For most, if not all, Macintosh computers there are credits or messages in the ROM, although they may not be in the same place. To find them type DMA 40800118 999 (display memory in ASCII from location 40800118 and on up) and keep pushing return until you see something. If you reach 408A... you should stop because then it gets pretty boring and I don’t think there is anything past there. Some computers will have the “What are you staring at?” message, and others will have the messages I found on my 840AV (look at Apple Systems); or both; or niether. It is possible to find things out of the range I mentioned so feel free to look. You can always return to the desktop by simply typing G and pushing Return. In some earlier versions of MacsBug DMA does not work; simply type DM instead. The both do the same thing. MacsBug is not case sensitive, so you don’t have to use caps. You should try most of the locations below for the Performa, Powerbook, or any system that is, or closely resembles, yours.
Using MacsBug
You should be able to find MacsBug almost anywhere. I got mine off of AOL, but have seen it in other places. Place MacsBug in your system folder; it is not an application. You might need to put the Debugger Prefs Resources in the preferences folder, although I think the actual preferences are built in. Simply restart and push the sequence of keys that would normally get you to the debugger. From there do as the egg says.
Very often your computer will freeze when making mistakes or using the command “G (any number)”. You will probably return to MacsBug but will have to restart to continue work. While running MacsBug, do not have an application open and save all work. Do not leave MacsBug on for a long time or it could result in screen burn in (extensions don’t effect it). Finally, MacsBug is a risky application. You should not fool with it unless you know what your doing. Its whole purpose is to screw with your system.
