
MAGITRONICS

A-BL2443G, A-BL2463, A-BL2483

Device     Mainboard
Type
Processor  CX486/80486SX/SL80486SX/CX486S/CX486DX/AM486DXL/

           80486DX/SL80486DX/CX486DX2/80486DX2/SL80486DX2/P24C/

           P24T
Processor  25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz
Speed
Chip Set   ALI
Video Chip None
Set
Maximum    64MB
Onboard
Memory
Maximum    None
Video
Memory
Cache      64/128/256KB
BIOS       Unidentified
Dimensions 254mm x 218mm
I/O        32-bit VESA local bus slots (3), green PC connector
Options
NPU        None
Options

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  External battery           BATT      Wake on modem              JG7
                                       connector

  Power LED & keylock        CN1       Green PC connector         JG8

  Speaker                    CN2       Green PC connector         JG9

  Reset switch               CN3       Green PC connector         JG10

  Turbo switch               CN4       Green PC connector         JG11

  Turbo LED                  CN5       32-bit VESA local bus   SL1  SL3
                                       slots

  Green PC connector         JG6

                        USER CONFIGURABLE SETTINGS

               Function                    Label           Position

      Battery type select internal         BATT        Pins 2 & 3 closed

      Battery type select external         BATT              Open

      CMOS memory clear                    BATT        Pins 3 & 4 closed

     Factory configured - do not           JX1          Unidentified
      alter

                            SIMM 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) 1M x 36        None           None           None

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

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

     5MB        (1) 256K x    (1) 1M x 36        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

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

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

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

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

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

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

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

     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

                        SIMM CONFIGURATION (CONT)

     Size         Bank 0        Bank 1         Bank 2          Bank 3

     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

     20MB       (1) 2M x 36   (1) 1M x 36    (1) 1M x 36     (1) 1M x 36

     20MB       (1) 1M x 36   (1) 2M x 36    (1) 2M x 36        None

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

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

     24MB       (1) 2M x 36   (1) 2M x 36    (1) 2M x 36        None

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

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

     28MB       (1) 1M x 36   (1) 2M x 36    (1) 2M x 36     (1) 2M x 36

     32MB       (1) 4M x 36   (1) 2M x 36    (1) 2M x 36        None

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

     32MB       (1) 2M x 36   (1) 2M x 36    (1) 2M x 36     (1) 2M x 36

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

     40MB       (1) 4M x 36   (1) 2M x 36    (1) 2M x 36     (1) 2M 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

     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           JS1            JS2            JS3             JS4

    64KB        Pins 1 & 2     Pins 1 & 2     Pins 1 & 2      Pins 1 & 2
                 closed          closed         closed         closed

    128KB       Pins 2 & 3     Pins 2 & 3     Pins 1 & 2      Pins 2 & 3
                 closed          closed         closed         closed

    256KB       Pins 2 & 3     Pins 1 & 2     Pins 2 & 3      Pins 2 & 3
                 closed          closed         closed         closed

                            CPU SPEED SELECTION

   Speed      JF1        JF2       JF3       JC10       JC11       JC13

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

   33MHz     2 & 3      2 & 3     1 & 2      1 & 2      1 & 2     1 & 2

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

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

   50MHz     2 & 3      1 & 2     2 & 3      2 & 3      2 & 3     2 & 3

  66iMHz     2 & 3      2 & 3     1 & 2      1 & 2      1 & 2     1 & 2

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

  100iMHz    2 & 3      2 & 3     1 & 2      1 & 2      1 & 2     1 & 2

  Note: Pins designated should be in the closed position.

