
EFA CORPORATION

486 VIP

Processor  CX486S/AM486SX/SL80486SX/80486SX/CX486S2/AM486DX/CX486DX/
           SL80486DX/80486DX/CX486DX2/AM486DX2/SL80486DX2/80486DX2/
           80486DX4/P24D/Pentium Overdrive
Processor  25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz
Speed
Chip Set   Contaq
Max.       64MB
Onboard
DRAM
Cache      128/256/512/1024KB
BIOS       Award
Dimensions 330mm x 218mm
I/O        32-bit VESA local bus slots (2), 32-bit PCI slots (4), green PC
Options    connector
NPU        None
Options

[Image]

                                CONNECTIONS

  Purpose                   Location    Purpose                 Location

  External battery            J11       Turbo switch              J71

  Green PC connector          J13       Speaker                   J72

  Green PC LED                J33       Power LED & keylock       J73

  Reset switch                J69       32-bit PCI slots       PC1 - PC4

  Turbo LED                   J70       32-bit VESA local      SL1 & SL2
                                        bus slots

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     CMOS memory normal operation            J12           pins 1 & 2
                                                              closed

      CMOS memory clear                       J12           pins 2 & 3
                                                              closed

     Monitor type select color               J14             Closed

      Monitor type select monochrome          J14              Open

     Factory configured - do not             J15           pins 1 & 2
      alter                                                   closed

     Factory configured - do not             J19           pins 2 & 3
      alter                                                   closed

     Factory configured - do not             J20           pins 1 & 2
      alter                                                   closed

     Factory configured - do not             J22           pins 2 & 3
      alter                                                   closed

     Factory configured - do not             J23           pins 1 & 2
      alter                                                   closed

     Factory configured - do not             J25           pins 1 & 2
      alter                                                   closed

     Factory configured - do not             J32              Open
      alter

     CPU speed select normal speed           J76              Open

      CPU speed select slow speed             J76             Closed

                            DRAM CONFIGURATION

     Size         Bank 0         Bank 1         Bank 2          Bank 3

     1MB         (1) 256K x       NONE           NONE            NONE
                    36

     2MB         (1) 256K x     (1) 256K x       NONE            NONE
                    36             36

     2MB         (1) 512K x       NONE           NONE            NONE
                    36

     4MB         (1) 256K x     (1) 256K x     (1) 512K x        NONE
                    36             36             36

     4MB         (1) 512K x       NONE         (1) 512K x        NONE
                    36                            36

     4MB        (1) 1M x 36       NONE           NONE            NONE

     5MB         (1) 256K x    (1) 1M x 36       NONE            NONE
                    36

     6MB         (1) 256K x     (1) 256K x    (1) 1M x 36        NONE
                    36             36

     6MB         (1) 512K x       NONE        (1) 1M x 36        NONE
                    36

     8MB        (1) 1M x 36    (1) 1M x 36       NONE            NONE

     8MB        (1) 2M x 36       NONE           NONE            NONE

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

     12MB       (1) 1M x 36    (1) 1M x 36    (1) 1M x 36        NONE

     12MB       (1) 1M x 36       NONE        (1) 2M x 36        NONE

     16MB       (1) 1M x 36    (1) 1M x 36    (1) 2M x 36        NONE

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

     16MB       (1) 2M x 36       NONE        (1) 2M x 36        NONE

     16MB       (1) 4M x 36       NONE           NONE            NONE

     17MB        (1) 256K x    (1) 4M x 36       NONE            NONE
                    36

     18MB        (1) 256K x     (1) 256K x    (1) 4M x 36        NONE
                    36             36

     18MB        (1) 512K x       NONE        (1) 4M x 36        NONE
                    36

     20MB       (1) 1M x 36    (1) 4M x 36       NONE            NONE

     24MB       (1) 1M x 36    (1) 1M x 36    (1) 4M x 36        NONE

     24MB       (1) 2M x 36       NONE        (1) 4M x 36        NONE

     32MB       (1) 4M x 36    (1) 4M x 36       NONE            NONE

     32MB       (1) 8M x 36       NONE           NONE            NONE

     36MB       (1) 1M x 36    (1) 4M x 36    (1) 4M x 36        NONE

     36MB       (1) 1M x 36       NONE        (1) 8M x 36        NONE

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

                        DRAM CONFIGURATION (CONT)

