MICRONICS COMPUTERS, INC. HELIOS Device Type Mainboard Processor Pentium II Processor Speed 233/266/300/333/350/400MHz Chip Set Intel Video Chip Set None Maximum Onboard Memory 1GB (EDO & SDRAM supported) Maximum Video Memory None Cache 256/512KB (located on Pentium II CPU) BIOS Phoenix Dimensions 305mm x 244mm I/O Options 32-bit PCI slots (5), floppy drive interface, game/MIDI port, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2), USB connectors (2), ATX power connector, AGP slot, line in, line out, microphone in, audio in – CD-ROM NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location AGP slot AGP Reset switch J28/pins 22 & 23 ATX power ATX Speaker J28/pins 24 - connector 27 IDE interface 1 J7 CPU fan power 1 J30 IDE interface 2 J8 CPU fan power 2 J31 Floppy drive J9 Chassis fan power J32 interface IDE interface LED J10 I2C connector J33 PS/2 mouse port J11 Chassis intrusion J34 alarm USB connector 1 J12 Audio in – CD-ROM J35 USB connector 2 J12A Video audio input J36 Serial port 1 J13 Audio auxiliary J37 input Serial port 2 J14 Telephony J38 connector Parallel port J15 Game/MIDI port J39 PCI sideband J21 Microphone in J39A connector PCI sideband J22 Line in J39B connector Soft off power J28/pins 1 & Line out J39C supply 2 IDE interface LED J28/pins 13 - Audio line in J40 16 Power LED J28/pins 18 – 32-bit PCI slots PC1 – PC5 20 USER CONFIGURABLE SETTINGS Function Label Position » Flash BIOS write protect enabled W4 Pins 1 & 2 closed Flash BIOS write protect disabled W4 Pins 2 & 3 closed » CMOS memory normal operation W9 Pins 1 & 2 closed CMOS memory clear W9 Pins 2 & 3 closed » Soft off power supply enabled W10 Open Soft off power supply disabled W10 Closed » Sound enabled/disabled through BIOS W11 Closed Sound disabled through hardware W11 Open » CPU speed select from BIOS disabled W12 Open CPU speed select from BIOS enabled W12 Closed DIMM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 8MB (1) 1M x 64 None None None 16MB (1) 2M x 64 None None None 16MB (1) 1M x 64 (1) 1M x 64 None None 24MB (1) 2M x 64 (1) 1M x 64 None None 24MB (1) 1M x 64 (1) 1M x 64 (1) 1M x 64 None 32MB (1) 4M x 64 None None None 32MB (1) 2M x 64 (1) 2M x 64 None None 32MB (1) 1M x 64 (1) 1M x 64 (1) 1M x 64 (1) 1M x 64 40MB (1) 4M x 64 (1) 1M x 64 None None 48MB (1) 4M x 64 (1) 2M x 64 None None 48MB (1) 2M x 64 (1) 2M x 64 (1) 2M x 64 None 64MB (1) 2M x 64 (1) 2M x 64 (1) 2M x 64 (1) 2M x 64 64MB (1) 8M x 64 None None None 64MB (1) 4M x 64 (1) 4M x 64 None None 72MB (1) 8M x 64 (1) 1M x 64 None None 80MB (1) 8M x 64 (1) 2M x 64 None None 96MB (1) 8M x 64 (1) 4M x 64 None None 96MB (1) 4M x 64 (1) 4M x 64 (1) 4M x 64 None 128MB (1) 16M x 64 None None None 128MB (1) 8M x 64 (1) 8M x 64 None None 128MB (1) 4M x 64 (1) 4M x 64 (1) 4M x 64 (1) 4M x 64 136MB (1) 16M x 64 (1) 1M x 64 None None 144MB (1) 16M x 64 (1) 2M x 64 None None 152MB (1) 16M x 64 (1) 1M x 64 (1) 1M x 64 (1) 1M x 64 160MB (1) 16M x 64 (1) 4M x 64 None None 176MB (1) 16M x 64 (1) 2M x 64 (1) 2M x 64 (1) 2M x 64 192MB (1) 16M x 64 (1) 8M x 64 None None 192MB (1) 8M x 64 (1) 8M x 64 (1) 8M x 64 None 224MB (1) 16M x 64 (1) 4M x 64 (1) 4M x 64 (1) 4M x 64 256MB (1) 32M x 64 None None None 256MB (1) 16M x 64 (1) 16M x 64 None None 256MB (1) 8M x 64 (1) 8M x 64 (1) 8M x 64 (1) 8M x 64 272MB (1) 16M x 64 (1) 16M x 64 (1) 1M x 64 (1) 1M x 64 280MB (1) 32M x 64 (1) 1M x 64 (1) 1M x 64 (1) 1M x 64 288MB (1) 16M x 64 (1) 16M x 64 (1) 2M x 64 (1) 2M x 64 304MB (1) 32M x 64 (1) 2M x 64 (1) 2M x 64 (1) 2M x 64 DIMM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 Bank 3 320MB (1) 16M x 64 (1) 16M x 64 (1) 4M x 64 (1) 4M x 64 320MB (1) 16M x 64 (1) 8M x 64 (1) 8M x 64 (1) 8M x 64 352MB (1) 32M x 64 (1) 4M x 64 (1) 4M x 64 (1) 4M x 64 384MB (1) 16M x 64 (1) 16M x 64 (1) 16M x 64 None 448MB (1) 32M x 64 (1) 8M x 64 (1) 8M x 64 (1) 8M x 64 512MB (1) 32M x 64 (1) 32M x 64 None None 512MB (1) 16M x 64 (1) 16M x 64 (1) 16M x 64 (1) 16M x 64 640MB (1) 32M x 64 (1) 16M x 64 (1) 16M x 64 (1) 16M x 64 768MB (1) 32M x 64 (1) 32M x 64 (1) 32M x 64 None 1024MB (1) 32M x 64 (1) 32M x 64 (1) 32M x 64 (1) 32M x 64 Note: Board accepts EDO & SDRAM memory. CACHE CONFIGURATION Note: 256KB/512KB cache is located on the Pentium II CPU. USB SELECTION Setting W5 W6 W7 » USB 1 routed Pins 2 & 3 Pins 2 & 3 Pins 2 & 3 to J12 closed closed closed USB 1 routed Pins 1 & 2 Pins 1 & 2 Pins 1 & 2 to J1 closed closed closed