IMAGRAPH CORPORATION

ITX SERIES

Category                   Video
Video Types Supported      MGA/CGA/XVGA
Video Processor            Texas Instruments TMS34020
Highest Resolution         1280 x 1024
Supported
Data Bus Type              16-bit ISA
Memory Type                DRAM/VRAM (factory installed)
Maximum Onboard Memory     2MB VRAM/16MB DRAM

[Image]

                                CONNECTIONS

        Purpose           Location           Purpose           Location

  15-pin analog video       CN1        Diagnostic header          J13
  port

  VGA pass-through          CN2        Daughterboard            P8-P10
                                       headers

  SYNC ON GREEN CONFIGURATION

      Mode           SW4/1

    Enabled            On

    Disabled          Off

                         VIDEO EMULATION SELECTION

            » Mode                    SW4/5                  SW4/6

  »          Disabled                  Off                    Off

  »             MDA                     On                    Off

  »             CGA                    Off                    On

                       EMULATION EPROM CONFIGURATION

                » Setting                                J4

  »               Installed                      Pins 1 & 2 closed

  »             Not installed                    Pins 2 & 3 closed

                     OUTPUT SYNC SIGNAL CONFIGURATION

                 » Mode                                  J1

  »             Composite sync                   Pins 1 & 2 closed

  »            Horizontal sync                   Pins 2 & 3 closed

                  PASS-THROUGH SYNC SIGNAL CONFIGURATION

                 » Mode                                  J5

  »             Composite sync                   Pins 1 & 2 closed

  »            Horizontal sync                   Pins 2 & 3 closed

                            INTERRUPT SELECTION

     » IRQ         J6       J7      J8      J9      J10     J11     J12

  »   Disabled    Open     Open    Open    Open    Open     Open    Open

  »      2/9      Open     Open    Open     Pins   Open     Open    Open
                                           2 & 3

  »       3       Open     Open    Open    Open    Open     Open    Pins
                                                                    2 & 3

  »       4       Open     Open    Open    Open    Open     Open    Pins
                                                                    1 & 2

  »       5       Open     Open    Open    Open    Open     Pins    Open
                                                            2 & 3

  »       6       Open     Open    Open    Open    Open     Pins    Open
                                                            1 & 2

  »       7       Open     Open    Open    Open     Pins    Open    Open
                                                   2 & 3

  »      10       Open     Open    Open     Pins   Open     Open    Open
                                           1 & 2

  »      11       Open     Open    Pins    Open    Open     Open    Open
                                   2 & 3

  »      12       Open     Open    Pins    Open    Open     Open    Open
                                   1 & 2

  »      14       Open     Pins    Open    Open    Open     Open    Open
                           2 & 3

  »      15        Pins    Open    Open    Open    Open     Open    Open
                  1 & 2

  Note: Pins designated are in the closed position.

                        BASE I/O ADDRESS SELECTION

       A total of 4096 memory address settings are available. The address
       is selected by setting the hexadecimal numerals on switches
       SW1-SW3. SW1 is the Most Significant Numeral, and SW3 is the Least
       Significant Numeral. For example, if SW1 = 2, SW2 = B, and SW3 =
       0, the address would be 2B0h.

                DRAM CONFIGURATION

      Size            Bank 0           Bank 1

       1MB        (1) 256K x 36         NONE

       2MB        (1) 256K x 36    (1) 256K x 36

       2MB        (1) 512K x 36         NONE

       3MB        (1) 512K x 36    (1) 256K x 36

       4MB        (1) 512K x 36    (1) 512K x 36

       4MB         (1) 1M x 36          NONE

       5MB         (1) 1M x 36     (1) 256K x 36

       6MB         (1) 1M x 36     (1) 512K x 36

       8MB         (1) 1M x 36      (1) 1M x 36

       8MB         (1) 2M x 36          NONE

       9MB         (1) 2M x 36     (1) 256K x 36

      10MB         (1) 2M x 36     (1) 512K x 36

      12MB         (1) 2M x 36      (1) 1M x 36

      16MB         (1) 2M x 36      (1) 2M x 36

  FACTORY CONFIGURED - DO NOT ALTER

   Jumper/Switch        Position

        J2            Unidentified

        J3            Unidentified

       SW4/2               N/A

       SW4/3               N/A

       SW4/4               N/A