
INTEL CORPORATION

CLASSIC/PCI LPX

Processor      80486SX/80486SX2/80486DX2/80486DX4/Pentium Overdrive
Processor      25/50(internal)/66(internal)/100(internal)MHz
Speed
Chip Set       Intel
Max. Onboard   64MB
DRAM
Cache          128/256KB
BIOS           AMI
Dimensions     330mm x 218mm
I/O Options    32-bit PCI slots on riser card (2), floppy drive interface,
               IDE interface, parallel port, PS/2 mouse pobt, serial ports
               (2), VESA feature connector, VGA port
NPU Options    None

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  VGA port                   CN1       Turbo LED                   J2

  Parallel port              CN2       IDE interface LED           J3

  Serial port 2              CN3       Power LED & keylock         J4

  Serial port 1              CN4       Reset switch                J5

  PS/2 mouse port            CN5       Chassis fan power           J6

  IDE interface              CN6       Speaker                     J7

  Floppy drive interface     CN7       Turbo switch                J8

  VESA feature connector     CN8       Riser Card                  SL1

  Auliliary power             J1
  connector

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Password enabled                        J1F3           pins 1 & 2
                                                              closed

      Password disabled                       J1F3           pins 2 & 3
                                                              closed

     Monitor type select color               J1F4           pins 1 & 2
                                                              closed

      Monitor type select monochrome          J1F4           pins 2 & 3
                                                              closed

     CMOS memory normal operation            J1G1           pins 1 & 2
                                                              closed

      CMOS memory clear                       J1G1           pins 2 & 3
                                                              closed

     Setup entry enabled                     J1G2           pins 1 & 2
                                                              closed

      Setup entry disabled                    J1G2           pins 2 & 3
                                                              closed

     Flash BIOS write protect enabled        J1G3           pins 1 & 2
                                                              closed

      Flash BIOS write protect disabled       J1G3           pins 2 & 3
                                                              closed

     Normal boot enabled                     J1G4           pins 1 & 2
                                                              closed

      Recovery boot enabled                   J1G4           pins 2 & 3
                                                              closed

     Factory configured - do not alter       J4A1             Open

     Pentium Overdrive cache disabled        J4A2           pins 1 & 2
                                                              closed

      Pentium Overdrive cache enabled         J4A2           pins 2 & 3
                                                              closed

     CPU type select SL-enhanced             J5A2           pins 1 & 2
                                                              closed

      CPU type select non SL-enhanced         J5A2           pins 2 & 3
                                                              closed

     CPU type select non SX processor        J5A3           pins 1 & 2
                                                              closed

      CPU type select SX processor            J5A3           pins 2 & 3
                                                              closed

                DRAM CONFIGURATION

      Size            Bank 0           Bank 1

       1MB             NONE        (1) 256K x 36

       1MB        (1) 256K x 36         NONE

       2MB             NONE        (1) 512K x 36

       2MB        (1) 256K x 36    (1) 256K x 36

       2MB        (1) 512K x 36         NONE

       3MB        (1) 256K x 36    (1) 512K x 36

       3MB        (1) 512K x 36    (1) 256K x 36

       4MB             NONE         (1) 1M x 36

       4MB        (1) 512K x 36    (1) 512K x 36

       4MB         (1) 1M x 36          NONE

       5MB        (1) 256K x 36     (1) 1M x 36

       5MB         (1) 1M x 36     (1) 256K x 36

       6MB        (1) 512K x 36     (1) 1M x 36

       6MB         (1) 1M x 36     (1) 512K x 36

       8MB             NONE         (1) 2M x 36

       8MB         (1) 1M x 36      (1) 1M x 36

       8MB         (1) 2M x 36          NONE

       9MB        (1) 256K x 36     (1) 2M x 36

       9MB         (1) 2M x 36     (1) 256K x 36

      10MB        (1) 512K x 36     (1) 2M x 36

      10MB         (1) 2M x 36     (1) 512K x 36

      12MB         (1) 1M x 36      (1) 2M x 36

            DRAM CONFIGURATION (CONT)

      Size            Bank 0           Bank 1

      12MB         (1) 2M x 36      (1) 1M x 36

      16MB             NONE         (1) 4M x 36

      16MB         (1) 2M x 36      (1) 2M x 36

      16MB         (1) 4M x 36          NONE

      17MB        (1) 256K x 36     (1) 4M x 36

      17MB         (1) 4M x 36     (1) 256K x 36

      18MB        (1) 512K x 36     (1) 4M x 36

      18MB         (1) 4M x 36     (1) 512K x 36

      20MB         (1) 1M x 36      (1) 4M x 36

      20MB         (1) 4M x 36      (1) 1M x 36

      24MB         (1) 2M x 36      (1) 4M x 36

      24MB         (1) 4M x 36      (1) 2M x 36

      32MB             NONE         (1) 8M x 36

      32MB         (1) 4M x 36      (1) 4M x 36

      32MB         (1) 8M x 36          NONE

      33MB        (1) 256K x 36     (1) 8M x 36

      33MB         (1) 8M x 36     (1) 256K x 36

      34MB        (1) 512K x 36     (1) 8M x 36

      34MB         (1) 8M x 36     (1) 512K x 36

      36MB         (1) 1M x 36      (1) 8M x 36

      36MB         (1) 8M x 36      (1) 1M x 36

      40MB         (1) 2M x 36      (1) 8M x 36

      40MB         (1) 8M x 36      (1) 2M x 36

      48MB         (1) 4M x 36      (1) 8M x 36

      48MB         (1) 8M x 36      (1) 4M x 36

      64MB         (1) 8M x 36      (1) 8M x 36

                           CACHE CONFIGURATION

     Size          Bank 0         Bank 1          D1             TAG

     128KB      (4) 32K x 8        NONE       (1) 16K x 1    (1) 32K x 8

     256KB      (4) 32K x 8    (4) 32K x 8    (1) 16K x 1    (1) 32K x 8

                  CACHE JUMPER CONFIGURATION

        Size                 J5A4                 J5A5

        128KB          pins 2 & 3 closed   pins 2 & 3 closed

        256KB          pins 1 & 2 closed   pins 1 & 2 closed

                         CPU VOLTAGE CONFIGURATION

    Type          J1A1           J1A2            J2A2           J2A3

    5.0v       pins 2 & 3      pins 2 & 3     pins 2 & 3      pins 2 & 3
                 closed         closed          closed         closed

    3.3v       pins 1 & 2      pins 1 & 2     pins 1 & 2      pins 1 & 2
                 closed         closed          closed         closed

                   CPU SPEED CONFIGURATION

        Speed                J1F1                 J1F2

        25MHz          pins 2 & 3 closed   pins 2 & 3 closed

        33MHz          pins 1 & 2 closed   pins 1 & 2 closed

       50iMHz          pins 2 & 3 closed   pins 2 & 3 closed

       66iMHz          pins 1 & 2 closed   pins 1 & 2 closed

       100iMHz         pins 2 & 3 closed   pins 2 & 3 closed

                    VIDEO MEMORY UPGRADE CONFIGURATION

                Size                                Bank 0

                2MB                              (2) 256K x 16

  Note: This board has 1MB factory installed. The location is
  unidentified.

