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explain how to use

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README
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@ -23,5 +23,24 @@ email to Frans Kaashoek and Robert Morris
({kaashoek,rtm}@csail.mit.edu). This version is the very first one,
so don't be surprised if there are errors or the code is unclear.
The code in the files that constitute xv6 are copyrighted, 2006, Frans
Kaashoek, Robert Morris, and Russ Cox.
The code in the files that constitute xv6 are
Copyright 2006 Frans Kaashoek, Robert Morris, and Russ Cox.
To build xv6 on an x86 ELF machine (like Linux or FreeBSD), run "make".
On non-x86 or non-ELF machines (like OS X, even on x86), you will
need to install a cross-compiler gcc suite capable of producing x86 ELF
binaries. See http://pdos.csail.mit.edu/6.828/2006/tools.html.
Then run "make TOOLPREFIX=i386-jos-elf-".
To run xv6, you can use Bochs or QEMU, both PC simulators. Bochs makes
debugging easier, but QEMU is much faster.
To run in Bochs, run "make bochs" and then type "c" at the bochs prompt.
To run in QEMU, run "make qemu". Both log the xv6 screen output to
standard output.
To create a typeset version of the code, run "make xv6.pdf".
This requires the "mpage" text formatting utility.
See http://www.mesa.nl/pub/mpage/.
Have fun!