UNIDENTIFIED

TURBO MAINBOARD MB-101

Processor         8088
Processor Speed   10MHz
Chip Set          None
Max. Onboard DRAM 640KB
Cache             None
BIOS              Unidentified
Dimensions        220mm x 220mm
I/O Options       None
NPU Options       8087

[Image]

                                CONNECTIONS

  Purpose                   Location    Purpose                  Location

  Power LED & keylock         CN1       Turbo switch               JP3

  Speaker                     CN3       Reset switch               JP4

  Turbo LED                   JP1

                        USER CONFIGURABLE SETTINGS

              Function                  Jumper/Switch         Position

  »   Parity check enabled                   JP2                Open

      Parity check disabled                  JP2               Closed

  »   Factory configured - do not           SW1/1               Off
      alter

  »   NPU disabled                          SW1/2               Off

      NPU enabled                           SW1/2               Off

                            DRAM CONFIGURATION

  Bank     256KB      256KB      512KB      512KB     640KB       640KB

  Bank      (8)       NONE        (8)       NONE        (8)       NONE
   0       41256                 41256                41256

  Bank     NONE       NONE        (8)       NONE        (8)       NONE
   1                             41256                41256

  Bank     NONE       NONE       NONE       NONE     (8) 4164     NONE
   2

  Bank     NONE       NONE       NONE       NONE     (8) 4164     NONE
   3

  Bank     NONE        (2)       NONE        (2)       NONE     (2) 44256
   4                  44256                 44256

  Bank     NONE       NONE       NONE        (2)       NONE     (2) 44256
   5                                        44256

  Bank     NONE       NONE       NONE       NONE       NONE     (2) 4464
   6

  Bank     NONE       NONE       NONE       NONE       NONE     (2) 4464
   7

   U9       (1)        (1)        (1)        (1)        (1)     (1) 41256
           41256      41256      41256      41256     41256

  U18      NONE       NONE        (1)        (1)        (1)     (1) 41256
                                 41256      41256     41256

  U27      NONE       NONE       NONE       NONE     (1) 4164   (1) 4164

  U36      NONE       NONE       NONE       NONE     (1) 4164   (1) 4164

  Note:If parity checking is disabled, then DRAM is not needed in U9,
  U18, U27, and U36.

  DRAM SWITCH CONFIGURATION

   Size     SW1/3     SW1/4

  256KB      Open     Open

  512KB     Closed    Open

  640KB     Closed   Closed

                FLOPPY DRIVE CONFIGURATION

  Drives installed         SW1/7               SW1/8

         1               (8) 41256             NONE

         2               (8) 41256             NONE

         3               (8) 4164              NONE

         4               (8) 4164              NONE

  MONITOR CONFIGURATION

  Type     SW1/5   SW1/6

   MGA     Off      Off

   CGA      On      Off

   EGA      On      On