UNIDENTIFIED

OPTI-P9

Processor         80386SX
Processor Speed   16/20MHz
Chip Set          OPTI
Max. Onboard DRAM 16MB
Cache             None
BIOS              AMI
Dimensions        220mm x 220mm
I/O Options       None
NPU Options       80387SX

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                   Location

  Turbo switch                J1       Speaker                     J4

  Turbo LED                   J2       Power LED & keylock         J5

  Reset switch                J3       External battery            JP2

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   Turbo mode enabled                       J1              Open

      Normal mode enabled CLK2/6 OR            J1             Closed
      CLK2/4

  »   Monitor type select monochrome           JP1             Open

      Monitor type select color                JP1            Closed

  »   CMOS memory normal operation             JP2          pins 2 & 3
                                                              closed

      CMOS memory clear                        JP2          pins 3 & 4
                                                              closed

  »   NPU asynchronous with CPU                JP3            Closed

      NPU synchronous with CPU                 JP3             Open

                            DRAM CONFIGURATION

     Size         Bank 0         Bank 1         Bank 2         Bank 3

     1MB        (2) 256K x 9   (2) 256K x 9      NONE           NONE

     2MB        (2) 256K x 9   (2) 256K x 9   (2) 256K x 9  (2) 256K x 9

     2MB        (2) 1M x 9        NONE           NONE           NONE

     3MB        (2) 256K x 9   (2) 256K x 9   (2) 1M x 9        NONE

     4MB        (2) 1M x 9     (2) 1M x 9        NONE           NONE

     6MB        (2) 1M x 9     (2) 1M x 9     (2) 1M x 9        NONE

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

     10MB       (2) 1M x 9     (2) 4M x 9        NONE           NONE

     12MB       (2) 1M x 9     (2) 1M x 9     (2) 4M x 9        NONE

     16MB       (2) 4M x 9     (2) 4M x 9        NONE           NONE

                            DRAM CONFIGURATION

  Size    Bank   Parity    Bank   Parity   Bank   Parity    Bank   Parity
           0       0        1       1       2       2        3       3

  256KB

  256KB

  512KB

  512KB

  576KB

  576KB

  640KB

  640KB

  Note:When using 44256 or 4464 chips, insert the chips into the
  dual-size sockets.

                            CACHE CONFIGURATION

     Size        Max Cachable      Bank 0        Bank 1          TAG

     64KB             8MB        (4) 8K x 8    (4) 8K x 8     (2) 16K x 4

     128KB           16MB        (4) 32K x 8      NONE        (2) 16K x 4

     256KB           32MB        (4) 32K x 8   (4) 32K x 8    (2) 16K x 4

                        CACHE JUMPER CONFIGURATION

    Size          W3              W4             W5              W6

    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 1 & 2
                closed          closed         closed          closed

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

           VESA CPU TYPE (ID0 & ID1) CONFIGURATION

      CPU Type            JP1 (ID0)            JP2 (ID1)

        80386          pins 2 & 3 closed   pins 1 & 2 closed

        80486          pins 1 & 2 closed   pins 2 & 3 closed

            VESA WAIT STATE/BUS SPEED (ID2 & ID3) CONFIGURATION

    CPU speed        Wait states         JP4 (ID3)          JP5 (ID2)

     < 33MHz        0 wait states        pins 1 & 2         pins 1 & 2
                                          closed             closed

     > 33MHz         1 wait state        pins 2 & 3         pins 2 & 3
                                          closed             closed

                VESA ID4 CONFIGURATION

          Setting                  JP6 (ID4)

  Reserved for future use      pins 2 & 3 closed

               MISCELLANEOUS TECHNICAL NOTE

  Note:Pins designated should be in the closed position.