
FIRST INTERNATIONAL COMPUTER, INC.

LEO 486-GAV

Processor       80486SL/80486DX/80486DX2/80486DX4/Pentium Overdrive
Processor Speed 25/33/40/50(internal)/50/66(internal)MHz
Chip Set        VIA
Max. Onboard    64MB
DRAM
Cache           64/128/256KB
BIOS            Award
Dimensions      330mm x 218mm
I/O Options     32-bit VESA local bus slots (2), floppy drive interface,
                IDE interface, parallel port, PS/2 mouse port, (2), serial
                ports (2), VGA feature connector, VGA connector
NPU Options     None

[Image]

                                CONNECTIONS

  Purpose                 Location     Purpose                  Location

  PS/2 mouse port           CN2        VGA connector               J5
  (6-pin DIN)

  PS/2 mouse connector      CN4        Turbo LED                  J20

  Serial port 1             CN5        Turbo switch               J21

  Serial port 2             CN6        Reset switch               J22

  Parallel port             CN8        Speaker                    J23

  Floppy drive              CN9        Power LED & keylock        J24
  interface

  IDE interface             CN10       3.3V daughter board        J32
                                       (80486DX4 only)

  Video feature             CN11       Green status LED           J35
  connector

  External battery           J1        Hardware sleep             J36

  Green PC power             J3        32-bit VESA Local bus       S1
                                       slot

  IDE interface LED          J4        32-bit VESA Local bus       S2
                                       slot

                        USER CONFIGURABLE SETTINGS

                Function                      Jumper         Position

     IDE connector pin 27 open                 J2             Open

      IDE connector pin 27 linked to            J2            Closed
      IOCHRDY signal

     IDE connector pin 28 open                 J6             Open

      IDE connector pin 28 linked to            J6            Closed
      BALE signal

     CMOS memory normal operation              J7           pins 1 & 2
                                                              closed

      CMOS memory clear                         J7           pins 2 & 3
                                                              closed

     Factory configured - do not alter        J11           pins 1 & 2
                                                              closed

     Factory configured - do not alter        J25              N/A

     80486DX4 clock mode 2.5x                 J31           pins 1 & 2
                                                              closed

      80486DX4 clock mode 2x                   J31           pins 2 & 3
                                                              closed

      80486DX4 clock mode 3x                   J31             Open

     Factory configured - do not alter        J33           pins 2 & 3
                                                              closed

     Pentium Overdrive write-back             JC8           pins 1 & 2
                                                              closed

      Pentium Overdrive write-through          JC8           pins 2 & 3
                                                              closed

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

     Factory configured - do not alter        JX6           pins 2 & 3
                                                              closed

     Video upper physical address             JV5           pins 1 & 2
      decode input select SA (26..31)                         closed

      Video upper physical address             JV5           pins 2 & 3
      decode input select SAUP (1..2)                         closed

     Video DAC local access enabled           JV6           pins 1 & 2
                                                              closed

      Video DAC local access disabled          JV6           pins 2 & 3
                                                              closed

     Video memory address select 256KB        JV11          pins 1 & 2
                                                              closed

      Video memory address select 64KB         JV11          pins 2 & 3
                                                              closed

     Normal operation                         JV12          pins 1 & 2
                                                              closed

      Other IDE/VGA controller is              JV12          pins 2 & 3
      installed at S1                                         closed

     Normal operation                         JV13          pins 1 & 2
                                                              closed

      Other IDE/VGA controller is              JV13          pins 2 & 3
      installed at S2                                         closed

     CPU clock 1x                             JX1           pins 1 & 2
                                                              closed

      CPU clock 2x                             JX1           pins 2 & 3
                                                              closed

                             IDE CONFIGURATION

      IDE           Speed          J8             J9             J10

    Enabled           0         pins 2 & 3     pins 2 & 3     pins 1 & 2
                                 closed         closed          closed

    Enabled           1         pins 2 & 3     pins 1 & 2     pins 1 & 2
                                 closed         closed          closed

    Enabled           2         pins 1 & 2     pins 1 & 2     pins 1 & 2
                                 closed         closed          closed

    Disabled         N/A           N/A            N/A         pins 2 & 3
                                                                closed

                 PARALLEL PORT CONFIGURATION

        Port                  JG                   JH

        Input          pins 1 & 2 closed   pins 1 & 2 closed

       Output          pins 1 & 2 closed   pins 2 & 3 closed

   Bi-directional      pins 2 & 3 closed          N/A

                            VRAM CONFIGURATION

        Video                IRQ9              JV3              JV4

         Enabled          Disabled         pins 2 & 3       pins 1 & 2
                                             closed           closed

         Disabled           Enabled         pins 1 & 2       pins 2 & 3
                                             closed           closed

