
SEANIX TECHNOLOGY, INC.

486VLP2

Processor        80486SX/IBM486DLC/80486DX/80486DX2/Pentium Overdrive
Processor Speed  25/33/40/50(internal)/50/66(internal)MHz
Chip Set         EFAR
Max. Onboard DRAM64MB
Cache            64/128/256KB
BIOS             ASI/MR
Dimensions       330mm x 218mm
I/O Options      32-bit VESA local bus slots (2)
NPU Options      None

[Image]

                                CONNECTIONS

  Purpose                  Location     Purpose                 Location

  External battery            P1        Speaker                    P5

  Reset switch                P2        Turbo switch               P6

  Power LED & keylock         P3        32-bit VESA local      SL1 & SL2
                                        bus slots

  Turbo LED                   P4

                        USER CONFIGURABLE SETTINGS

                 Function                     Jumper         Position

     Programming voltage select 5v            JP2           pins 1 & 2
                                                              closed

      Programming voltage select 12v           JP2           pins 2 & 3
                                                              closed

     Clock skew select same as CPU            JP12          pins 1 & 2
      clock                                                   closed

      Clock skew select delayed on gate        JP12          pins 2 & 3
      relative to CPU                                         closed

     Local ready select not delayed           JP16          pins 1 & 2
                                                              closed

      Local ready select delayed one           JP16          pins 2 & 3
      clock                                                   closed

     Battery type select internal              P1           pins 2 & 3
                                                              closed

      CMOS memory clear/external battery        P1           pins 1 & 2
                                                              closed

      Battery type select external              P1            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

     3MB        (1) 256K x     (1) 256K x     (1) 256K x        NONE
                    36             36             36

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

     7MB        (1) 256K x     (1) 256K x     (1) 256K x     (1) 1M x 36
                    36             36             36

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

     9MB        (1) 256K x    (1) 1M x 36    (1) 1M x 36        NONE
                    36

     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

     13MB       (1) 256K x    (1) 1M x 36    (1) 1M x 36     (1) 1M x 36
                    36

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

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

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

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

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

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

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

     28MB      (1) 1M x 36    (1) 1M x 36    (1) 4M x 36     (1) 1M x 36

     28MB      (1) 4M x 36    (1) 1M x 36    (1) 1M x 36     (1) 1M x 36

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

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

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

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

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

     52MB      (1) 1M x 36    (1) 4M x 36    (1) 4M x 36     (1) 4M x 36

     52MB      (1) 4M x 36    (1) 4M x 36    (1) 4M x 36     (1) 1M x 36

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

                    CACHE CONFIGURATION

     Size          Bank 0         Bank 1          TAG

     64KB        (4) 8K x 8     (4) 8K x 8    (1) 8K x 8

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

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

                        CACHE JUMPER CONFIGURATION

    Size          JP1             JP3            JP4             JP5

    64KB       pins 2 & 3      pins 1 & 2     pins 1 & 2        Open
                 closed         closed          closed

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

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

                          CPU TYPE CONFIGURATION

       Type            JP9           JP10          JP11          JP13

     80486SX        pins 1 & 2       Open       pins 2 & 3       Open
                      closed                      closed

    IBM486DLC       pins 2 & 3      Closed      pins 1 & 2      Closed
                      closed                      closed

     80486DX        pins 1 & 2       Open       pins 1 & 2      Closed
                      closed                      closed

     80486DX2       pins 1 & 2       Open       pins 1 & 2      Closed
                      closed                      closed

      Pentium       pins 1 & 2       Open       pins 1 & 2      Closed
    Overdrive         closed                      closed

         CPU SPEED CONFIGURATION

  Speed      JP6        JP7       JP8

  25MHZ      Open     Closed    Closed

  33MHz     Closed    Closed     Open

  40MHz     Closed    Closed    Closed

  50iMHz     Open     Closed    Closed

  50MHz     Closed     Open     Closed

  66iMHz    Closed    Closed     Open

      VESA WAIT STATE CONFIGURATION

     Wait states             JP15

    0 wait states     pins 1 & 2 closed

    1 wait state      pins 2 & 3 closed

         BUS SPEED CONFIGURATION

      CPU speed              JP14

      <= 33MHz        pins 1 & 2 closed

       > 33MHz        pins 2 & 3 closed

