
UNIDENTIFIED

OPTi 386-33/40WB

Processor         80386DX (exact location is unknown)
Processor Speed   33/40MHz
Chip Set          OPTi
Max. Onboard DRAM 40MB
Cache             64KB
BIOS              AMI
Dimensions        330mm x 218mm
I/O Options       32-bit external memory card slot
NPU Options       80387DX/3167

[Image]

                                CONNECTIONS

  Purpose                Location     Purpose                  Location

  External battery         J10        32-bit external             S1
                                      memory card slot

  Power LED &              J23        Reset switch               SW1
  keylock

  Speaker                  J24        Turbo switch               SW2

  Turbo LED                JP4

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Monitor type select color               JP1             Closed

      Monitor type select monochrome          JP1              Open

     CMOS memory normal operation            JP2           pins 2 & 3
                                                              closed

      CMOS memory clear                       JP2           pins 1 & 2
                                                              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     (4) 1M x 9        NONE

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

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

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

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

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

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

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

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

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

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

  Note:The locations of Bank 2 & Bank 3 can be found on the external
  memory card.

[Image]

                            CACHE CONFIGURATION

     Size        Max. Cacheable     Bank 0        Bank 1          TAG

     32KB             8MB         (4) 8K x 8    (4) 8K x 8    (4) 4K x 4

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

     128KB            32MB        (4) 32K x 8   (4) 32K x 8   (4) 16K x 8

     256KB            64MB        (4) 32K x 8   (4) 32K x 8   (4) 16K x 8

                        CACHE JUMPER CONFIGURATION

   Size       JP5       JP6       JP7        JP8         JP9       JP10

   32KB      pins 1    pins 1    pins 1      Open       pins 2   pins 2 &
              & 2       & 2       & 2                    & 3        3

   64KB      pins 2    pins 1    pins 1      Open       pins 2   pins 1 &
              & 3       & 2       & 2                    & 3        2

  128KB      pins 2    pins 1    pins 2     Closed      pins 2   pins 1 &
              & 3       & 2       & 3                    & 3        2

  256KB      pins 2    pins 2    pins 2     Closed      pins 1   pins 1 &
              & 3       & 3       & 3                    & 2        2

  Note:Pins designated should be in the closed position.

     AT CLK SELECT

  AT Clock      JP3

  CLK2IN/6     Open

  CLK2IN/8    Closed