           VRAM MEMORY CONFIGURATION

      Size          Bank 0          Bank 1

      1MB         (2) 512K x 4       NONE

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

                             VIDEO MCLK SELECT

           MCLK                      J18                     J19

            50MHz                   Open                   Open

             52MHz                   Open                  Closed

             45MHz                  Closed                 Closed

             38MHz                  Closed                  Open

                           MONITOR REFRESH RATE

              Rate                        JV7                 JV8

          43Hz interlaced         pins 2 & 3 closed   pins 2 & 3 closed

         56Hz non-interlaced       pins 2 & 3 closed   pins 1 & 2 closed

         60Hz non-interlaced       pins 1 & 2 closed   pins 2 & 3 closed

        70/72Hz non-interlaced     pins 1 & 2 closed   pins 1 & 2 closed

                          VIDEO INTERLEAVE TIMING

            Select                      JV9                  JV10

          1 NanoSeconds         pins 1 & 2 closed     pins 1 & 2 closed

           2 NanoSeconds         pins 1 & 2 closed     pins 2 & 3 closed

           3 NanoSeconds         pins 2 & 3 closed     pins 1 & 2 closed

           4 NanoSeconds         pins 2 & 3 closed     pins 2 & 3 closed

                            DRAM CONFIGURATION

     Size         Bank 0         Bank 1         Bank 2         Bank 3

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

     5MB           NONE        (1) 256K x    (1) 4M x 36        NONE
                                   36

     5MB           NONE       (1) 4M x 36     (1) 256K x        NONE
                                                  36

     6MB       (1) 4M x 36     (1) 256K x     (1) 256K x        NONE
                                   36             36

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

                      DRAM CONFIGURATION (CONTINUED)

     Size         Bank 0         Bank 1         Bank 2         Bank 3

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

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

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

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

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

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

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

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

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

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

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

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

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

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

     19MB      (1) 4M x 36     (1) 256K x     (1) 256K x    (1) 256K x 36
                                   36             36

     19MB       (1) 256K x    (1) 4M x 36     (1) 256K x    (1) 256K x 36
                    36                            36

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

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

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

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

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

     21MB      (1) 4M x 36    (1) 1M x 36     (1) 256K x        NONE
                                                  36

     21MB       (1) 256K x    (1) 1M x 36    (1) 4M x 36        NONE
                    36

     21MB       (1) 256K x    (1) 4M x 36    (1) 1M x 36        NONE
                    36

     21MB      (1) 1M x 36     (1) 256K x    (1) 4M x 36        NONE
                                   36

     21MB      (1) 1M x 36    (1) 4M x 36     (1) 256K x        NONE
                                                  36

     22MB      (1) 4M x 36    (1) 1M x 36     (1) 256K x    (1) 256K x 36
                                                  36

     22MB      (1) 1M x 36    (1) 4M x 36     (1) 256K x    (1) 256K x 36
                                                  36

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

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

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

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

     25MB       (1) 256K x    (1) 4M x 36    (1) 1M x 36     (1) 1M x 36
                    36

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

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

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

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

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

     33MB      (1) 4M x 36    (1) 4M x 36     (1) 256K x        NONE
                                                  36

                      DRAM CONFIGURATION (CONTINUED)

     Size         Bank 0         Bank 1         Bank 2         Bank 3

     33MB       (1) 256K x    (1) 4M x 36    (1) 4M x 36        NONE
                    36

     33MB          NONE        (1) 256K x    (1) 4M x 36     (1) 4M x 36
                                   36

     33MB       (1) 256K x        NONE       (1) 4M x 36     (1) 4M x 36
                    36

     34MB      (1) 4M x 36    (1) 4M x 36     (1) 256K x    (1) 256K x 36
                                                  36

     34MB       (1) 256K x     (1) 256K x    (1) 4M x 36     (1) 4M x 36
                    36             36

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

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

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

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

     37MB       (1) 256K x    (1) 1M x 36    (1) 4M x 36     (1) 4M x 36
                    36

     37MB      (1) 1M x 36     (1) 256K x    (1) 4M x 36     (1) 4M x 36
                                   36

     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

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

     49MB       (1) 256K x    (1) 4M x 36    (1) 4M x 36     (1) 4M x 36
                    36

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

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

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

                    CACHE CONFIGURATION

     Size          Bank 0         Bank 1          TAG

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

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

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

                        CACHE JUMPER CONFIGURATION

      Size               JS1               JS2                 JS3

      64KB            pins 1 & 2        pins 1 & 2      pins 1 & 2 closed
                       closed             closed

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

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

                          CPU SPEED CONFIGURATION

    Speed           JK1            JK2            JK3            JK4

    25MHz        pins 2 & 3     pins 1 & 2     pins 2 & 3     pins 1 & 2
                  closed         closed         closed          closed

