We are going to run [B/D] interactively, simply by typing ``bd'' at the main system prompt (DOS or UNIX version), or by running the program bd.exe from Windows 3.1. After a few seconds, the program will load and will print a copyright message similar to that shown in figure 4, together with an indication of available memory and whether or not a maths co-processor is being used.
Figure 4: [B/D] start-up message
When the copyright message has printed, you will see a prompt such as ``BD>'', which means that [B/D] is awaiting a command from you. Now we are ready to begin.