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59 Commits

Author SHA1 Message Date
Warren Toomey
f6f05e6483 A few lines got lost in the last edit to s6.s, now fixed. 2016-04-28 15:04:29 +10:00
Phil Budne
1a4c0c3c71 s6.s: add comments 2016-04-17 13:26:12 -04:00
Phil Budne
c8129d7fa4 s4.s: comment disk block free and (self modifiying) char queue routines 2016-04-17 13:26:12 -04:00
Phil Budne
cb187e12be update queue (and other) storage comments 2016-04-17 13:26:11 -04:00
Phil Budne
032dc37705 sys: alloc comments 2016-04-17 13:26:11 -04:00
Phil Budne
208ed1dbf5 sys comments 2016-03-31 22:53:27 -04:00
Phil Budne
615bdba101 s4.s: more comments 2016-03-29 22:18:47 -04:00
Phil Budne
687bbb06cf fix buffer cache search 2016-03-29 21:20:37 -04:00
Phil Budne
77d49f4328 s3.s: fix a comment typo 2016-03-29 11:05:03 -04:00
Phil Budne
fa74947215 sys: comments for seek & tell 2016-03-28 01:02:54 -04:00
Phil Budne
9b675f2c52 fix comment paste-o 2016-03-27 01:26:30 -04:00
Phil Budne
72bbd8d4e6 s8.s: adjust "init" literal to be acceptable to native "as" 2016-03-25 01:02:38 -04:00
Phil Budne
989bd7039e coped maksys.s from scans; fixed assembly errors 2016-03-24 01:03:44 -04:00
Warren Toomey
ce0a5401a9 Add trysys.s to src/sys. 2016-03-24 06:20:38 +10:00
Phil Budne
ac6e7470cf disk buffer comments (and comments about a mystery) 2016-03-22 21:29:46 -04:00
Phil Budne
164125be7e sys comments 2016-03-21 11:00:19 -04:00
Warren Toomey
94fd5d49e0 I've restructured the alternative version of PDP-7 Unix so that the 
source code is now in src/alt. All the files in src/sys and src/cmd
are only annotated versions of the files in scans/.
The build/Makefile has been updated so that it can build the
original PDP-7 Unix or the alternative version.
Phil has fixed the Graphics-2 code, so that there is no need to
have any #ifdef code in the original kernel.
 2016-03-21 16:01:36 +10:00
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
Phil Budne
053aedcf95 s7.s: fix sna/sma confusion that caused hangs in display PI code 2016-03-19 00:51:07 -04:00
Warren Toomey
64a118cb4a More kernel notes. 2016-03-19 11:05:37 +10:00
Warren Toomey
9483300758 sys status returns 13 words, the last one holds the i-number. 2016-03-18 19:47:05 +10:00
Phil Budne
89356e9aea sys (display) comments 2016-03-17 00:08:28 -04:00
Phil Budne
f91b929d90 fix/add sys comments 2016-03-17 00:08:28 -04:00
Warren Toomey
320dd0418f Add missing dput to .rename 2016-03-16 11:24:56 +10:00
Phil Budne
fe48c8cdc8 system comments 2016-03-15 20:48:42 -04:00
Phil Budne
b94ca04259 sop.s: add comment for "cdf" IOT 2016-03-15 06:53:15 -04:00
Phil Budne
ab76e46005 sys: add comments 2016-03-15 06:53:04 -04:00
Warren Toomey
4073baba05 Fix transcription error in s2.s link. 2016-03-14 20:19:48 +10:00
Warren Toomey
cd7befb2de More kernel comments: link. 2016-03-14 18:26:36 +10:00
Warren Toomey
cfa57f16b3 More kernel comments: partial comments for namei. 2016-03-14 17:50:13 +10:00
Warren Toomey
6ffdf4076d More kernel comments: iget 2016-03-14 17:40:46 +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
Phil Budne
8c20d30cd1 sop: add missing "spa" (not used in kernel!) 2016-03-13 00:05:57 -05:00
Phil Budne
a929bc08b7 fix OMQ definition 2016-03-13 00:05:57 -05:00
Warren Toomey
4860c0a8b0 I've commented out some of the code in s7.s to try and disable the 
Graphics-2 I/O operations.
 2016-03-13 14:36:33 +10:00
Warren Toomey
ba3b33d7da There seems to be a transcription error in s7.s, I fixed by eyeballing 
the scans.
 2016-03-13 13:21:25 +10:00
Phil Budne
adc6fdcc50 sys NOTES.md: update i.nlnks comment 2016-03-11 16:33:53 -05:00
Phil Budne
9372fa5f56 sys: more comments 2016-03-11 16:32:11 -05:00
Phil Budne
802ab257b9 sys: kernel comments 2016-03-11 16:01:01 -05:00
Phil Budne
df1d8e29dd update sys NOTES 2016-03-11 11:23:59 -05:00
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
Phil Budne
2ff3a45a64 sys: fix "mul" in sop.s 2016-03-10 17:54:21 -05:00
Warren Toomey
b03cc44290 Fixed up the llss instruction in a7out. 2016-03-10 07:44:31 +10:00
Phil Budne
cf47a841b2 more markdown 2016-03-08 12:14:05 -05:00
Phil Budne
858fe3dd13 notes on kernel & disk format 2016-03-08 12:10:31 -05:00
Phil Budne
03d5e49ae9 sys comments for rmes/smes calls, process table (user list) words 
noticed "exit" call falls into "rmes" call!!!
 2016-03-08 11:51:03 -05:00
Phil Budne
a80e2afda7 update comments for "passone" (return one character from special device) 2016-03-07 17:22:33 -05:00
Phil Budne
1033fa24bf update comment for TTY inter char (ALT MODE key?) 2016-03-07 17:22:32 -05:00
Phil Budne
efb0553d7f system comments 2016-03-03 21:14:35 -05:00
Phil Budne
864c896a8c system comments 2016-03-03 13:42:03 -05:00