
UNIDENTIFIED

NE486VL2

Processor        80486SX/80487SX/80486DX/80486DX2/Pentium Overdrive
Processor Speed  20/25/33/50(internal)/50/66(internal)MHz
Chip Set         Unidentified
Max. Onboard DRAM32MB
Cache            64/128/256KB
BIOS             AMI
Dimensions       330mm x 218mm
I/O Options      32-bit VESA local bus slots (2)
NPU Options      None

[Image]

                                CONNECTIONS

  Purpose                  Location     Purpose                 Location

  External battery            JP2       Turbo switch              JP15

  Reset switch                JP3       Turbo LED                 JP16

  Power LED & keylock         JP9       32-bit VESA local      SL1 & SL2
                                        bus slots

  Speaker                    JP10

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Battey type select internal             JP2           pins 1 & 2
                                                              closed

      Battery type select external            JP2             Closed

     Factory configured - do not             JP5              Open
      alter

     CMOS memory normal operation            JP6           pins 1 & 2
                                                              closed

      CMOS memory clear                       JP6           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

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

      16MB        (4) 4M x 9         NONE

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

      32MB        (4) 4M x 9      (4) 4M 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         JP8A            JP8B           JP8D            JP8E

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

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

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

                          CPU TYPE CONFIGURATION

         Type             JP12         JP13         JP29          JP30

   80486SX/DX(PQFP)     pins 2 & 3   pins 2 & 3   pins 2 & 3   pins 2 & 3
                         closed       closed       closed        closed

       80486SX          pins 2 & 3   pins 2 & 3   pins 2 & 3   pins 2 & 3
                         closed       closed       closed        closed

       80487SX          pins 1 & 2   pins 1 & 2   pins 2 & 3   pins 2 & 3
                         closed       closed       closed        closed

       80486DX          pins 1 & 2   pins 1 & 2   pins 1 & 2   pins 1 & 2
                         closed       closed       closed        closed

       80486DX2         pins 1 & 2   pins 1 & 2   pins 1 & 2   pins 1 & 2
                         closed       closed       closed        closed

         P23T           pins 1 & 2   pins 1 & 2   pins 2 & 3   pins 2 & 3
                         closed       closed       closed        closed

                          CPU SPEED CONFIGURATION

      Speed              JP7A              JP7B               JP7C

      20MHz           pins 2 & 3         pins 1 & 2         pins 1 & 2
                        closed            closed             closed

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

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

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

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

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

      VESA WAIT STATE CONFIGURATION

     Wait states            JP102

    0 wait states     pins 1 & 2 closed

    1 wait state      pins 2 & 3 closed

         BUS SPEED CONFIGURATION

      CPU speed             JP103

      <= 33MHz        pins 1 & 2 closed

       > 33MHz        pins 2 & 3 closed

