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C00001 00001
C00002 00002	Introduction
C00003 00003	February, 1975
C00008 00004	March, 1975
C00011 00005	April, 1975
C00012 00006	June 1975
C00015 ENDMK
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Introduction

This is a record of changes to SAIL system.  An entry to this file
should be made whenever any changes are made to the system SAIL files
(SAIL.DMP, SAISGx.SEG, LIBSAx.REL, etc.) or after any modifications
to the SAIL source files (e.g., at the end of an editing session)
Reference should be made to the files BUGS & FEATS, as appropriate. 

			Russ Taylor
February, 1975

#TX#	fixed sources & patched sys:sail.dmp & saildd[s,ail].
	2-7-75 RHT

%##%	Recompiled @IT & put the result on system.  Left SAIL.OLD
	alone.  2-8-75 RHT

#TY#	fixed bug in source (LEPRUN) reported by LDE.  Made no
	changes to system files.  Bug may cause strngc lossages
	in programs involving string refitems.  If this happens,
	look here. 2-10-75 RHT

#TZ#	Typo in gen.  patched source & .dmp files
	2-12-75 RHT

%CA%	Added new routine CVASTR to STRSER sources.  Did not
	test, assemble, or update incremental manual
	2-12-75 RHT

%##%	Changed "=-" to a "-=" in TRIGS.  This was necessitated by
	a change in FAIL. Reassembled runtimes & put up new saisg8 &
	libsa8 on system.
	2-12-75 RHT

#UA#	Fixed a string gc bug in GOGOL.  Made a TENEX-only change
	to SAIL and CC[10x,ail] by putting a variable in the
	switched area that had been left outside in error.
	2-15-75  RLS

	Why is there a file HEAD.FAI on [S,AIL] in addition to HEAD?
	Do changes to HEAD have to be made to HEAD.FAI in addition?
	I changed a TENEX switch setting in HEAD, and then had
	to do the same to HEAD.FAI (which RPG favors over HEAD).
	2-16-75 RLS

	Above comment by RLS indicates a bug in SCISS, which is supposed
	to delete the file HEAD.FAI on the second pass. JFR

%##%	Edits to HEAD/7,17  SAIL/24  TOTAL/35  GEN/48  GEN/32,33
	to clear up BAIL recursive procedure type bits problem
	and define request protocol and residence of procedure
	descriptors for SAIL runtime routines and first pass at
	records and references.  New SAILDD. JFR 2-16-75

	Above changes also made to SYS:SAIL. JFR 2-17-75

%##%	Edits to TRIGS to take out the code JAM inserted therein without
	telling anyone.  Sent network mail to RICART%NCCT telling
	him what to do.  RHT 2-19-75

#UB#	An OLD and terrible bug (one of the "how did it ever work?" 
	variety in boolean code.  Made the appropriate patches in
	source & .dmp files RHT 2-21-75

%==%	Recd word from CMU that they have snarfed a copy of SAIL files
	& put up a system with no problems.  Send LDE a note thanking
	him for his nice compliments & warning him about #ub#.
	RHT 2-22-75

#%%#	One-word patch in BAIL code at BFORMS+24 [GEN/32], try to
	help recursive procedures and lexical nesting code. JFR 2-23-75

%##%	Snarfed copy of STATS from S,AIL to S,RHT & began making some
	changes for the sake of new-style records.  May be a bit bigger job
	than I thought, especially if Recuuo is to be flushed & string
	subfields are to be added.  Will continue working on in in odd moments.
	RHT

#UC#	(CMU =E3=) two bugs in refitem deletion.  Patched LEPRUN & made new
	segment and SAILEP entry for LIBSA8.  RHT 2-26-75

March, 1975

%##%	TENEX-specific changes made to the following files:
		(1)  ioser.tnx:  enter and lookup different error
	handling for device tty.
				gtjfn and openf:  defaults
	removed from code and documentation
				ttyin and friends:  patch
	made for new breaktable stuff, not quite right after JFR's
	fixes.
		(2)  An old and bad bug:  the compiler scanner
	decides that the buffer is done when it encounters a zero word.
	This has been fixed in the TENEX version.  It probably should
	be fixed in the DEC version too, but it slows it down slightly.
	ADVBUF in SYM (TENEX only) now checks that there is really nothing
	more in the buffer.  Changes to SYM, SAIL (new switched variable added),
	and CC[10x,ail] (variable cleared when files switched.)
		(3)  FOO2:  CHFDB added, for TENEX only.
	Total changes to:  SAIL, SYM, CC, IOSER.TNX, FOO2.  
	RLS 3-1-75

