UNIDENTIFIED

386DX-25/33 SYSTEM

Processor                  80386DX
Processor Speed            25/33MHz
Chip Set                   Unidentified
Video Chip Set             Trident
Maximum Onboard Memory     32MB
Maximum Video Memory       1MB
Cache                      None
BIOS                       Phoenix
Dimensions                 378mm x 310mm
I/O Options                Floppy drive interface, game port, IDE
                           interface, parallel port, serial ports (2), VGA
                           port, riser slot, modem connector
NPU Options                80387DX/3167

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  Game port                  CN1       IDE interface              J24

  VGA port                   CN2       IDE interface LED          J25

  Parallel port              CN3       Floppy drive               J26
                                       interface LED

  Serial port 2              CN4       Power LED                  J27

  Serial port 1              CN5       Floppy drive               J28
                                       interface

  Chassis fan power           J4       Reset switch               J29

  External battery           J10       Riser slot                 SL1

  Modem connector            J23

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

      HDC enabled                              J2           Pins 2 & 3
                                                              closed

      HDC disabled                             J2           Pins 1 & 2
                                                              closed

      Game port enabled                        J3           Pins 1 & 2
                                                              closed

      Game port disabled                       J3           Pins 2 & 3
                                                              closed

      Monitor type select color                J5             Closed

      Monitor type select monochrome           J5              Open

      Serial port 2 enabled                    J6           Pins 1 & 2
                                                              closed

      Serial port 2 disabled                   J6           Pins 2 & 3
                                                              closed

      Parallel port enabled                    J7           Pins 1 & 2
                                                              closed

      Parallel port disabled                   J7           Pins 2 & 3
                                                              closed

      Serial port 2 COM select COM2            J8           Pins 1 & 2
                                                              closed

      Serial port 2 COM select COM4            J8           Pins 2 & 3
                                                              closed

      Parallel port LPT select LPT1            J9           Pins 1 & 2
                                                              closed

      Parallel port LPT select LPT2            J9           Pins 2 & 3
                                                              closed

      Serial port 1 enabled                   J11           Pins 1 & 2
                                                              closed

      Serial port 1 disabled                  J11           Pins 2 & 3
                                                              closed

      Serial port 1 COM select COM1           J12           Pins 1 & 2
                                                              closed

      Serial port 1 COM select COM3           J12           Pins 2 & 3
                                                              closed

  »   Monitor type select standard            J16           Pins 1 & 2
                                                              closed

      Monitor type select non standard        J16           Pins 2 & 3
      monochrome                                              closed

      Monitor type select non standard        J16              Open
      color

      Video mode select interlaced            J19             Closed

      Video mode select non interlaced        J19              Open

      IDE interface enabled                   J21           Pins 1 & 2
                                                              closed

      IDE interface disabled                  J21           Pins 2 & 3
                                                              closed

      Floppy drive interface enabled          J22           Pins 1 & 2
                                                              closed

      Floppy drive interface disabled         J22           Pins 2 & 3
                                                              closed

              DRAM CONFIGURATION

      Size          Bank 0          Bank 1

      1MB         (4) 256K x 9       None

      2MB         (4) 256K x 9   (4) 256K x 9

      4MB         (4) 1M x 9         None

      5MB         (4) 1M x 9     (4) 256K x 9

      8MB         (4) 1M x 9      (4) 1M x 9

      16MB        (4) 4M x 9         None

      17MB        (4) 4M x 9     (4) 256K x 9

      20MB        (4) 4M x 9      (4) 1M x 9

      32MB        (4) 4M x 9      (4) 4M x 9

  Note: Banks are interchangeable.

                   VIDEO MEMORY CONFIGURATION

    Size        Bank 0       Bank 1      Bank 2       Bank 3

    256KB     (2) 44256       None        None         None

    512KB     (2) 44256    (2) 44256      None         None

     1MB      (2) 44256    (2) 44256    (2) 44256    (2) 44256