    33MHz        pins 2 & 3     pins 2 & 3     pins 1 & 2     pins 1 & 2
                  closed         closed         closed          closed

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

    50iMHz       pins 2 & 3     pins 1 & 2     pins 2 & 3     pins 1 & 2
                  closed         closed         closed          closed

    50MHz        pins 2 & 3     pins 1 & 2     pins 2 & 3     pins 2 & 3
                  closed         closed         closed          closed

    66iMHz       pins 2 & 3     pins 2 & 3     pins 1 & 2     pins 1 & 2
                  closed         closed         closed          closed

                          CPU TYPE CONFIGURATION

      Type           JC1       JC2         JC3        JC4         JC6

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

     CX486S         pins 2    pins 2      Open       pins 1      Closed
                     & 3       & 3                    & 2

     CX486S+        pins 1    pins 1      Open       pins 1       Open
                     & 2       & 2                    & 2

     CX487S         pins 1    pins 1      Open       pins 1       Open
                     & 2       & 2                    & 2

    AM486DXL        pins 1    pins 1      Open       pins 1      Closed
                     & 2       & 2                    & 2

     CX486DX        pins 1    pins 1      Open       pins 1       Open
                     & 2       & 2                    & 2

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

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

    80486DX4        pins 1    pins 1      Open       pins 1      Closed
                     & 2       & 2                    & 2

     Pentium        pins 1    pins 1     Closed      pins 2      Closed
    Overdrive        & 2       & 2                    & 3

  Note:Pins designated should be in the closed position.

                    CPU TYPE CONFIGURATION (CONTINUED)

      Type          JC5          RN40           RN41            RN46

    80486SX        Open           Not            Not        Not installed
                              installed       installed

     CX486S        Open       Installed          Not        Not installed
                                              installed

    CX486S+        Open       Installed          Not        Not installed
                                              installed

     CX487S        Open       Installed          Not        Not installed
                                              installed

    AM486DXL       Open           Not            Not          Installed
                              installed       installed

    CX486DX        Open       Installed          Not        Not installed
                                              installed

    80486DX        Open           Not            Not        Not installed
                              installed       installed

    80486DX2       Open           Not            Not        Not installed
                              installed       installed

    80486DX4      Closed          Not         Installed     Not installed
                              installed

     Pentium      Closed          Not            Not        Not installed
   Overdrive                  installed       installed

            CPU TYPE CONFIGURATION (MANUFACTURER)

        Type                 J17                  J34

        Intel          pins 1 & 2 closed   pins 1 & 2 closed

        Cyrix          pins 2 & 3 closed   pins 2 & 3 closed

                          CPU TYPE IRQ SELECTION

      Select             J13                JX2                JX5

      IRQ15           pins 2 & 3         pins 1 & 2         pins 1 & 2
                        closed            closed             closed

       SMI            pins 1 & 2         pins 2 & 3         pins 2 & 3
                        closed            closed             closed

  Note:Jumper pins 1 & 2 of J13 if JX2 and JX5 are set at SMI and you
  wish to use the IRQ15 function.

                           KEYBOARD CONFIGURATION

  Select     JX3   JX4       RN3          RN6          RN10        RN11

  External   pins  pins       Not      Installed        Not      Installed
             1 &    1 &   installed                 installed
              2     2

  Internal   pins  pins   Installed        Not      Installed       Not
             2 &    2 &                installed                 installed
              3     3

  Note:Pins designated should be in the closed position.

                  VESA WAIT STATE/BUS SPEED CONFIGURATION

    CPU speed        Wait states            JV1                JV2

     < 33MHz        0 wait states        pins 2 & 3         pins 2 & 3
                                          closed             closed

     > 33MHz         1 wait state        pins 1 & 2         pins 1 & 2
                                          closed             closed

                      PC87332 ECP DMA CHANNEL SELECT

      DREQ             DACK               JP1                 JP2

        1                1          pins 2 & 3 closed  pins 2 & 3 closed

        3                3          pins 1 & 2 closed  pins 1 & 2 closed

             NSS87311/312 BASE I/O ADDRESS SELECT

    Index Address        Data Address              JF

        26Eh                 26Fh          pins 1 & 2 closed

        398h                 399h          pins 2 & 3 closed

                     NSS87332 BASE I/O ADDRESS SELECT

   Index Address      Data Address           JF                 JG

        2Eh                2Fh            pins 1 & 2        pins 1 & 2
                                           closed             closed

       26Eh               26Fh            pins 1 & 2        pins 2 & 3
                                           closed             closed

       15Ch               15Dh            pins 2 & 3        pins 1 & 2
                                           closed             closed

       398h               399h            pins 2 & 3        pins 2 & 3
                                           closed             closed

