ELITEGROUP COMPUTER SYSTEMS, INC. SI55P AIO Processor Pentium Processor Speed 75/90/100/120/133/150/166MHz Chip Set SIS Video Chip Set None Maximum Onboard 128MB (EDO supported) Memory Maximum Video Memory 1MB Cache 256/512/1024KB BIOS Unidentified Dimensions 330mm x 218mm I/O Options 32-bit PCI slots (4), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, serial ports (2), IR connector, VRM connector NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location Serial port 1 J6 Power LED & J12 pins 11 - keylock 15 Floppy drive J7 Speaker J12 pins 17 - interface 20 Parallel port J8 IDE interface LED J13 Serial port 2 J9 VRM connector J15 IDE interface 2 J10 IR connector JP2 IDE interface 1 J11 Green PC connector JP7 Turbo LED J12 pins 2 & Chassis fan power JP23 3 Green PC connector J12 pins 4 & 32-bit PCI slots PC1 - PC4 5 Reset switch J12 pins 9 & 10 USER CONFIGURABLE SETTINGS Function Label Position On board I/O enabled JP1 Open On board I/O disabled JP1 Closed Flash BIOS voltage select 12v JP3 Pins 2 & 3 closed Flash BIOS voltage select 5v JP3 Pins 1 & 2 closed » Factory configured - do not JP20 Unidentified alter DRAM 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 Note: Board accepts EDO memory. DRAM PARITY CONFIGURATION Setting JP8 Enabled Closed Disabled Open CACHE CONFIGURATION Size Bank 0 Bank 1 TAG 256KB (A) (2) 32K x 32 None None 256KB (B) None (8) 32K x 8 (1) 32K x 8 512KB None (8) 64K x 8 (1) 32K x 8 1MB None (8) 128K x 8 (1) 32K x 8 CACHE JUMPER CONFIGURATION Size JP18 JP19 256KB (A) Pins 2 & 3 closed Pins 2 & 3 closed 256KB (B) Pins 2 & 3 closed Pins 2 & 3 closed 512KB Pins 2 & 3 closed Pins 1 & 2 closed 1MB Pins 1 & 2 closed Pins 1 & 2 closed CACHE VOLTAGE CONFIGURATION Voltage JP14 JP15 JP16 3.3v Pins 2 & 3 Pins 2 & 3 Pins 2 & 3 closed closed closed Mixed Pins 1 & 2 Pins 1 & 2 Pins 1 & 2 closed closed closed CPU SPEED SELECTION CPU Clock Multiplier J15 JP21 JP22 JP25 JP26 speed speed 75MHz 50MHz 1.5x 6 & Open Open Closed Open 7, 21 & 22 90MHz 60MHz 1.5x 6 & Open Open Open Closed 7, 21 & 22 100MHz 66MHz 1.5x 6 & Open Open Closed Closed 7, 21 & 22 120MHz 60MHz 2x 6 & Open Closed Open Closed 7, 21 & 22 133MHz 66MHz 2x 6 & Open Closed Closed Closed 7, 21 & 22 150MHz 60MHz 2.5x 6 & Closed Closed Open Closed 7, 21 & 22 166MHz 66MHz 2.5x 6 & Closed Closed Closed Closed 7, 21 & 22 Note: Pins designated should be in the closed position. CPU VOLTAGE SELECTION Voltage JP17 3.3v (STD) Pins 1 & 2 closed 3.385v (VR) Pins 3 & 4 closed 3.525v (VRE) Pins 5 & 6 closed DMA CHANNEL SELECTION Channel JP4 JP6 1 Pins 1 & 2 closed Pins 1 & 2 closed 3 Pins 2 & 3 closed Pins 2 & 3 closed SERIAL PORT 2 SELECTION Setting JP2 Used as COM2 Pins 5 & 6, 7 & 8 closed Used as IR connector Open