QDI COMPUTER, INC.

P486

Processor         80486SX/80487SX/80486DX
Processor Speed   33MHz
Chip Set          OPTI
Max. Onboard DRAM 64MB
Cache             64/256KB
BIOS              AMI
Dimensions        330mm x 220mm
I/O Options       None
NPU Options       4167

[Image]

                                CONNECTIONS

  Purpose                   Location    Purpose                  Location

  External battery            J11       Turbo LED                 JP11

  Power LED & keylock         J20       Reset switch               SW1

  Speaker                     J21       Turbo switch               SW2

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   CMOS memory normal operation             JP1           pins 2 & 3
                                                              closed

      CMOS memory clear                        JP1           pins 1 & 2
                                                              closed

  »   Monitor type select monochrome           JP2            Closed

      Monitor type select color                JP2             Open

  »   Factory configured - do not alter        JP6             Open

  »   Oscillator type select double            JP7           pins 2 & 3
      frequency                                               closed

      Oscillator type select single            JP7           pins 1 & 2
      frequency                                               closed

                            DRAM CONFIGURATION

     Size         Bank 0          Bank 1         Bank 2         Bank 3

     1MB        (4) 256K x 9       NONE           NONE           NONE

     2MB        (4) 256K x 9   (4) 256K x 9       NONE           NONE

     4MB        (4) 1M x 9         NONE           NONE           NONE

     5MB        (4) 256K x 9    (4) 1M x 9        NONE           NONE

     8MB        (4) 1M x 9      (4) 1M x 9        NONE           NONE

     12MB       (4) 1M x 9      (4) 1M x 9     (1) 1M x 36       NONE

     16MB       (4) 1M x 9      (4) 1M x 9     (1) 1M x 36   (1) 1M x 36

     16MB       (4) 4M x 9         NONE           NONE           NONE

     20MB       (4) 4M x 9      (4) 1M x 9        NONE           NONE

     24MB       (4) 1M x 9      (4) 1M x 9     (1) 4M x 36       NONE

     24MB       (4) 1M x 9      (4) 4M x 9     (1) 1M x 36       NONE

     28MB       (4) 1M x 9      (4) 1M x 9     (1) 1M x 36   (1) 4M x 36

     32MB       (4) 4M x 9      (4) 4M x 9        NONE           NONE

     36MB       (4) 1M x 9      (4) 4M x 9     (1) 4M x 36       NONE

     36MB       (4) 4M x 9      (4) 1M x 9     (1) 4M x 36       NONE

     36MB       (4) 4M x 9      (4) 4M x 9     (1) 1M x 36       NONE

     40MB       (4) 1M x 9      (4) 1M x 9     (1) 4M x 36   (1) 4M x 36

     40MB       (4) 4M x 9      (4) 1M x 9     (1) 4M x 36   (1) 1M x 36

     40MB       (4) 1M x 9      (4) 4M x 9     (1) 4M x 36   (1) 1M x 36

     40MB       (4) 4M x 9      (4) 4M x 9     (1) 1M x 36   (1) 1M x 36

     52MB       (4) 1M x 9      (4) 4M x 9     (1) 4M x 36   (1) 4M x 36

     52MB       (4) 4M x 9      (4) 1M x 9     (1) 4M x 36   (1) 4M x 36

     52MB       (4) 4M x 9      (4) 4M x 9     (1) 4M x 36   (1) 1M x 36

     64MB       (4) 4M x 9      (4) 4M x 9     (1) 4M x 36   (1) 4M x 36

                            CACHE CONFIGURATION

       Size              Bank 0             TAG             Dirty Bit

       64KB            (8) 8K x 8      (1) 8K x 8 at      (1) 64K x 1 at
                                            U34                U45

       256KB          (8) 32K x 8      (1) 32K x 8 at     (1) 64K x 1 at
                                            U34                U45

           CACHE JUMPER CONFIGURATION

   Size      JP8       JP9      JP10      JP12

   64KB     Open      Open      Open      Open

  256KB     Open     Closed    Closed    Closed

                          CPU TYPE CONFIGURATION

       Type               JP3               jp4                JP5

      80486SX             Open              Open            pins 2 & 3
                                                             closed

      80487SX          pins 1 & 2          Closed           pins 1 & 2
                         closed                              closed

      80486DX          pins 2 & 3          Closed           pins 1 & 2
                         closed                              closed