UNIDENTIFIED

TURBO XT

Processor         8088
Processor Speed   8/10MHz
Chip Set          None
Max. Onboard DRAM 640MB
Cache             None
BIOS              ERSO/DTK
Dimensions        330mm x 218mm
I/O Options       None
NPU Options       8087

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  Speaker                     P4       Turbo switch                JP7

  Turbo switch                JP5      Keylock                     JP8

  Turbo switch                JP6      Power LED & Turbo LED       JP9

                        USER CONFIGURABLE SETTINGS

              Function                  Jumper/Switch        Position

  »   Factory configured - do not            JP1                N/A
      alter

  »   Factory configured - do not       SW1/switch 1            Off
      alter

  »   NPU enabled                       SW1/switch 2            Off

      NPU disabled                      SW1/switch 2            On

                             DRAM CONFIGURATION

  Size    Bank 0  Bank 1    Bank    Bank    JP3     JP3A      JP4     JP4A
                             2       3

  256KB    (8)      (8)     (8)     (8)     Open    Closed   Open     Closed
          4164     4164    4164    4164

  256KB    (8)     NONE    NONE    NONE    Closed   Open     Closed   Open
          41256

  512KB    (8)      (8)    NONE    NONE    Closed   Open     Closed   Open
          41256   41256

  640KB    (8)      (8)     (8)     (8)    Closed   Open     Closed   Open
          41256   41256    4164    4164

           DRAM JUMPER CONFIGURATION

      Size        SW1/switch 3   SW1/switch 4

     128KB            Off             On

     192KB            On             Off

     256KB            Off            Off

              MONITOR TYPE SELECTION

      Type         SW1/switch 5     SW1/switch 6

      None              On               On

   Monochrome          Off              Off

  Color 40 x 25        Off               On

  Color 80 x 25         On              Off

                FLOPPY DRIVE CONFIGURATION

  Number of drives     SW1/switch 7        SW1/switch 8

         1                  On                  On

         2                  Off                 On

         3                  On                  Off

         4                  Off                 Off