     Size          Bank 0        Bank 1         Bank 2         Bank 3

     40MB       (1) 2M x 36       NONE        (1) 8M x 36       NONE

     48MB       (1) 4M x 36    (1) 4M x 36    (1) 4M x 36       NONE

     48MB       (1) 4M x 36       NONE        (1) 8M x 36       NONE

     64MB       (1) 4M x 36    (1) 4M x 36    (1) 4M x 36    (1) 4M x 36

     64MB       (1) 16M x 36      NONE           NONE           NONE

     64MB       (1) 4M x 36    (1) 4M x 36    (1) 8M x 36       NONE

     64MB       (1) 8M x 36       NONE        (1) 8M x 36       NONE

                      CACHE CONFIGURATION

      Size          Bank 0          Bank 1           TAG

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

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

     512KB       (4) 128K x 8        NONE        (1) 32K x 8

      1MB        (4) 128K x 8    (4) 128K x 8    (1) 128K x 8

                        CACHE JUMPER CONFIGURATION

    Size          J40            J41             J42             J43

   128KB       pins 1 & 2        Open         pins 2 & 3      pins 1 & 2
                closed                         closed          closed

   256KB       pins 2 & 3        Open         pins 1 & 2      pins 1 & 2
                closed                         closed          closed

   512KB       pins 2 & 3        Open         pins 2 & 3      pins 2 & 3
                closed                         closed          closed

    1MB        pins 2 & 3     pins 2 & 3        Open          pins 2 & 3
                closed          closed                         closed

                          CPU TYPE CONFIGURATION

      Type          J21      J47       J48      J49      J50        J51

     CX486S        2 & 3    1 & 2     1 & 2    2 & 3     Open      1 & 2

     AM486SX       1 & 2     Open     Open     1 & 2     Open      Open

    SL80486SX      1 & 2     Open     Open     2 & 3     Open      Open

     80486SX       1 & 2     Open     Open     1 & 2     Open      Open

     CX486S2       2 & 3    1 & 2     1 & 2    2 & 3     Open      1 & 2

     AM486DX       1 & 2     Open     Open     1 & 2    2 & 3      Open

     CX486DX       2 & 3     Open     1 & 2    2 & 3    2 & 3      1 & 2

    SL80486DX      1 & 2     Open     Open     2 & 3    2 & 3      Open

     80486DX       1 & 2     Open     Open     1 & 2    2 & 3      Open

    CX486DX2       2 & 3     Open     1 & 2    2 & 3    2 & 3      1 & 2

    AM486DX2       1 & 2     Open     Open     1 & 2    2 & 3      Open

   SL80486DX2      1 & 2     Open     Open     2 & 3    2 & 3      Open

    80486DX2       1 & 2     Open     Open     1 & 2    2 & 3      Open

  80486DX4 (2x)    1 & 2     Open     Open     2 & 3    2 & 3      Open

     80486DX4      1 & 2     Open     Open     2 & 3    2 & 3      Open
     (2.5x)

  80486DX4 (3x)    1 & 2     Open     Open     2 & 3    2 & 3      Open

    P24D (WT)      1 & 2     Open     Open     2 & 3    2 & 3      2 & 3

    P24D (WB)      1 & 2     Open     Open     2 & 3    2 & 3      2 & 3

    P24T (WT)      1 & 2     Open     Open     2 & 3    1 & 2      1 & 2

    P24T (WB)      1 & 2     Open     Open     2 & 3    1 & 2      1 & 2

  Note: Pins desingated should be in the closed position.

