
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 (CONT)

     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

