Updated the top-level README with current details.

README.md

@@ -1,15 +1,19 @@
 # pdp7-unix
-This is a project to resurrect Unix on the PDP-7 from a scan of the original
-assembly code done by Norman Wilson.
-
-Right now the scans are in the Unix Archive at
+This is a project to resurrect Unix on the PDP-7 from scans of the original assembly
+code done by Norman Wilson. The scans of PDP-7 Unix are in the Unix Archive at
 http://www.tuhs.org/Archive/PDP-11/Distributions/research/McIlroy_v0/
-as the files 0*.pdf. We now need to convert these to machine-readable
-assembly code, write tools such as an assembler, a filesystem creation tool,
-and write from scratch missing things like a shell, ls etc.
+as the files 0*.pdf.
+
+Update early March 2016: We've written an assembler, most of a user-mode
+simulator and commented several source files. We now have these utilities
+running: cat, cp, chmod, chown, chrm and ls.
+
+Things to do: write a filesystem creation tool, write a shell, write the
+missing utilities, try to bring the system up on a PDP-7 system. We have
+a real PDP-7 and SimH as target platforms.
 
 The code in the original scans are (c) Novell who own the rights to the Unix
-source code. Everything that didn't come from the scanned pages are GPLv3.
+source code. Everything that didn't come from the scanned files is GPLv3.
 
 scans	  holds the unmodified OCR versions of the scanned files
 
@@ -17,6 +21,8 @@ src/cmd   holds the modified source code of the user-mode programs
 
 src/sys   holds the modified source code of the kernel
 
+src/other holds PDP-7 source code which did not come from the scanned files
+
 tools	  holds the source for the tools written to assist the project
 
 misc	  holds miscellaneous notes and information