10/25/99This is version 1.1 of IPCalc.The program is designed to assist in designing IP network topologies, and to assign IP addresses to hosts in those networks.The program allows you to select an address class and a subnet mask. It will show various information about the address class and subnet, including the bits used, the number of subnets and hosts, etc.You can then select a particular IP address, and the program will display the network, subnet, and host addresses for that address. It will also show a list of the subnets for that address.The program is written in NSBasic. You need to install two packages: IPCalc itself, and the NSBasic runtime. If you already have NSBasic installed, you do not need to install the runtime. The program was designed to work in portrait mode on a 2100. It also works in landscape mode. It also works on a 120/130 running NOS 2.0.IPCalc is freeware. I am distributing it with the source code, for anyone that is interested in how the program works. If you have any improvements in the source code, or just suggestions for changes in the program, please send them to me:Changes in 1.11. Remove all zeros and all ones as valid subnets. This reduces the number of subnets by two for any number of subnet bits.2. Resize subnet list box to fit on MP130's and on landscape 2x00's.3. Since the resizing gave me some extra room on the 2x00 portrait screen, I added a handy reference of commonly-used TCP/IP ports. (Commonly used, in my humble opinion).Enjoy.Eric Schneck333 East 43rd StreetSuite 1014New York, NY  10018emschneck@aol.comTHIS PROGRAM IS SUPPLIED AS-IS, AND IS NOT GUARANTEED OR WARRANTEED IN ANY FASHION. USE AT YOUR OWN RISK!!!!!!