CACHE COMPUTERS, INC.

386SX-25 (Model 316)


Processor               80386SX
Processor speed         20/25MHz
Chip Set                OPTI
Max. Onboard DRAM       16MB
Cache                   None
BIOS                    AMI/Cache
Dimensions              330.2mm x 218.4mm
I/O Options             Bus mouse port, game port, serial ports (2),
                        parallel port, floppy drive interface, IDE
                        interface
NPU options             80387SX

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  Auxiliary keyboard          J1       Game port                   P3

  External battery            J3       Bus mouse port              P4

  IDE interface LED           J13      IDE interface               P5

  Speaker                     J21      Floppy drive interface      P6

  Power LED & keylock         J22      Parallel port               P7

  Turbo LED                   JP3      Reset switch                S1

  Serial port 0               P1       Turbo switch                S2

  Serial port 1               P2

                        USER CONFIGURABLE SETTINGS

               Function                  Jumper/Switch        Position

  »   CMOS memory normal operation            JP1             pins 2 & 3
      (internal battery)                                       closed

      CMOS memory normal operation            JP1               Open
      (external battery)

      CMOS memory clear                       JP1             pins 1 & 2
                                                               closed

  »   Monitor type select color (AMI          JP2              Closed
      BIOS)

      Monitor type select monochrome          JP2               Open
      (AMI BIOS)

  »   Password enabled (Cache BIOS)           JP2              Closed

      Password disabled (Cache BIOS)          JP2               Open

  »   Floppy drive interface-(P6)            SW1/1               Off
      enabled

      Floppy drive interface-(P6)            SW1/1               On
      disabled

  »   IDE interface-(P5) enabled             SW1/2               Off

      IDE interface (P5) disabled            SW1/2               On

  »   Serial port 0 (P1) enabled             SW1/3               Off

      Serial port 0 (P1) disabled            SW1/3               On

  »   Serial port 1 (P2) enabled             SW1/4               Off

      Serial port 1 (P2) disabled            SW1/4               On

  »   Game port (P3) enabled                 SW1/5               Off

      Game port (P3) disabled                SW1/5               On

  »   Parallel port (P7) enabled             SW1/6               Off

      Parallel port (P7) disabled            SW1/6               On

  »   Bus mouse port (P4) enabled            SW1/7               Off

      Bus mouse port (P4) disabled           SW1/7               On

  »   Floppy drive interface (P6)              W3               Open
      address select 1F0-1F7

      Floppy drive interface (P6)              W3              Closed
      address select 170-177

  »   IDE address select 3F1-3F7               W4               Open

      IDE address select 371-377               W4              Closed

  »   Serial port 0 (P1) address               W5               Open
      select 3F8-3FF

      Serial port 0 (P1) address               W5              Closed
      select 3E8-3EF

  »   Serial port 1 (P2) address               W6               Open
      select 2F8-2FF

      Serial port 1 (P2) address               W6              Closed
      select 2E8-2EF

  »   Parallel port (P7) address               W7               Open
      select 378-37F

      Parallel port (P7) address               W7              Closed
      select 278-27F

                            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

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

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

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

     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

  BUS MOUSE INTERRUPT CONFIGURATION

     IRQ          W1          W2

    IRQ5         Open       Closed

    IRQ2        Closed       Open

    None         Open        Open