                            CPU TYPE SELECTION

      Type          JC1       JC2       JC3      JC4      JC5       JC6

     CX486          Open     1 & 2     Open     2 & 3    2 & 3     2 & 3

    80486SX        Closed    1 & 2     Open     1 & 2     Open     2 & 3

   SL80486SX       Closed    1 & 2     Open     1 & 2     Open     2 & 3

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

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

    AM486DXL       Closed    1 & 2     2 & 3    1 & 2     Open     1 & 2,
                                                                   3 & 4

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

   SL80486DX       Closed    1 & 2     2 & 3    1 & 2     Open     1 & 2,
                                                                   3 & 4

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

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

   SL80486DX2      Closed    1 & 2     2 & 3    1 & 2     Open     1 & 2,
                                                                   3 & 4

      P24C         Closed    1 & 2     2 & 3    1 & 2     Open     1 & 2,
                                                                   3 & 4

      P24T         Closed    2 & 3     1 & 2    1 & 2    1 & 2     1 & 2,
                                                                   3 & 4

  Note: Pins designated should be in the closed position.

                        CPU TYPE SELECTION (CONT)

     Type        JC7      JC8      JC9      JC20        JX2        JX4

    CX486       2 & 3    Open     2 & 3     Open      Closed     Closed

   80486SX      Open     Open     Open      Open      Closed     Closed

  SL80486SX     Open     Open     Open     Closed     Closed     Closed

    CX486S      2 & 3    Open     2 & 3     Open      Closed     Closed

   CX486DX      Open     Open     2 & 3     Open      Closed     Closed

   AM486DXL     Open     Open     Open      Open      Closed     Closed

   80486DX      Open     Open     Open      Open      Closed     Closed

  SL80486DX     Open     Open     Open     Closed     Closed     Closed

   CX486DX2     Open     Open     2 & 3     Open      Closed     Closed

   80486DX2     Open     Open     Open      Open      Closed     Closed

  SL80486DX2    Open     Open     Open     Closed     Closed     Closed

     P24C       Open     Open     Open      Open       Open       Open

     P24T       Open     2 & 3    Open      Open      Closed     Closed

  Note: Pins designated should be in the closed position.

   CPU MULTIPLIER SELECTION (P24C ONLY)

     Multiplier              JX3

         2x           Pins 2 & 3 closed

         3x           Pins 1 & 2 closed

                              CPU SELECTION

    Type         JC12        JC21         JC22         JG2         JG3

     AMD        1 & 2        Open         Open        1 & 2       1 & 2

  AM486DXL      2 & 3        Open         Open        2 & 3       2 & 3

  CX486DX2      1 & 2       Closed       Closed       1 & 2       1 & 2

   CX486S       1 & 2       Closed       Closed       1 & 2       1 & 2

    Cyrix       1 & 2        Open        Closed       1 & 2       1 & 2

    Intel       1 & 2        Open         Open        2 & 3       2 & 3

  Intel - S     1 & 2        Open         Open        2 & 3       2 & 3

    P24C        1 & 2        Open         Open        1 & 2       1 & 2

    P24T        1 & 2       Closed        Open        2 & 3       2 & 3

  Note: Pins designated should be in the closed position.

                          CPU SELECTION (CONT)

    Type         JG4          JG5         JG16         JG19        JG20

     AMD        1 & 2        1 & 2        Open         Open        Open

  AM486DXL      2 & 3        2 & 3        Open         Open        Open

  CX486DX2      1 & 2        1 & 2        Open        Closed      1 & 2

   CX486S       1 & 2        1 & 2        Open        Closed      1 & 2

    Cyrix       1 & 2        1 & 2        Open        Closed      1 & 2

    Intel       2 & 3        2 & 3        Open         Open        Open

  Intel - S     2 & 3        2 & 3        Open         Open       2 & 3

    P24C        1 & 2        Open        Closed        Open        Open

    P24T        2 & 3        2 & 3        Open         Open        Open

  Note: Pins designated should be in the closed position.

  VL BUS WAIT STATE SELECTION

    Setting            J2

       0              Open

       1             Closed

  VL BUS SPEED SELECTION

    Speed          J1

  <= 33MHz        Open

   >33 MHz       Closed

