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121 Commits

Author SHA1 Message Date
Warren Toomey
f63ad33d10 This is the beginnings of a alternative version of the PDP-7 Unix 
system which corresponds to a later development point, around mid-1971,
where the system had lost the "dd" directory and gained . and ..
entries. This is close to the system as described in
http://www.tuhs.org/Archive/PDP-11/Distributions/research/McIlroy_v0/UnixEditionZero.txt
except there are no pathnames.

To use this version: cd build; make alt; make altrun
 2016-03-21 14:28:50 +10:00
Warren Toomey
b9fa7fb4fb Fix up the link count code. 2016-03-19 14:37:23 +10:00
Warren Toomey
e44bc6daa3 Added note about fsck7. 2016-03-19 07:27:18 +10:00
Warren Toomey
b232a4b1a6 Added simple code coverage output to a7out. Added a few ed comments. 2016-03-19 07:25:07 +10:00
Warren Toomey
17a828cfcd mkfs: I moved the order of ., .. and dd around to me more pleasing to the eye. I also 
added some simple link count code.
 2016-03-19 06:25:20 +10:00
rswier
c35b1e2add Replace badd/uind with vector 
vector instruction now used for array referencing.  I had overlooked it.
Also, minor cleanup.
 2016-03-18 01:33:47 -04:00
Warren Toomey
fbbe0c6729 Added command line options to enable . and .. 2016-03-17 09:08:37 +10:00
rswier
b3b868ed50 Ported B compiler b.c to b.b. 
Ported B compiler b.c to b.b.  It is able to compile itself.  Hints are
in the comment block.
 2016-03-16 01:46:35 -04:00
Warren Toomey
320dd0418f Add missing dput to .rename 2016-03-16 11:24:56 +10:00
Warren Toomey
00c2de0292 I bit the bullet and implemented "." in the filesystem. I've changed the proto 
file to put the binaries in system. I added a few more checks to fsck, and I fixed
a few bugs in src/other/wktls.s.
 2016-03-16 05:36:22 +10:00
Warren Toomey
56f6da9cd8 New tool fsck7 2016-03-15 15:49:40 +10:00
Warren Toomey
624776e0f3 Argh. A real dumb bug in mkfs7 that stopped us getting a shell. Fixed. 2016-03-14 21:22:29 +10:00
Warren Toomey
9da0484a39 I've got init past the link, but it then dies on the open("sh") immediately 
after that. Yes, dd has to be i-num 4. I've modified mkfs7 and the proto
file to allow this to occur. I've also make link counts negative.
 2016-03-14 19:49:37 +10:00
Warren Toomey
3629461a20 Merge branch 'master' of https://github.com/DoctorWkt/pdp7-unix 2016-03-13 21:09:33 +10:00
Warren Toomey
8b421eb27b I've commited a change to as7 to use the C pre-processor. Not sure if it's 
to everybody's taste.
 2016-03-13 21:08:43 +10:00
rswier
a7b4608711 B compiler update 
More progress
 2016-03-13 03:41:14 -04:00
Warren Toomey
1829f8577f Added graphviz output to xref7 so that we can see the call graph. 2016-03-13 07:27:29 +10:00
Warren Toomey
abf5ae6149 Also print out the routine's filename in xref7. 2016-03-12 22:53:33 +10:00
Warren Toomey
ffb6676a39 I wrote a very simplistic tool to generate kernel cross references. 2016-03-12 22:37:37 +10:00
Warren Toomey
f3dad7916b Clean up comments. 2016-03-11 22:31:40 +10:00
Warren Toomey
e7d04b5dee Added Readme comment 2016-03-11 22:27:06 +10:00
Warren Toomey
fed0d959b7 Replace numeric literal with constant. 2016-03-11 22:18:04 +10:00
Warren Toomey
e5457d15fb I've added code to mkfs7 to build a free block list, to write it out to 
the disk image, and to add a pointer in block zero to the beginning of
the list.
 2016-03-11 22:00:25 +10:00
Warren Toomey
bfeb833141 Added sdump tool, added a coldboot option to build/Makefile, added a few 
kernel comments.