                      CPU TYPE CONFIGURATION (CONT)

       Type          J52        J53         J54        J55         J56

      CX486S        2 & 3      2 & 3       4 & 5      5 & 6       5 & 6

     AM486SX        2 & 3       Open       Open       Open        Open

    SL80486SX       2 & 3      1 & 2      3 & 4, 5    Open        Open
                                            & 6

     80486SX        2 & 3       Open       Open       Open        Open

     CX486S2        2 & 3      2 & 3       4 & 5      5 & 6       5 & 6

     AM486DX        1 & 2,      Open       Open       Open        Open
                    3 & 4

     CX486DX        1 & 2,     2 & 3       4 & 5      5 & 6       5 & 6
                    3 & 4

    SL80486DX       1 & 2,     1 & 2      3 & 4, 5    Open        Open
                    3 & 4                   & 6

     80486DX        1 & 2,      Open       Open       Open        Open
                    3 & 4

     CX486DX2       1 & 2,     2 & 3       4 & 5      5 & 6       5 & 6
                    3 & 4

     AM486DX2       1 & 2,      Open       Open       Open        Open
                    3 & 4

    SL80486DX2      1 & 2,     1 & 2      3 & 4, 5    Open        Open
                    3 & 4                   & 6

     80486DX2       1 & 2,      Open       Open       Open        Open
                    3 & 4

  80486DX4 (2x)     1 & 2,     1 & 2      3 & 4, 5    Open        2 & 3
                    3 & 4                   & 6

  80486DX4 (2.5x)   1 & 2,     1 & 2      3 & 4, 5    Open        4 & 5
                    3 & 4                   & 6

  80486DX4 (3x)     1 & 2,     1 & 2      3 & 4, 5    Open        1 & 2
                    3 & 4                   & 6

    P24D (WT)       1 & 2,    1 & 2, 3    3 & 4, 5   1 & 2, 4     Open
                    3 & 4       & 4         & 6        & 5

    P24D (WB)       1 & 2,    1 & 2, 3    3 & 4, 5   2 & 3, 4     Open
                    3 & 4       & 4         & 6        & 5

    P24T (WT)       1 & 2,     1 & 2      3 & 4, 5    1 & 2       Open
                    3 & 4                   & 6

    P24T (WB)       1 & 2,     1 & 2      3 & 4, 5    3 & 4       Open
                    3 & 4                   & 6

  Note: Pins desingated should be in the closed position.

                          CPU SPEED CONFIGURATION

     Speed          J16         J24         J26          J27       J28

     25MHz        Closed       2 & 3       Closed       1 & 2     2 & 3

     33MHz         Open        2 & 3       Closed       2 & 3     1 & 2

    40MHz 1        Open        2 & 3        Open        1 & 2     2 & 3

    40MHz 2        Open        1 & 2        Open        1 & 2     2 & 3

    40MHz 3        Open        1 & 2        Open        1 & 2     2 & 3

    50iMHz         1 & 2       2 & 3       Closed       1 & 2     2 & 3

    50MHz 4        Open        1 & 2        Open        2 & 3     1 & 2

    50MHz 5        Open        1 & 2        Open        2 & 3     1 & 2

    66iMHz         Open        2 & 3       Closed       2 & 3     1 & 2

    75iMHz        Closed       2 & 3       Closed       1 & 2     2 & 3

    100iMHz        Open        2 & 3       Closed       2 & 3     1 & 2

            Note: 1 = PCI 40mhz. 2 = PCI 33mhz & OCS2 =>33mhz. 3 = PCI
            20mhz & OSC2 =>empty. 4 = PCI 33mhz & OCS2 =>33mhz. 5 = PCI
            25mhz & OSC2 =>empty. Pins designated should be in the closed
            postion.

