
UNIDENTIFIED

386/25 CACHE

Processor         80386SX
Processor Speed   25MHz
Chip Set          OPTI
Max. Onboard DRAM 16MB
Cache             32/64KB (location unidentified)
BIOS              AMI
Dimensions        330mm x 220mm
I/O Options       Memory card
NPU Options       80387SX/3167

[Image]

                                CONNECTIONS

  Purpose                Location      Purpose                Location

  External battery          J1         Turbo switch         J14 (pins 7 &
                                                                 8)

  Speaker              J14 (pins 1 -   Power LED &              J15
                            4)         keylock

  Reset switch         J14 (pins 5 &   External memory           S1
                            6)         card

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Battery type select external             J1             Closed

      Battery type select internal             J1           pins 2 & 3
                                                              closed

      Monitor type select color                J2             Closed

      Monitor type select monochrome           J2              Open

     Factory configured - do not              J4           pins 2 & 3
      alter                                                   closed

     Factory configured - do not             J10           pins 1 & 2
      alter                                                   closed

     Factory configured - do not             J11           pins 1 & 2
      alter                                                   closed

                            DRAM CONFIGURATION

     Size          Bank 0        Bank 1         Bank 2         Bank 3

     512KB      (2) 256K x 9      NONE           NONE           NONE

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

     1.5MB      (2) 256K x 9   (2) 256K x 9   (2) 256K x 9      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

     2.5MB      (2) 256K x 9   (2) 1M x 9        NONE           NONE

     2.5MB       (2) 1M x 9    (2) 256K x 9      NONE           NONE

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

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

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

     3.5MB      (2) 256K x 9   (2) 256K x 9   (2) 1M x 9    (2) 256K x 9

     3.5MB      (2) 256K x 9   (2) 1M x 9     (2) 256K x 9  (2) 256K x 9

     3.5MB       (2) 1M x 9    (2) 256K x 9   (2) 256K x 9  (2) 256K x 9

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

     4.5MB      (2) 256K x 9   (2) 1M x 9     (2) 1M x 9        NONE

     4.5MB       (2) 1M x 9    (2) 1M x 9     (2) 256K x 9      NONE

     4.5MB       (2) 1M x 9    (2) 256K x 9   (2) 1M x 9        NONE

      5MB       (2) 256K x 9   (2) 256K x 9   (2) 1M x 9     (2) 1M x 9

      5MB       (2) 256K x 9   (2) 1M x 9     (2) 1M x 9    (2) 256K x 9

      5MB        (2) 1M x 9    (2) 1M x 9     (2) 256K x 9  (2) 256K x 9

     10MB        (2) 1M x 9    (2) 256K x 9   (2) 1M x 9    (2) 256K x 9

     6.5MB      (2) 256K x 9   (2) 1M x 9     (2) 1M x 9     (2) 1M x 9

     6.5MB       (2) 1M x 9    (2) 1M x 9     (2) 1M x 9    (2) 256K x 9

     6.5MB       (2) 1M x 9    (2) 256K x 9   (2) 1M x 9     (2) 1M x 9

      8MB        (2) 1M x 9    (2) 1M x 9     (2) 1M x 9     (2) 1M x 9

                  CACHE CONFIGURATION

     Size        Bank 0        Bank 1         TAG

     32KB      (4) 8K x 8       NONE       (1) 8K x 8

     64KB      (4) 8K x 8    (4) 8K x 8    (1) 8K x 8

  Note: The location of CACHE is unidentified.

                        CACHE JUMPER CONFIGURATION

      Size               J5                 J8                 J9

      32KB           pins 1 & 2            Open         pins 1 & 2 closed
                       closed

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

               CACHE MEMORY LINE CONFIGURATION

        Size                  J6                   J7

       4 Bytes              Closed         pins 1 & 2 closed

       8 Bytes              Closed         pins 2 & 3 closed

      16 Bytes               Open          pins 2 & 3 closed

       BIOS ROM TYPE CONFIGURATION

        TYPE                  J3

      32Kb x 8        pins 2 & 3 closed

      64KB x 8        pins 1 & 2 closed

