
YOUNG MICRO SYSTEMS, INC.

VEGA 486 GREEN PC

Processor  CX486SX/AMD80486SX/80486SX/CX487DX/AMD80486DX/80486DX

           80486DX2/80486DX4/Pentium Overdrive
Processor  25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz
Speed
Chip Set   Symphony Wagner
Max.       128MB
Onboard
DRAM
Cache      64/128/256/512/1024KB
BIOS       AMI/Phoenix
Dimensions 254mm x 218mm
I/O        32-bit VESA local bus slots (3), PS/2 mouse port
Options
NPU        None
Options

[Image]

                                CONNECTIONS

  Purpose                Location      Purpose                Location

  Power LED & keylock       J1         Turbo LED                 J5

  Speaker                   J2         PS/2 mouse port           J6

  Turbo switch              J3         Power suspend            JP15

  Reset switch              J4         32-bit VESA Local     SL1, SL2,SL3
                                       bus slots

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Factory configured - do not             J27              Open
      alter

     Factory configured - do not             J28              Open
      alter

     Factory configured - do not             J29              Open
      alter

     Factory configured - do not             J30              Open
      alter

     Factory configured - do not             J31              Open
      alter

     Factory configured - do not             J32              Open
      alter

     Factory configured - do not             J33              Open
      alter

     Factory configured - do not             J34              Open
      alter

     Factory configured - do not             JP3              Open
      alter

     Factory configured - do not             JP9              Open
      alter

     Tag RAM separated                       JP16          pins 1 & 2
                                                              closed

      Tag RAM combined                        JP16          pins 2 & 3
                                                              closed

     Factory configured - do not             JP17             Open
      alter

     Flash BIOS write protect enabled        JP18          pins 1 & 2
                                                              closed

      Flash BIOS write protect                JP18          pins 2 & 3
      disabled                                                closed

     Factory configured - do not             JP19             Open
      alter

     Factory configured - do not             JP22             Open
      alter

     Factory configured - do not             JP28             Open
      alter

     Factory configured - do not             JP29             Open
      alter

     Factory configured - do not             JP30             Open
      alter

     Factory configured - do not             JP31             Open
      alter

                            DRAM CONFIGURATION

     Size          Bank 0         Bank 1         Bank 2         Bank 3

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

      4MB         (1) 512K x     (1) 512K x       NONE           NONE
                     36             36

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

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

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

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

     16MB        (1) 1M 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

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

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

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

     96MB        (1) 8M x 36    (1) 8M x 36    (1) 4M x 36   (1) 4M x 36

     128MB       (1) 8M x 36    (1) 8M x 36    (1) 8M x 36   (1) 8M x 36

                            CACHE CONFIGURATION

     Size          Bank 0         Bank 1       TAG (U1)       TAG (U2)

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

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

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

     512KB       (4) 128K x        NONE       (1) 32K x 8    (1) 32K x 8
                     8

      1MB        (4) 128K x     (4) 128K x     (1) 128K x   (1) 128K x 8
                     8              8              8

                 CACHE JUMPER CONFIGURATION

   Size       JD1       JD2       JT1       JT2       JT3

   64KB      2 & 3     2 & 3     1 & 2     1 & 2     1 & 2

  128KB      1 & 2     1 & 2     2 & 3     1 & 2     1 & 2

  256KB      2 & 3     2 & 3     2 & 3     2 & 3     1 & 2

  512KB      1 & 2     1 & 2     2 & 3     2 & 3     2 & 3

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

  Note: Pins designated should be in the closed position.

                      CPU TYPE CONFIGURATION (CYRIX)

  Type      JP1    JP2     JP4    JP5      JP6     JP7     JP8      JP10

  486SX    Open    Open    Open    2 &   Closed    1 &    Closed    Open
  (1X)                             3                2

  486SX    Open    Open    Open    2 &   Closed    1 &    Closed    Open
  (2X)                             3                2

  487DX    Open    Open    Open    1 &   Closed    1 &    Closed    Open
  (1X)                             2                2

  487DX    Open    Open    Open    1 &   Closed    1 &    Closed    Open
  (2X)                             2                2

  Note: Pins designated should be in the closed position.

                      CPU TYPE CONFIGURATION (CYRIX)

   Type    JP11     JP12      JP13      JP23      JP24     JP41     JP42

   486SX   Open     Open     Closed    Closed    Closed    Open     Open
   (1X)

   486SX   Open    Closed    Closed    Closed    Closed    Open     Open
   (2X)

   487DX   1 & 2    Open     Closed    Closed    Closed    Open     Open
   (1X)

   487DX   1 & 2   Closed    Closed    Closed    Closed    Open     Open
   (2X)

  Note: Pins designated should be in the closed position.

