
INTEL CORPORATION

CLASSIC/PCI EXPANDABLE DESKTOP

(I486 PROCESSOR/PCI)

Processor   80486SX/SL80486SX/80486SX2/SL80486DX/80486DX2/SL80486DX2/
            80486DX4/Pentium Overdrive
Processor   25/33/50(internal)/66(internal)/100(internal)MHz
Speed
Chip Set    Intel
Max.        64MB
Onboard
DRAM
Cache       128/256KB
BIOS        AMI
Dimensions  254mm x 218mm
I/O Options Parallel port, serial ports (2), 32-bit PCI slots (3), floppy
            drive interface, IDE interface
NPU Options None

[Image]

                                CONNECTIONS

  Purpose                Location      Purpose                Location

  Serial port 1             CN1        IDE interface LED    JP1 pins 10 -
                                                                 13

  Serial port 2             CN2        Turbo LED            JP1 pins 16 -
                                                                 17

  IDE interface             CN3        Chassis fan power     JP2 pins 6 -
                                                                  8

  Parallel port             CN4        Speaker              JP2 pins 10 -
                                                                 14

  Floppy drive              CN5        Turbo switch         JP2 pins 16 -
  interface                                                      17

  Reset switch          JP1 pins 1 &   32-bit PCI slots       PC1 - PC3
                             2

  Power LED &           JP1 pins 4 -
  keylock                    8

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Factory configured - do not alter       J1C1              N/A

     Pentium Overdrive cache disabled        J1C2           pins 1 & 2
                                                              closed

      Pentium Overdrive cache enabled         J1C2           pins 2 & 3
                                                              closed

     CPU type select SL-enhanced CPU         J1C3           pins 1 & 2
      installed                                               closed

      CPU type select non SL-enhanced         J1C3           pins 2 & 3
      CPU installed                                           closed

     CPU type select non 80486SX CPU         J1C4           pins 1 & 2
      installed                                               closed

      CPU type select 80486SX CPU             J1C4           pins 2 & 3
      installed                                               closed

     Password normal operation               J9D1           pins 1 & 2
                                                              closed

      Password clear                          J9D1           pins 2 & 3
                                                              closed

     Factory configured - do not alter       J9D2              N/A

     CMOS memory normal operation            J9E1           pins 1 & 2
                                                              closed

      CMOS memory clear                       J9E1           pins 2 & 3
                                                              closed

     Setup access enabled                    J9E2           pins 1 & 2
                                                              closed

      Setup access disabled                   J9E2           pins 2 & 3
                                                              closed

     Flash BIOS write protect enabled        J9E3           pins 1 & 2
                                                              closed

      Flash BIOS write protect disabled       J9E3           pins 2 & 3
                                                              closed

     Normal boot enabled                     J9E4           pins 1 & 2
                                                              closed

      Recovery boot enabled                   J9E4           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

                DRAM CONFIGURATION

      Size            Bank 0           Bank 1

       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         (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

      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          TAG            U1

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

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

                  CACHE JUMPER CONFIGURATION

        Size                 J8A1                 J8A2

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

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

                   CPU SPEED CONFIGURATION

        Speed                J1E1                 J1E2

        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 1 & 2 closed   pins 1 & 2 closed

                         CPU VOLTAGE CONFIGURATION

    Voltage         J2A1           J2A2          J2A3            J2A4

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

      5v         pins 2 & 3     pins 2 & 3     pins 2 & 3     pins 2 & 3
                   closed         closed        closed          closed

