Installing Geocomp 10.07 on Windows 3.1 and 3.11

  • Verify that the host computer meets the hardware specifications. A minimum of 560 KB of free base memory and 7 MB free XMS is required to run Geocomp 10 to its full capacity.
  • Verify that the Geocomp dongle is embossed “Sentinel C Version B” or “Sentinel CplusB”.
  • Modify DOS bootup files as follows:
    • Select Run… from the File Menu in Program Manager
    • Type SYSEDIT
    • Select OK
    • Edit C:\CONFIG.SYS to include at the top of the file:
      device=c:\windows\emm386.exe noems ram
      shell=c:\dos\ /p /e:2048
    • Also in C:\CONFIG.SYS, load other devices with devicehigh= to free up base memory
    • Edit C:\AUTOEXEC.BAT as follows:
      • Load a mouse driver with a line such as
      • Optionally, load DOSKEY with a line such as
        LH C:\DOS\DOSKEY
      • Add the new line

        near the end of the file before Windows is called

      • If you have a menu structure, adjust changes accordingly
    • Modify C:\WINDOWS\SYSTEM.INI as follows:
      • Find the section headed
      • Add to that section:
    • Exit System Editor, saving changes to all files
  • Close Program Manager
  • Reboot the computer
  • Select Run… from the File Menu in Program Manager
  • Browse to select GC10-16.BAT from the \16bit directory of the Geocomp 10.07 CD. This will install Geocomp 10 to C: with the default directory structure. If you haven’t got a CD, you will have to install on a PC that has, and copy the files over.
  • Click here to download the patch to Geocomp 10.
  • Install the patch by extracting from the zip using folder names. Extract to the root of the Geocomp software folder. For example, if your software folder is C:\GC10\, extract to C:\.
  • If you are using both Windows 3.11 for Workgroups and the Geocomp Urban Drainage module, see also Geocomp 10 User’s Guide Section 9.4 in C:\GC10\Docs\GC1007ug.pdf.
  • In Program Manager, create a Program Item with the following properties:
    • Description: Geocomp 10
    • Command line: C:\GC10\CFG\GC10-31.PIF
    • Working Directory: C:\GC10\DATA
    • Icon: C:\GC10\GC10.ICO GC10 icon
  • Run Geocomp 10 using the Program Item GC10 icon

Please also refer to Chapter 2 of the Geocomp 10 User’s Guide. This guide is installed with Geocomp 10 into C:\GC10\GC1007UG.PDF.