UNIDENTIFIED

TURBO MAINBOARD

Processor         8088
Processor Speed   4.77/10MHz
Chip Set          None
Max. onboard DRAM 640KB
SRAM Cache        None
BIOS              Unknown
Dimensions        330mm x 218mm
I/O Options       None
NPU Options       8087

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  Speaker                    JP1       Power LED                JP5/1 & 2

  Keylock                    JP3       Turbo LED                JP5/3 & 4

  Reset switch               JP4       Turbo Switch               JP6

                        USER CONFIGURABLE SETTINGS

              Function                  Jumper/Switch         Position

  »   Factory configured - do not            JP7                N/A
      alter

  »   Factory configured - do not            JP8                N/A
      alter

  »   Parity enabled                         JP9               Closed

      Parity disabled                        JP9                Open

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

  »   NPU enabled                       SW1/switch 2            Off

      NPU disabled                      SW1/switch 2             On

  »   Factory configured - do not       SW1/switch 3            N/A
      alter

  »   Factory configured - do not       SW1/switch 4            N/A
      alter

                                      DRAM CONFIGURATION

  Size    Bank 0    Parity 0    Bank 1    Parity 1    Bank 2    Parity 2   Bank 3     Parity 3

  256KB   (8)41256  (1)41256     NONE       NONE       NONE      NONE       NONE       NONE

  256KB   (2)44256  (1)41256     NONE       NONE       NONE      NONE       NONE       NONE

  512KB   (8)41256  (1)41256   (8)41256   (1)41256     NONE      NONE       NONE       NONE

  512KB   (2)44256  (1)41256   (2)44256   (1)41256     NONE      NONE       NONE       NONE

  576KB   (8)41256  (1)41256   (8)41256   (1)41256   (8)41256   (1)41256    NONE       NONE

  576KB   (2)44256  (1)41256   (2)44256   (1)41256   (2)44256   (1)41256    NONE       NONE

  640KB   (8)41256  (1)41256   (8)41256   (1)41256   (8)41256   (1)41256   (8)41256   (1)41256

  640KB   (2)44256  (1)41256   (2)44256   (1)41256   (2)44256   (1)41256   (2)44256   (1)41256

  Note:When using 44256 or 4464 chips, insert the chips into the dual-size sockets.

                           DISPLAY CONFIGURATION

            Type                  SW1/switch 5           SW1/switch 6

  Enhanced graphics adapter            On                     On

   Color/graphics (40 x 20             Off                    On
            mode)

   Color/graphics (80 x 25             On                    Off
            mode)

  Monochrome display adapter           Off                   Off
           or both

                            DRIVE CONFIGURATION

  Numper of Installed Drives       SW1/switch 7          SW1/switch 8

      1 Drive installed                 On                    On

      2 Drives installed               Off                    On

      3 Drives installed                On                    Off

      4 Drives installed               Off                    Off