
UNIDENTIFIED

TURBO MAIN BOARD

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

[Image]

                                CONNECTIONS

  Purpose                Location      Purpose                Location

  Reset switch             JP1         Turbo LED           P6 pins 1 & 2

  Turbo LED                 P3         Reset switch           P6 pins

  Speaker                   P4         Keylock                P6 pins

  Turbo switch              P5         Turbo LED                 P7

                        USER CONFIGURABLE SETTINGS

             Function                  Jumper/Switch         Position

     Turbo enabled                          P5              pins 1 & 2
                                                              closed

      Turbo disabled                         P5              pins 3 & 4
                                                              closed

     Turbo enabled                        SW2/1                Off

      Turbo disabled                       SW2/1                On

     NPU disabled                         SW2/2                On

      NPU enabled                          SW2/2                Off

                       DRAM CONFIGURATION

    Size        Bank 0       Bank 1      Bank 2       Bank 3

    64KB       (9) 4164       NONE        NONE         NONE

    128KB      (9) 4164     (9) 4164      NONE         NONE

    192KB      (9) 4164     (9) 4164    (9) 4164       NONE

    256KB      (9) 4164     (9) 4164    (9) 4164     (9) 4164

    256KB     (9) 41256       NONE        NONE         NONE

    640KB     (9) 41256    (9) 41256    (9) 4164     (9) 4164

  DRAM SWITCH CONFIGURATION

   Size     SW2/3     SW2/4

   64KB       On       On

  128KB      Off       On

  192KB      Off       On

  256KB      Off       Off

  640KB      Off       Off

         DRAM SWITCH CONFIGURATION

         Size                  JP2

  Bank 0 & 1 = 41256         Closed

  Bank 2 & 3 = 4164          Closed

        DRAM SWITCH CONFIGURATION

        Size                 JP2

  Bank 0 & 1 = 4164          Open

  Bank 2 & 3 = 4164          Open

              MONITOR CONFIGURATION

      Type            SW2/5            SW2/6

   Monochrome          Off              Off

  40 x 25 color        Off               On

  80 x 25 color         On              Off

  FLOPPY DRIVE CONFIGURATION

   Type     SW2/7      SW2/8

    1         On        On

    2        Off        On

    3         On        Off

    4        Off        Off


