
RELIALOGIC CORPORATION PRIVATE, LTD.

UM4980

Processor  CX486S/SL80486SX/80486SX/SL80486SX2/80486SX2/CX486DX/AM486DX/
           U5S/SL80486DX/80486DX/AM486DX2/CX486DX2/SL80486DX2/80486DX2/
           AM486DX4/80486DX4
Processor  25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz
Speed
Chip Set   UMC
Max.       64MB
Onboard
DRAM
Cache      128/256/512/1024KB
BIOS       Phoenix
Dimensions 254mm x 218mm
I/O        32-bit VESA local bus slots (3)
Options
NPU        None
Options

[Image]

                                CONNECTIONS

  Purpose                Location     Purpose                 Location

  External battery          J2        Power LED &           J90 pins 11 -
                                      keylock                    15

  Turbo LED            J90 pins 2 -   Speaker               J90 pins 17 -
                            3                                    20

  Green PC connector   J90 pins 4 -   Daughter board            JP90
                            5         connector

  Turbo switch         J90 pins 6 -   32-bit VESA local       SL1 - SL3
                            7         bus slots

  Reset switch         J90 pins 9 -
                            10

                        USER CONFIGURABLE SETTINGS

                Function                    Jumper           Position

     Flash BIOS voltage select 5v            JP1           pins 1 & 2
                                                              closed

      Flash BIOS voltage select 12v           JP1           pins 2 & 3
                                                              closed

     Keyboard type select external           JP3              Open

      Keyboard type select internal           JP3             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           NONE           NONE           NONE       (1) 512K x 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           NONE           NONE        (1) 512K x    (1) 512K x 36
                                                  36

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

                        DRAM CONFIGURATION (CONT)

     Size         Bank 0         Bank 1        Bank 2          Bank 3

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

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

  Note: If 8042 keyboard controller is not installed, maximum memory is
  32MB.

                      CACHE CONFIGURATION

      Size          Bank 0          Bank 1           TAG

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

     256KB        (4) 64K x 8        NONE        (1) 32K x 8

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

     512KB        (4) 64K x 8     (4) 64K 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) 64K x 8

                        CACHE JUMPER CONFIGURATION

   Size      JP4     JP5      JP6     JP10     JP11      JP12      JP13

   128KB    1 & 2    1 & 2   Open     Open     Open      Open      Open

   256KB    1 & 2    1 & 2   1 & 2    Open     Open      Open     Closed

   256KB    2 & 3    2 & 3   Open     Open     Open      Open     Closed

   512KB    2 & 3    2 & 3   2 & 3    Open    Closed     Open     Closed

   512KB    1 & 2    2 & 3   2 & 3    1 & 2   Closed     Open     Closed

    1MB     2 & 3    2 & 3   2 & 3    2 & 3   Closed    Closed    Closed

  Note: Pins designated should be in the closed position.

                      CPU TYPE CONFIGURATION

      Type             JP14             JP15            JP16

     CX486S        2 & 3, 4 & 5        2 & 3            Open

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

     80486SX           Open            2 & 3            Open

   SL80486SX2      1 & 2, 3 & 4        2 & 3            Open

    80486SX2           Open            2 & 3            Open

     CX486DX          2 & 3         1 & 2, 3 & 4        1 & 2

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

       U5S             Open            2 & 3            3 & 4

    SL80486DX      1 & 2, 3 & 4     1 & 2, 3 & 4        1 & 2

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

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

    CX486DX2          2 & 3         1 & 2, 3 & 4        1 & 2

   SL80486DX2      1 & 2, 3 & 4     1 & 2, 3 & 4        1 & 2

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

  80486DX2 (WB)    1 & 2, 3 & 4     1 & 2, 3 & 4        1 & 2

    AM486DX4           Open         1 & 2, 3 & 4        1 & 2

    80486DX4       1 & 2, 3 & 4     1 & 2, 3 & 4        1 & 2

  Note: Pins designated should be in the closed position.

                      CPU TYPE CONFIGURATION (CONT)

         Type                JP17             JP18              JP19

        CX486S           2 & 3, 4 & 5     1 & 2, 3 & 4,     1 & 2, 3 & 4,
                                              5 & 6            5 & 6

       SL80486SX             5 & 6            1 & 2            1 & 2

        80486SX              Open             2 & 3             Open

      SL80486SX2             5 & 6            1 & 2            1 & 2

       80486SX2              Open             2 & 3             Open

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

        AM486DX              Open             2 & 3             Open

          U5S                1 & 2            2 & 3            2 & 3

       SL80486DX             5 & 6            1 & 2            1 & 2

        80486DX              Open             2 & 3             Open

       AM486DX2              Open             2 & 3             Open

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

      SL80486DX2             5 & 6            1 & 2            1 & 2

       80486DX2              Open             2 & 3             Open

     80486DX2 (WB)       3 & 4, 5 & 6     1 & 2, 4 & 5      1 & 2, 4 & 5

       AM486DX4              Open             2 & 3             Open

       80486DX4              5 & 6            1 & 2            1 & 2

  Note: Pins designated should be in the closed position.

          CPU SPEED CONFIGURATION

   Speed      JP7        JP8        JP9

   25MHz     Closed      Open      Open

   33MHz     Closed     Closed    Closed

   40MHz     Closed     Closed     Open

  50iMHz     Closed      Open      Open

   50MHz      Open       Open     Closed

  66iMHz     Closed     Closed    Closed

  75iMHz     Closed      Open      Open

  100iMHz    Closed     Closed    Closed

  CPU SPEED CONFIGURATION (80486DX4 ONLY)

        Speed                  JP24

          2x            pins 2 & 3 closed

          3x                   Open

  CPU SPEED CONFIGURATION (AM486DX4 ONLY)

        Speed                 JP400

          2x                  Closed

          3x                   Open

  VESA WAIT STATE CONFIGURATION

   Wait states         JP26

  0 wait states        Open

  1 wait state        Closed

  BUS SPEED CONFIGURATION

  CPU speed        JP25

   <= 33MHz        Open

   > 33MHz        Closed

