ECS 150, Operating Systems Fall Quarter 2008
Program 2
Due Date: October 20, 2008 Points: 100
Programs
1. (30 points) Modify the MINIX kernel to print your group’s name when the system boots. Your boot banner
should look like this (but replace ”Matt Bishop” by your group’s name):
MINIX 3.1.1. Copyright 2006, Vrije Universiteit, Amsterdam, The Netherlands
Matt Bishop’s system
Executing in 32-bit protected mode.
Hint: Look for the word ”Copyright” in the kernel files. That will help you figure out where to print the required
line.
2. (70 points) Modify the MINIX kernel so that, whenever ˆA is pressed in cooked mode, the system prints ”Alert!”,
goes to the next line, and reprints the previously-entered line.
In the following, I pressed ˆA just after I typed ”hello”. What I typed is in a regular typeface, and what the
system typed is in a bold typeface. The cursor is after the ”hello” on the second line.
helloAlert!
hello
Hint: This is very much like what ˆR does, except that you don’t print the ˆR, and print ”Alert!” instead. So
look for where that action takes place, and use that code as an example.
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