ok, i'll stop, or try to.... How long is it acceptable to be not-posted in for it not to be considered necroposting? I could never find a precedent...

If the last post is older than ~5-7 days, and you don't add anything worth a damn (which you haven't), then it is necroposting.

A true virus is an extremely simple thing to make. Simplest being one that just writes itself to the start of all the other (asm) programs on the calc, without worrying about saving the programs data.
But why the jollies intelligent programmers like yourselves would even consider thinking about maybe dreaming about writing one is beyond me!
Although I must admit seeing a friends face turn white while his/her calculator screen flashes "Cemetech Rulz!" would be rather funny!

1) It isn't really a virus unless it has a way to replicate or copy itself onto other calculators automatically
2) You couldn't copy to "every" ASM program - you'd have to make sure each was long enough
3) Why bother? Waste of time and energy.