PIONEER COMPUTER, INC.

VANTAGE 486NC SX-20/25/33

Processor               80486SX/ODP486SX
Processor Speed         20/25/33/40(internal)/50(internal)/66(internal)MHz
Chip Set                OPTI
Max. Onboard DRAM       32MB
Cache                   None
BIOS                    Phoenix
Dimensions              240mm x 220mm
I/O Options             None
NPU Options             80487SX

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                   Location

  Turbo LED                   J2       Speaker                     J5

  Turbo switch                J3       Power LED & keylock         J6

  Reset switch                J4       External battery            J7

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   CMOS memory normal operation             JP3           pins 1 & 2
                                                              closed

      CMOS memory clear                        JP3           pins 2 & 3
                                                              closed

  »   80487SX or ODP486SX upgrade not          JP4           pins 1 & 2
      installed                                               closed

      80487SX or ODP486SX upgrade              JP4           pins 2 & 3
      installed                                               closed

  »   Factory configured - do not alter        JP6             Open

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

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

      16MB        (4) 4M x 9         NONE

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