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1. Christmas Personified as a Catgirl (moonman@shitposter.club)'s status on Saturday, 29-Sep-2018 14:12:52 JST Christmas Personified as a Catgirl

   in reply to
   @tsu more explicitly, it's a TSR (terminate, stay resident) program that sits in memory and is reactivated on a timer interrupt ("idle" handler http://www.ousob.com/ng/dos5/ng2bd7e.php ) so it's timeslicing between whatever you're running in the foreground, and the "background" printing process.
   
   they say it looks like it's doing something it can't, because it uses a reserved system interrupt to do the timeslicing, it's a one-off trick that isn't supposed to be used non-system utilities. That's my high-level understanding of it.
   
   That comment in my original post was in the DOS source code, lol.