 2016-03-11 16:00:10 +10:00
rswier
c62890ab56 B compiler development 
More stuff working.
 2016-03-11 00:29:01 -05:00
Warren Toomey
97f29f046c Moved proto and password to build/ 2016-03-11 10:30:05 +10:00
Phil Budne
758a8952ea mkfs7: update directory inode i.size when appending a dnode 2016-03-10 18:39:31 -05:00
Warren Toomey
becb1f4996 So, SimH stores things big-endian. Fixed mkfs7. 2016-03-11 07:04:53 +10:00
Warren Toomey
8d487fee5c Off by 1 errors in mkfs7, now fixed. 2016-03-11 06:57:46 +10:00
Warren Toomey
86135be03e More mkfs changes as Phil tries to get the kernel up to reading init. 2016-03-10 16:48:12 +10:00
Warren Toomey
7daa5f7a64 Get mkfs7 to write 8000 empty blocks to fill the bottom half before the 
real filesystem in the top half.
 2016-03-10 16:36:45 +10:00
Warren Toomey
436929b83c Changed the filesystem proto file and enhanced the mkfs7 tool based on 
Phi's analysis of the filesystem.
 2016-03-10 16:04:35 +10:00
Phil Budne
d7d7d592d7 fix "rim" format 2016-03-10 00:11:20 -05:00
Warren Toomey
089c8b806f I made a change to the word2ascii routine and replicated it out to other programs. 2016-03-10 14:14:57 +10:00
Warren Toomey
f468628159 Fixed a small i-node calculation bug, and added more debug messages. 2016-03-10 14:11:22 +10:00
Warren Toomey
e784132ba4 Added better debugging output, fix a bug converting ASCII to words. 2016-03-10 13:28:02 +10:00
Warren Toomey
4b90522231 Fix list output logic. 2016-03-10 12:56:51 +10:00
Warren Toomey
3ef14fa6f6 Oops, I forgot to actually write the file contents into the filesystem image. 2016-03-10 12:54:46 +10:00
Warren Toomey
d1b995e771 I've written more of mkfs7 but not tested it yet. 2016-03-10 12:46:00 +10:00
Tom Everett
587d0a3733 added a readme for the tools 2016-03-09 18:05:08 -07:00
Warren Toomey
6ecf5da1a3 Updated README.md 2016-03-10 10:22:40 +10:00
Warren Toomey
2880d1b2e4 I've made a start on a mkfs tool for PDP-7 Unix. So far I have the routines 
to build the filesystem, but they are not tested. I need to add code to
parse the "proto" file, whose syntax is based on the 6th Edition proto file.
I also need to dump out the filesystem image.
 2016-03-10 09:53:05 +10:00
Warren Toomey
0517b7c2fc Merge branch 'master' of https://github.com/DoctorWkt/pdp7-unix 2016-03-10 07:44:54 +10:00
Warren Toomey
b03cc44290 Fixed up the llss instruction in a7out. 2016-03-10 07:44:31 +10:00
rswier
f36928ff9f B compiler 
Very preliminary B compiler.  Only able to compile hello.b and not
tested further.  This is implemented in a subset of C that will
hopefully ease porting itself to B.
 2016-03-09 04:29:52 -05:00
Phil Budne
9c8cc278a4 fix smes comment block (copied from pbsh.s) 2016-03-07 17:58:09 -05:00
Phil Budne
5f735f6ba4 3dump: handle 0200 bit set on all "frames" 2016-03-07 17:29:23 -05:00
Phil Budne
38ff8aec09 a7out: changes for shell 
handle "ptr" format executable files
tty read always returns only one character
add shell-compatible "smes" behavior
 2016-03-07 17:27:31 -05:00
Warren Toomey
2d9157f4e6 Merge branch 'master' of https://github.com/DoctorWkt/pdp7-unix 2016-03-08 06:48:27 +10:00
Warren Toomey
77ba9809e7 Fixed a small tty handling bug. 2016-03-08 06:48:06 +10:00