
ADDTECH RESEARCH, INC.

4GLX3

Processor  CX486S/80486SX/80487SX/CX486DX/AMD486DX/80486DX/80486DX2/
           80486DX4/Pentium Overdrive
Processor  25/33/40(internal)/50(internal)/50/66(internal)/100(internal)MHz
Speed
Chip Set   Cypress
Max.       128MB
Onboard
DRAM
Cache      64/128/256KB
BIOS       AMI
Dimensions 330mm x 218mm
I/O        32-bit VESA local bus slots (2)
Options
NPU        None
Options

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  Turbo LED                  JP10      External battery           JP17

  Speaker                    JP11      Turbo switch               JP95

  Power LED & keylock        JP13      32-bit VESA Local bus   SL1 & SL2
                                       slots

  Reset switch               JP15

                        USER CONFIGURABLE SETTINGS

                Function                    Jumper           Position

     CPU type select Intel/AMD              JP2A           pins 1 & 2
                                                              closed

      CPU type select Cyrix                  JP2A           pins 2 & 3
                                                              closed

     CPU type select PGA                    JP12             Closed

      CPU type select PQFP                   JP12              Open

     CMOS memory normal operation           JP16           pins 1 & 2
                                                              closed

      CMOS memory clear                      JP16           pins 2 & 3
                                                              closed

              DRAM CONFIGURATION

      Size          Bank 0          Bank 1

      1MB         (4) 256K x 9       NONE

      2MB         (4) 256K x 9   (4) 256K x 9

      4MB         (4) 1M x 9         NONE

      5MB         (4) 256K x 9    (4) 1M x 9

      5MB         (4) 1M x 9     (4) 256K x 9

      8MB         (4) 1M x 9      (4) 1M x 9

      16MB        (4) 4M x 9         NONE

      17MB        (4) 256K x 9    (4) 4M x 9

      17MB        (4) 4M x 9     (4) 256K x 9

      20MB        (4) 1M x 9      (4) 4M x 9

      20MB        (4) 4M x 9      (4) 1M x 9

      32MB        (4) 4M x 9      (4) 4M x 9

      64MB        (4) 16M x 9        NONE

      65MB        (4) 256K x 9   (4) 16M x 9

      65MB        (4) 16M x 9    (4) 256K x 9

      68MB        (4) 1M x 9     (4) 16M x 9

      68MB        (4) 16M x 9     (4) 1M x 9

      80MB        (4) 4M x 9     (4) 16M x 9

      80MB        (4) 16M x 9     (4) 4M x 9

     128MB        (4) 16M x 9    (4) 16M x 9

                    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                 JP7                  JP8

        64KB           pins 2 & 3 closed   pins 2 & 4 closed

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

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

                          CPU TYPE CONFIGURATION

         Type                 JP2              JP3              JP4

    80486SX (PQFP)           Open              Open             Open

     80486SX (PGA)         pins 2 & 3          Open             Open
                            closed

        80487SX          pins 1 & 2, 3      pins 1 & 2         Closed
                          & 4 closed          closed

      80486DX/DX2        pins 1 & 2, 3      pins 2 & 3          Open
                          & 4 closed          closed

     DX4/Overdrive       pins 1 & 2, 3      pins 1 & 2         Closed
                          & 4 closed          closed

  Note: This mainboard was manufactured with either a PQFP socket or a
  PGA ZIF socket.

                          CPU SPEED CONFIGURATION

  Speed      ID3      JP5   JP5A   JP33    JP36     JP37    JP38    JP72

  25MHz      Open     2 &    4 &    2 &    Closed    1 &    2 &    Closed
                      3      5      4                2       3

  33MHz      Open     2 &    4 &    2 &    Closed    2 &    1 &     Open
                      3      5      4                3       2

  40MHz     Closed    1 &    3 &    2 &    Open      1 &    2 &     Open
                      2      5      3                2       3

  50iMHz     Open     2 &    4 &    2 &    Closed    1 &    2 &    Closed
                      3      5      4                2       3

  50MHz     Closed    1 &   N/A     1 &    Open      2 &    1 &     Open
                      2             2                3       2

  66iMHz     Open     2 &    4 &    2 &    Closed    2 &    1 &     Open
                      3      5      4                3       2

  100iMHz    Open     2 &    4 &    2 &    Closed    2 &    1 &     Open
                      3      5      4                3       2

  Note: Pins designated should be in the closed position. JP5 corresponds
  to PGA ZIF socket & JP5A corresponds to PQFP socket.

  VESA WAIT STATE CONFIGURATION

   Wait states          ID2

  0 wait states        Open

  1 wait state        Closed