                      CPU SPEED CONFIGURATION (CONT)

    Speed        J29         J46         J57         J58          J59

    25MHz        Open        Open        Open        Open      pins 2 & 3
                                                                closed

    33MHz        Open        Open        Open        Open      pins 2 & 3
                                                                closed

   40MHz 1       Open        Open       Closed      Closed     pins 2 & 3
                                                                closed

   40MHz 2       Open       Closed      Closed      Closed     pins 2 & 3
                                                                closed

   40MHz 3      Closed      Closed      Closed      Closed     pins 2 & 3
                                                                closed

   50iMHz        Open        Open        Open        Open      pins 2 & 3
                                                                closed

   50MHz 4       Open       Closed      Closed      Closed     pins 2 & 3
                                                                closed

   50MHz 5      Closed      Closed      Closed      Closed     pins 2 & 3
                                                                closed

   66iMHz        Open        Open        Open        Open      pins 2 & 3
                                                                closed

   75iMHz        Open        Open        Open        Open      pins 2 & 3
                                                                closed

   100iMHz       Open        Open        Open        Open      pins 2 & 3
                                                                closed

            Note: 1 = PCI 40mhz. 2 = PCI 33mhz & OCS2 =>33mhz. 3 = PCI
            20mhz & OSC2 =>empty. 4 = PCI 33mhz & OCS2 =>33mhz. 5 = PCI
            25mhz & OSC2 =>empty.

               CPU VOLTAGE CONFIGURATION

          Voltage                       J74

    3.3v (80486DX4 only)     pins 3 & 5, 4 & 6 closed

            5.0v             pins 1 & 3, 2 & 4 closed

             PCI COMPLIANCE CONFIGURATION

           Slot                       J75

    PC1 (PCI compliant)       pins 10 & 11 closed

  PC1 (Non PCI compliant)     pins 11 & 12 closed

    PC2 PCI compliant)         pins 7 & 8 closed

  PC2 (Non PCI compliant)      pins 8 & 9 closed

    PC3 (PCI compliant)        pins 4 & 5 closed

  PC3 (Non PCI compliant)      pins 5 & 6 closed

    PC4 (PCI compliant)        pins 1 & 2 closed

  PC4 (Non PCI compliant)      pins 2 & 3 closed

       PCI IRQ CONFIGURATION (IRQ3)

         IRQ                  J31A

    PCI compliant      pins 1 & 2 closed

  Non PCI compliant    pins 2 & 3 closed

       PCI IRQ CONFIGURATION (IRQ4)

         IRQ                  J31B

    PCI compliant      pins 1 & 2 closed

  Non PCI compliant    pins 2 & 3 closed

       PCI IRQ CONFIGURATION (IRQ5)

         IRQ                  J31C

    PCI compliant      pins 1 & 2 closed

  Non PCI compliant    pins 2 & 3 closed

       PCI IRQ CONFIGURATION (IRQ6)

         IRQ                  J31J

    PCI compliant      pins 1 & 2 closed

  Non PCI compliant    pins 2 & 3 closed

       PCI IRQ CONFIGURATION (IRQ7)

         IRQ                  J31D

    PCI compliant      pins 1 & 2 closed

  Non PCI compliant    pins 2 & 3 closed

       PCI IRQ CONFIGURATION (IRQ9)

         IRQ                  J31I

    PCI compliant      pins 1 & 2 closed

  Non PCI compliant    pins 2 & 3 closed

       PCI IRQ CONFIGURATION (IRQ10)

         IRQ                  J31E

    PCI compliant      pins 1 & 2 closed

  Non PCI compliant    pins 2 & 3 closed

       PCI IRQ CONFIGURATION (IRQ11)

         IRQ                  J31F

    PCI compliant      pins 1 & 2 closed

  Non PCI compliant    pins 2 & 3 closed

       PCI IRQ CONFIGURATION (IRQ12)

         IRQ                  J31G

    PCI compliant      pins 1 & 2 closed

  Non PCI compliant    pins 2 & 3 closed

       PCI IRQ CONFIGURATION (IRQ14)

         IRQ                  J31K

    PCI compliant      pins 1 & 2 closed

  Non PCI compliant    pins 2 & 3 closed

  PCI slot 1 (IDE)     pins 2 & 4 closed

       PCI IRQ CONFIGURATION (IRQ15)

         IRQ                  J31H

    PCI compliant      pins 1 & 2 closed

  Non PCI compliant    pins 2 & 3 closed

