TYAN COMPUTER CORPORATION S1846S Device Type Mainboard Processor Pentium II/Celeron Processor Speed 233/266/300/333/350/400MHz Chip Set Intel 440BX Maximum Onboard Memory 768MB (SDRAM supported) Cache 0/128/256/512KB (located on CPU) BIOS AMI Dimensions 305mm x 244mm I/O Options 32-bit PCI slots (5), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2), IR connector, USB connectors (2), ATX power connector, AGP slot [Image] CONNECTIONS Purpose Location Purpose Location AGP slot AGP Floppy drive CN9 interface ATX power ATX Wake on LAN CON3 connector connector Chassis fan power C1 Chassis intrusion J7 connector Chassis fan power C2 Soft off power J8/pins 1 & 2 supply Chassis fan power C3 Green PC connector J8/pins 3 & 4 Serial port 2 CN1 IR connector J8/pins 6 - 10 Serial port 1 CN2 IDE interface LED J8/pins 13 - 16 Parallel port CN3 Power LED J8/pins 18 & 20 USB connector 1 CN4 Reset switch J8/pins 22 & 23 USB connector 2 CN5 Speaker J8/pins 24 - 27 PS/2 mouse port CN6 Green PC connector JP16 IDE interface 2 CN7 32-bit PCI slots PC1 - PC5 IDE interface 1 CN8 USER CONFIGURABLE SETTINGS Function Label Position » Factory configured - do not CON2 Unidentified alter » CMOS memory normal operation JP2 Pins 1 & 2 closed CMOS memory clear JP2 Pins 2 & 3 closed DIMM CONFIGURATION Size Bank 0 Bank 1 Bank 2 8MB (1) 1M x 64 None None 16MB (1) 1M x 64 (1) 1M x 64 None 16MB (1) 2M x 64 None None 24MB (1) 1M x 64 (1) 1M x 64 (1) 1M x 64 32MB (1) 2M x 64 (1) 2M x 64 None 32MB (1) 4M x 64 None None 48MB (1) 2M x 64 (1) 2M x 64 (1) 2M x 64 64MB (1) 4M x 64 (1) 4M x 64 None 64MB (1) 8M x 64 None None 96MB (1) 4M x 64 (1) 4M x 64 (1) 4M x 64 128MB (1) 8M x 64 (1) 8M x 64 None 128MB (1) 16M x 64 None None DIMM CONFIGURATION (CON'T) Size Bank 0 Bank 1 Bank 2 164MB (1) 16M x 64 (1) 1M x 64 None 144MB (1) 16M x 64 (1) 1M x 64 (1) 1M x 64 144MB (1) 16M x 64 (1) 2M x 64 None 160MB (1) 16M x 64 (1) 2M x 64 (1) 2M x 64 160MB (1) 16M x 64 (1) 4M x 64 None 192MB (1) 16M x 64 (1) 4M x 64 (1) 4M x 64 192MB (1) 16M x 64 (1) 8M x 64 None 192MB (1) 8M x 64 (1) 8M x 64 (1) 8M x 64 256MB (1) 16M x 64 (1) 8M x 64 (1) 8M x 64 256MB (1) 16M x 64 (1) 16M x 64 None 256MB (1) 32M x 64 None None 264MB (1) 32M x 64 (1) 1M x 64 None 272MB (1) 32M x 64 (1) 1M x 64 (1) 1M x 64 272MB (1) 32M x 64 (1) 2M x 64 None 288MB (1) 32M x 64 (1) 2M x 64 (1) 2M x 64 288MB (1) 32M x 64 (1) 4M x 64 None 320MB (1) 32M x 64 (1) 4M x 64 (1) 4M x 64 320MB (1) 32M x 64 (1) 8M x 64 None 384MB (1) 32M x 64 (1) 8M x 64 (1) 8M x 64 384MB (1) 32M x 64 (1) 16M x 64 None 384MB (1) 16M x 64 (1) 16M x 64 (1) 16M x 64 512MB (1) 32M x 64 (1) 16M x 64 (1) 16M x 64 512MB (1) 32M x 64 (1) 32M x 64 None 768MB (1) 32M x 64 (1) 32M x 64 (1) 32M x 64 Note: Board accepts SDRAM memory. CACHE CONFIGURATION Note: 256KB/512KB cache is located on the Pentium II CPU. 128KB cache is located on the Celeron 300A & 333 CPU. CPU SPEED SELECTION CPU Clock Multiplier JP10 JP11 JP12 JP13 speed speed 233MHz 66MHz 3.5x Closed Open Open Closed 266MHz 66MHz 4x Open Closed Closed Closed 300MHz 66MHz 4.5x Open Closed Open Closed 300MHz 100MHz 3x Closed Open Closed Closed 333MHz 66MHz 5x Open Open Closed Closed 350MHz 100MHz 3.5x Closed Open Open Closed 400MHz 100MHz 4x Open Closed Closed Closed FLOPPY DRIVE/IR SELECTION Setting JP4 JP7 JP8 2 floppy drives Closed Pins 2 & 3 Pins 1 & 2 closed closed 1 floppy, 1 IR Open Pins 1 & 2 Pins 2 & 3 closed closed