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I've just finished interrupts, nice keyboard-input (no scanf yet), and a videodriver (with printf). What shall I do now first? Memory management?

Memory Management and Scheduling will probably be the best thing to do next.

AR wrote: Memory Management and Scheduling will probably be the best thing to do next.

If you haven't done them and plan to do them, do them ASAP. They commonly require a rewrite.

scheduling --- you *do* mean task switching and management of Task Control Blocks?

It's because something like a round robin scheduler kicked by the timer interrupt can be implemented with a few lines of code, but there is *more* to it than only this.

If it helps you, take a look at

http://www.distantvoices.org/html/multitasking.html

It might reveal some secrets. I presume some knowledge in that text, so, if you have question, bother me either here or via mail. mystran has some tutorial about virtual memory management on his homepage, which covers la plupart of memory management chores. Tim Robinsons Memory Management tutorial is of help too. (check out our wiki for that)

Thanks for the link.. can you also recommend some links on the internet about memory management, or shall I just google a bit around..?

Bonafide has got several articles on Memory Management here.

I know how to implement basic paging, I've only no idea what it is :-[

What exactly don't you understand about paging?

does the wiki helps ?