I can’t get the program working as I wanted on the BBC computers, but the school got new computers running MS-DOS 4 that are much easier to work and alter, especially since I already have the 3.30a manual at home.
The final version of Hahas (version 3) that I finished today doesn’t display anything on screen at all when it runs other than the c:/> that looks like the normal prompt, but isn’t. Behind the scenes it is adding to the autoexec.bat parts of the boot folder, so that the program will always run every time the computer turns on. I added in a few extra features so that it only displays the hahas occasionally, not every time a disk is put in, as it was getting too obvious. Lots of people in class started to notice the hahas and the computer teacher also wondered what they were. Also new is that it hides the file by prefixing it with a $ (dollar sign) so that although space on the floppy disk it is on will be missing, most of the idiots wont know why. I also renamed the version stored on the hard disk to call it expander.exe so that people wont suspect it as not being a real system file. It also copies the date and time of the msdos.sys file so that it looks like it has always been there.
I think I will update it next to make it just display a message on my birthday every year, but only once I leave the school otherwise I might get in a lot of trouble.