
MICROMEDIA TECHNOLOGIES, INC.

PCI 486

Processor         80486SX/80486DX/80486DX2/Pentium Overdrive
Processor Speed   25/33/50(internal)/66(internal)MHz
Chip Set          Intel
Max. Onboard DRAM 128MB
Cache             64/128/256/512KB
BIOS              Phoenix
Dimensions        330mm x 218mm
I/O Options       PCI local bus slots (3)
NPU Options       None

[Image]

                                CONNECTIONS

  Purpose                  Location   Purpose                    Location

  Hard drive LED             CN1      SCSI connector               J25

  Speaker                    CN2      PCI local bus               PCI1

  Reset switch               CN3      PCI local bus               PCI2

  Power LED & keylock        CN4      PCI local bus               PCI3

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     CMOS memory normal operation            CN5           Pins 1 & 2
                                                              closed

      CMOS memory clear                       CN5           Pins 2 & 3
                                                              closed

     Factory configured - do not             J12              N/A
      alter

     SCSI interrupt select IRQ11             J14           Pins 2 & 3
                                                              closed

      SCSI interrupt select IRQ9              J14           Pins 1 & 2
                                                              closed

     Factory configured - do not             J15              N/A
      alter

     Factory configured - do not             J16              N/A
      alter

     Cache enabled                           J17           Pins 2 & 3
                                                              closed

      Cache disabled                          J17           Pins 1 & 2
                                                              closed

     SCSI terminator term power              J24             Closed
      source from system

      SCSI terminator term power              J24              Open
      source from peripheral

                          CPU TYPE CONFIGURATION

      Type          KC1         KC2        KC3         KC4         KC5

    80486SX         Open       Open        Open      Closed       Open

    80487SX         Open      Closed      Closed      Open       Closed

    80486DX        Closed      Open       Closed      Open       Closed

    ODP486SX        Open      Closed      Closed      Open       Closed

    80486DX2       Closed      Open       Closed      Open       Closed

     Pentium        Open      Closed      Closed      Open       Closed
   Overdrive

                        CACHE JUMPER CONFIGURATION

  Size        J5          J6         J7         J11      J18        J19

  64KB       Open        Open       Open       Pins 2   Pins 1     Pins 1
                                                & 3      & 2        & 2

  128KB      Open       Closed      Open       Pins 1   Pins 2     Pins 1
                                                & 2      & 3        & 2

  256KB      Open       Closed     Closed      Pins 1   Pins 1     Pins 2
                                                & 2      & 2        & 3

  512KB     Closed      Closed     Closed      Pins 1   Pins 2     Pins 2
                                                & 2      & 3        & 3

  Note:Pins designated should be in the closed position.

                   CPU SPEED CONFIGURATION

        Speed                J13                 J103

        25MHz          Pins 1 & 2 closed         Open

        33MHz          Pins 2 & 3 closed        Closed

       50i MHz         Pins 1 & 2 closed         Open

       66i MHz         Pins 2 & 3 closed        Closed

                      PCI INTERRUPT SELECTION

   PCI1     J36A      J39A     J40A      J42A      J43A     J113A

   IRQ3     Open      Open     Open      Open      Open     Closed

  IRQ10     Open     Closed    Open      Open      Open      Open

  IRQ11     Open      Open     Closed    Open      Open      Open

  IRQ14     Open      Open     Open      Closed    Open      Open

  IRQ15     Open      Open     Open      Open     Closed     Open

  IRQ25     Closed    Open     Open      Open      Open      Open

                      PCI INTERRUPT SELECTION

   PCI2     J36B      J39B     J40B      J42B      J43B     J113B

   IRQ3     Open      Open     Open      Open      Open     Closed

  IRQ10     Open     Closed    Open      Open      Open      Open

  IRQ11     Open      Open     Closed    Open      Open      Open

  IRQ14     Open      Open     Open      Closed    Open      Open

  IRQ15     Open      Open     Open      Open     Closed     Open

  IRQ25     Closed    Open     Open      Open      Open      Open

                      PCI INTERRUPT SELECTION

   PCI3     J36C      J39C     J40C      J42C      J43C     J113C

   IRQ3     Open      Open     Open      Open      Open     Closed

  IRQ10     Open     Closed    Open      Open      Open      Open

  IRQ11     Open      Open     Closed    Open      Open      Open

  IRQ14     Open      Open     Open      Closed    Open      Open

  IRQ15     Open      Open     Open      Open     Closed     Open

  IRQ25     Closed    Open     Open      Open      Open      Open

                        LOCAL BUS MASTER SELECTION

          Master                    J104                    J105

           PCI 3            Pins 2 & 3 closed        Pins 2 & 3 closed

            PCI 1            Pins 1 & 2 closed        Pins 1 & 2 closed

                        LOCAL BUS MASTER SELECTION

          Master                    J106                    J107

            SCSI             Pins 2 & 3 closed       Pins 2 & 3 closed

             PCI 2            Pins 1 & 2 closed       Pins 1 & 2 closed

                DRAM CONFIGURATION

      Size            Bank 0           Bank 1

       2MB        (2) 256K x 36         NONE

       4MB        (2) 256K x 36    (2) 256K x 36

       4MB        (2) 512K x 36         NONE

       6MB        (2) 256K x 36    (2) 512K x 36

       6MB        (2) 512K x 36    (2) 256K x 36

       8MB        (2) 512K x 36    (2) 512K x 36

       8MB         (2) 1M x 36          NONE

      10MB        (2) 256K x 36     (2) 1M x 36

      10MB         (2) 1M x 36     (2) 256K x 36

      12MB        (2) 512K x 36     (2) 1M x 36

      12MB         (2) 1M x 36     (2) 512K x 36

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

      16MB         (2) 2M x 36          NONE

      18MB        (2) 256K x 36     (2) 2M x 36

      18MB         (2) 2M x 36     (2) 256K x 36

      20MB        (2) 512K x 36     (2) 2M x 36

      20MB         (2) 2M x 36     (2) 512K x 36

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

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

      32MB         (2) 2M x 36      (2) 2M x 36

      32MB         (2) 4M x 36          NONE

      34MB        (2) 256K x 36     (2) 4M x 36

      34MB         (2) 4M x 36     (2) 256K x 36

      36MB        (2) 512K x 36     (2) 4M x 36

      36MB         (2) 4M x 36     (2) 512K x 36

      40MB         (2) 1M x 36      (2) 4M x 36

      40MB         (2) 4M x 36      (2) 1M x 36

      48MB         (2) 2M x 36      (2) 4M x 36

      48MB         (2) 4M x 36      (2) 2M x 36

      64MB         (2) 4M x 36      (2) 4M x 36

      64MB         (2) 8M x 36          NONE

      66MB        (2) 256K x 36     (2) 8M x 36

      66MB         (2) 8M x 36     (2) 256K x 36

      68MB        (2) 512K x 36     (2) 8M x 36

      68MB         (2) 8M x 36     (2) 512K x 36

      72MB         (2) 1M x 36      (2) 8M x 36

      72MB         (2) 8M x 36      (2) 1M x 36

      80MB         (2) 2M x 36      (2) 8M x 36

      80MB         (2) 8M x 36      (2) 2M x 36

      96MB         (2) 4M x 36      (2) 8M x 36

      96MB         (2) 8M x 36      (2) 4M x 36

      128MB        (2) 8M x 36      (2) 8M x 36