                       CPU TYPE CONFIGURATION (AMD)

  Type     JP1       JP2      JP4     JP5    JP6      JP7    JP8    JP10

  486SX    Open     Closed   Open     2 &   Closed    Open   Open   Open
  (WT)                                 3

  486SX   Closed    Closed   Closed   2 &   Closed    Open   Open   Open
  (WB)                                 3

  486DX    Open     Closed   Open     2 &   Closed    Open   Open   Open
  (WT)                                 3

  486DX   Closed    Closed   Closed   2 &   Closed    Open   Open   Open
  (WB)                                 3

  Note: Pins designated should be in the closed position.

                       CPU TYPE CONFIGURATION (AMD)

   Type      JP11     JP12     JP13     JP23     JP24     JP41     JP42

   486SX     Open     Open     Open     Open     Open    2 & 3     2 & 3
   (WT)

   486SX     Open     Open     Open     Open     Open    2 & 3     2 & 3
   (WB)

   486DX    1 & 2     Open     Open     Open     Open    2 & 3     2 & 3
   (WT)

   486DX    1 & 2     Open     Open     Open     Open    2 & 3     2 & 3
   (WB)

  Note: Pins designated should be in the closed position.

                    CPU TYPE CONFIGURATION (INTEL 486)

    Type      JP1      JP2     JP4    JP5    JP6      JP7    JP8    JP10

    486SX     Open    Open     Open   2 &   Closed    Open   Open   Open
                                       3

    486SL     Open    Closed   Open   1 &   Closed    Open   Open   Open
                                       2

  486DX/DX2   Open    Open     Open   1 &   Closed    Open   Open   Open
                                       2

    486DX4    Open    Closed   Open   1 &   Closed    Open   Open   Open
    (2X)                               2

    486DX4    Open    Closed   Open   1 &   Closed    Open   Open   Open
    (3X)                               2

  Note: Pins designated should be in the closed position.

                    CPU TYPE CONFIGURATION (INTEL 486)

     Type      JP11    JP12    JP13     JP23      JP24     JP41     JP42

    486SX      Open    Open    Open    Closed    Closed    Open     Open

    486SL      1 & 2   Open    Open     Open      Open     Open     Open

  486DX/DX2    1 & 2   Open    Open    Closed    Closed    Open     Open

    486DX4     2 & 3   Open    Open     Open      Open     Open     Open
     (2X)

    486DX4     2 & 3   Open    Open     Open      Open     Open     Open
     (3X)

  Note: Pins designated should be in the closed position.

                 CPU TYPE CONFIGURATION (INTEL OVERDRIVE)

    Type       JP1      JP2      JP4     JP5    JP6    JP7    JP8    JP10

  Overdrive    Open    Closed    Open    1 &    Open   Open   Open    1 &
  (2X-WT)                                 2                           2

  Overdrive   Closed   Closed   Closed   1 &    Open   Open   Open    1 &
  (2X-WB)                                 2                           2

  Overdrive    Open    Closed    Open    1 &    Open   Open   Open   Open
  (3X-WT)                                 2

  Overdrive   Closed   Closed   Closed   1 &    Open   Open   Open   Open
  (3X-WB)                                 2

  Note: Pins designated should be in the closed position.

                 CPU TYPE CONFIGURATION (INTEL OVERDRIVE)

     Type       JP11     JP12    JP13     JP23    JP24     JP41     JP42

   Overdrive    2 & 3    Open    Open     Open    Open     Open     Open
    (2X-WT)

   Overdrive    2 & 3    Open    Open     Open    Open     Open     Open
    (2X-WB)

   Overdrive    2 & 3    Open    Open     Open    Open     Open     Open
    (3X-WT)

   Overdrive    2 & 3    Open    Open     Open    Open     Open     Open
    (3X-WB)

  Note: Pins designated should be in the closed position.

                 CPU TYPE CONFIGURATION

       Type               RN1                RN2

     CX 486SX        Not installed      Not installed

     CX 487DX          Installed        Not installed

     AMD 486SX       Not installed        Installed

     AMD 486DX         Installed          Installed

    Intel 486SX      Not installed      Not installed

    Intel 486SL        Installed          Installed

  Intel 486DX/DX2      Installed        Not installed

   Intel 486DX4        Installed          Installed

     Overdrive         Installed          Installed

                     CPU SPEED CONFIGURATION

   Speed      JP20       JP21       JP25       JP26       JP27

   25MHz      1 & 2      1 & 2     Closed      Open      Closed

   33MHz      2 & 3      1 & 2      Open       Open      Closed

   40MHz      2 & 3      2 & 3     Closed     Closed      Open

  50iMHz      1 & 2      1 & 2     Closed      Open      Closed

   50MHz      2 & 3      2 & 3      Open      Closed      Open

  66iMHz      2 & 3      1 & 2      Open       Open      Closed

  75iMHz      1 & 2      1 & 2     Closed      Open      Closed

  100iMHz     2 & 3      2 & 3      Open      Closed      Open

  Note: Pins designated should be in the closed position.

