1 & 2 & 2 & 1 & 2 2 & 3 1 & 2 2 3 3 233MHz 66MHz 3.5x 1 & 2 & 2 & 1 & 2 1 & 2 1 & 2 2 3 3 Note: Pins designated should be in the closed position. CPU SPEED SELECTION (INTEL, IMI 652) CPU Clock Multiplier CLK1 CLK2 CLK3 FREQ1 FREQ2 FREQ3 speed speed 90MHz 60MHz 1.5x 1 & 1 & 2 & 1 & 2 1 & 2 1 & 2 2 2 3 100MHz 66MHz 1.5x 1 & 1 & 2 & 1 & 2 1 & 2 1 & 2 2 2 3 120MHz 60MHz 2x 2 & 1 & 2 & 2 & 3 1 & 2 1 & 2 3 2 3 133MHz 66MHz 2x 1 & 1 & 2 & 2 & 3 1 & 2 1 & 2 2 2 3 150MHz 60MHz 2.5x 2 & 1 & 2 & 2 & 3 2 & 3 1 & 2 3 2 3 166MHz 66MHz 2.5x 1 & 1 & 2 & 2 & 3 2 & 3 1 & 2 2 2 3 200MHz 66MHz 3x 1 & 1 & 2 & 1 & 2 2 & 3 1 & 2 2 2 3 Note: Pins designated should be in the closed position. CPU SPEED SELECTION (INTEL, OCS 9147) CPU Clock Multiplier CLK1 CLK2 CLK3 FREQ1 FREQ2 FREQ3 speed speed 90MHz 60MHz 1.5x 2 & 2 & 2 & 1 & 2 1 & 2 1 & 2 3 3 3 100MHz 66MHz 1.5x 1 & 2 & 2 & 1 & 2 1 & 2 1 & 2 2 3 3 120MHz 60MHz 2x 2 & 2 & 2 & 2 & 3 1 & 2 1 & 2 3 3 3 133MHz 66MHz 2x 1 & 2 & 2 & 2 & 3 1 & 2 1 & 2 2 3 3 150MHz 60MHz 2.5x 2 & 2 & 2 & 2 & 3 2 & 3 1 & 2 3 3 3 166MHz 66MHz 2.5x 1 & 2 & 2 & 2 & 3 2 & 3 1 & 2 2 3 3 200MHz 66MHz 3x 1 & 2 & 2 & 1 & 2 2 & 3 1 & 2 2 3 3 Note: Pins designated should be in the closed position. CPU SPEED SELECTION (INTEL MMX, IMI 652) CPU Clock Multiplier CLK1 CLK2 CLK3 FREQ1 FREQ2 FREQ3 speed speed 166MHz 66MHz 2.5x 1 & 1 & 2 & 2 & 3 2 & 3 1 & 2 2 2 3 200MHz 66MHz 3x 1 & 1 & 2 & 1 & 2 2 & 3 1 & 2 2 2 3 233MHz 66MHz 3.5x 1 & 1 & 2 & 1 & 2 1 & 2 1 & 2 2 2 3 Note: Pins designated should be in the closed position. CPU SPEED SELECTION (INTEL MMX, OCS 9147) CPU Clock Multiplier CLK1 CLK2 CLK3 FREQ1 FREQ2 FREQ3 speed speed 166MHz 66MHz 2.5x 1 & 2 & 2 & 2 & 3 2 & 3 1 & 2 2 3 3 200MHz 66MHz 3x 1 & 2 & 2 & 1 & 2 2 & 3 1 & 2 2 3 3 233MHz 66MHz 3.5x 1 & 2 & 2 & 1 & 2 1 & 2 1 & 2 2 3 3 Note: Pins designated should be in the closed position. CPU VOLTAGE SELECTION (SINGLE) Voltage VR1 3.3v Pins 3 & 4 closed 3.5v Pins 1 & 2 closed CPU VOLTAGE SELECTION (DUAL) Voltage V core VR1 3.3v 2.8v Pins 9 & 10 closed 3.3v 2.9v Pins 7 & 8 closed 3.3v 3.2v Pins 5 & 6 closed FLASH BIOS SELECTION Type EP1 EP2 AMD 28F020 Pins 1 & 2 closed Pins 2 & 3 closed ATMEL AT29C020 Open Pins 2 & 3 closed Intel 28F001 Pins 2 & 3 closed Pins 1 & 2 closed MXIC MX28F200 Pins 2 & 3 closed Pins 2 & 3 closed SST 29EE010 Open Pins 2 & 3 closed SST 29EE020 Open Pins 2 & 3 closed