xv6/README
2006-09-03 15:10:33 +00:00

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xv6 is a re-implementation of Unix Version 6 (v6), which was developed
by Dennis Ritchie and Ken Thompson. xv6 follows the structure and
style of v6, but is implemented for a modern x86-based multiprocessor
using ANSI C.
xv6 is inspired by the following work by Lions about Unix version 6:
- Lions' Commentary on UNIX' 6th Edition, John Lions, Peer to Peer
Communications; ISBN: 1-57398-013-7; 1st edition (June 14, 2000). See
also http://pdos.csail.mit.edu/6.828/2006/v6.html, which provides
pointers to on-line resources for v6.
Code was used from the following sources:
JOS (asm.h, elf.h, mmu.h, bootasm.S, ide.c, and others)
Plan 9 (bootother.S, mp.h, mp.c, ioapic.h, lapic.c)
FreeBSD (ioapic.c)
The following people made contributions:
Russ Cox (context switching, locking)
Cliff Frey (MP)
Xiao Yu (MP)
If you spot errors or have suggestions for improvement, please send
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.