#UD#	Added CVASTR to FOO2.  Did not recompile yet.
	RHT 3-1-75

#%%#	Modified GEN so that all toplev non-external record pointers are
	declared OWN.
	RHT 3-9-75

#%%#	Fixed SPARES for NRC stuff
	RHT 3-16-75

%##%	Made up files for NRC stuff.  SAILDD.NEW, SAIL.DMP, SAILOW, SAISG8,
	HLBSA8, and LIBSA8 all exist on [s,ail].  Also, STATS.OLD & RECSER.OLD.
	Included HACK to detect old style record calls.  Will put
	up on system next weekend.
	RHT,JFR 3-30-75

%##%	PROFIL.SAI[X,AIL] replaced, old version PROFIL.OLD.  Added TENXSW,
	allowed ! to be equivalent to _ (so that START!CODE is START_CODE)
	FOO2:  TENEX-only functions SETCHAN and SETEDIT added.
	Old version is TRIGS.OLD.
	TRIGS:  TENEX-only interrupt code for under/over flow finally
	merged into sources.  Old version is TRIGS.OLD.  
	DO DOLIB on [10x,ail] to make "library".
	Total changes to master files:  FOO2, TRIGS, PROFIL.SAI.
	RLS  3-31-75
April, 1975

%##%	Put up new record system
	RHT 4-4-75

#UG#	Fixed bug.  patched source, sail.dmp[1,3], saildd.dmp[s,ail]
	RHT 4-7-75

%##%	Reassembled segment & sairec at behest of PDQ.
	JFR claims string subfields now work in compiler.  Will put
	up new compiler when Quam gets string garbage collector working.
	RHT 4-8-75

#UH#	Bug in TRIGS.  Reassembled HLBSA8 & LIBSA8 entries & put up.
	RHT 4-14-75

#UI#	Bug in INCHWL.  Reassembled saisg8 & SAITTY entries & put up
	RHT 4-14-75

#UJ#	Bug in FOO2.  Patched saildd & sys:sail.  Fixed FOO2.
	RHT 4-21-75
June 1975

	New compiler; supports full implementation of new record system,
	including string subfields.
	New CREF listing of compiler, SYSUDP:SAIL.LST[S,AIL] and
	a version that has been ETV'ed, SYSUDP:SAIL.ETV[S,AIL].
	6-1-75	JFR

	Edited GEN/30 to fix bug UK:  string procedure is not a string.
	6-2-75 RS

	Transfered RTRAN.SAI, RTRAN.DMP, FOO2, BPDAHD.FAI, BSM1HD.FAI
	from [1,JFR] to [S,AIL], first making RTRAN.OLD, FOO2.OLD.
	These are the files necessary for making the predeclared runtimes
	known to BAIL.  A SRCCOM of RESTAB (after going through
	the new RTRAN and the old RTRAN) showed no differences.
	Added BPDAHD.FAI, BSM1HD.FAI to FILES[X,AIL].
	JFR 6-3-75

	New version of PROFIL, accepts lowercase switches. JFR 6-4-75

%CD%	Tried putting up PDQ's new record stuff.  First time was a bomb,
	had to change 21 HERE's to HEREFK's.  Second time also a bomb.
	Rolled back to previous version, trying to figure out what's going on.
	
%CD%	At least part of the problem was that LOWER.REL was still around
	from the first try.  Deleted everything and started over, third
	time still got burned.  Won't try again until PDQ and RHT
	figure out what is going on.
	JFR 6-7-75

	Spooled compiler listing made 6-1-75.  Updated SYS UDP with files
	on [S,AIL] that had changed since last saved on UDP.
	JFR 6-7-75

%CD%	Found the problem.  Only one of the HEREs needed to be made a HEREFK.
	PDQ should have told me.  Tried assembling SAISPC and SAIREC for 
	LIBSA8, got UNDEF SGINS in SAISPC.  Just left SAILOW.REL, SAISG8.SEG
	and other stuff on [S,AIL] because system was too loaded to
	get anything done and there won't be anyone around for 4 or 5 days
	after I leave for CMU, in case disaster should strike.
	JFR 6-9-75.