--- MiNT/src/changes	2018/04/24 17:55:56	1.1.1.2
+++ MiNT/src/changes	2018/04/24 17:58:12	1.1.1.4
@@ -4,6 +4,1260 @@ first.
 
 
 
+version 1.10
+
+
+
+procfs.c: ++nox@jelal.north.de
+
+	New Fcntl() command (PFSTAT) for finding
+
+	control terminals of processes.
+
+dosfile.c: ++bjarne@goedel.uni-muenster.de
+
+	Make f_open and f_create reentrant.
+
+main.c: ++hyc@hanauma.jpl.nasa.gov
+
+	Better Falcon Bconmap() fix.
+
+dos.c: ++hyc@hanauma.jpl.nasa.gov
+
+	NEW SYSTEM CALL: Tmalarm() for millisecond resolution
+
+	alarms.
+
+biosfs.c: ++nox@jelal.north.de
+
+	Fixed ioctl(,,TCSETBAUD) when oldbaud == newbaud.
+
+dosdir.c,unifs.c: ++schwab@ls5.informatik.uni-dortmund.de
+
+	Extended Dfree() to work properly on arbitrary drives,
+
+	not just ones that are root directories or aliased
+
+	(this arises e.g. for Dfree() on U:, when the current directory
+
+	isn't a root).
+
+syscall.spp,inline.h: ++schwab@ls5.informatik.uni-dortmund.de
+
+	Bugfix for TOS 1.4: the BIOS expects register A5 to
+
+	contain a 0 when it is called.
+
+bios.c: ++schwab@ls5.informatik.uni-dortmund.de
+
+	Make reads on console interrupt driven.
+
+procfs.c,shmfs.c:
+
+	Fixed Fseek(offset,f,2) to properly add "offset" to the
+
+	end of file position, rather than subtracting it.
+
+proc.c,signal.c: ++roemer@informatik.uni-frankfurt.de
+
+	Made sleep return a value specifying whether or not the
+
+	sleeping process was interrupted by any signals.
+
+file.h,biosfs.c,fasttext.c: ++itschere@TechFak.Uni-Bielefeld.DE
+
+	Added XATTR structure to bios files, to allow them to have
+
+	ownership, access modes, and time stamps. Restricted
+
+	Dcntl on u:\dev to superuser processes.
+
+biosfs.c, pipefs.c, file.h: ++entropy@terminator.rs.itd.umich.edu
+
+	Fix TIOCFLUSH on biosfs.
+
+	Give meaning to TIOCFLUSH's argument:  it is now a pointer
+
+		to a longword mask specifying the type of flush:
+
+		*arg & 1 -> flush input only
+
+		*arg & 2 -> flush output only
+
+		*arg == 0 -> flush input and output
+
+		arg == NULL -> flush input and output (backwards compatibility)
+
+	Add TIOCOUTQ to biosfs and pipefs.  The argument is a pointer
+
+		to a longword to be filled with the number of bytes in the
+
+		output buffer.
+
+*fs.c,file.h:
+
+	Added an "rdev" field to the XATTR structure, so that programs
+
+	can find the BIOS device number for character devices.
+
+biosfs.c: ++schwab@ls5.informatik.uni-dortmund.de
+
+	Added a /dev/fd subdirectory.
+
+biosfs.c: ++schwab@ls5.informatik.uni-dortmund.de
+
+	Restrict some operations to privileged users.
+
+filesys.c: ++itschere@TechFak.Uni-Bielefeld.de
+
+	Create new device filenames in lower case, for consistency.
+
+dosdir.c,tosfs.c: ++itschere@TechFak.Uni-Bielefeld.de
+
+	Improved security for Fdelete, Dsetpath, and some other
+
+	calls; made TOS file systems accessible only to root and
+
+	the admin group.
+
+bios.c,syscall.spp,main.c,proc.h:
+
+	Added a flag (in_dos) to the PROC structure; the BIOS can use
+
+	this for security checking on Rwabs and similar calls.
+
+procfs.c: ++micro@imada.ou.dk
+
+	Bug fix: memory protection modes weren't being properly reset
+
+	after memory was read from/written to.
+
+mem.c: ++bernd.kischnik@cdc2.ifum.maschinebau.uni-hannover.d400.de
+
+	Fixed a bug with memory initialization when the screen is
+
+	at a fixed location (i.e. with 3rd party graphics cards).
+
+context.spp: ++alex@falcon.demon.co.uk
+
+	Only check for 64 bytes of supervisor stack, rather than 1K; also,
+
+	corrected some loop counters.
+
+tty.c: ++nox@jelal.north.de
+
+	Hack so that ^S/^Q work on BIOS devices other than the keyboard.
+
+intr.spp: ++nox@jelal.north.de
+
+	Check for auto-repeating keys so that Fselect() wakes up more
+
+	quickly.
+
+bios.c: ++nox@jelal.north.de
+
+	Made BIOS devices take less CPU time while waiting for characters.
+
+filesys.c:
+
+	If a search for a path component (other than the last one)
+
+	fails, always return EPTHNF (like GEMDOS does).
+
+pipefs.c:
+
+	When freeing a closed fifo, free any associated tty as well.
+
+main.c: ++schwab@ls5.informatik.uni-dortmund.de
+
+	New command for mint.cnf: "include".
+
+mem.c:
+
+	In create_base(), limited the amount of memory assigned to
+
+	a new basepage if the current process has a limit assigned
+
+	by Psetlimit().
+
+biosfs.c:
+
+	Fixed the DEV_NEWBIOS call (it wasn't linking the newly created
+
+	device into the bios file system chain).
+
+dosdir.c:
+
+	Based on a suggestion by Uwe Seimet: made Dlock() return
+
+	ELOCKED when called twice by the same process, so that under
+
+	single tasking AES accessories may use it.
+
+unifs.c:
+
+	Fixed a bug in FS_UNMOUNT (fc->index is not necessarily
+
+	a pointer to a UNIFILE, since the file system may use
+
+	that for its own purposes).
+
+debug.c: ++nox@jelal.north.de
+
+	Make only ctrl-alt-key characters significant to the
+
+	debug code (before, any character could start/stop output).
+
+memprot.c,mem.c,dosmem.c: ++schwab@ls5.informatik.uni-dortmund.de
+
+	Andreas did a major clean-up of the memory protection code.
+
+	It's now faster, and quite a few bugs have been fixed.
+
+mem.c: ++schwab@ls5.informatik.uni-dortmund.de
+
+	Made sure that only even addresses are passed to zero() (I guess
+
+	some linkers don't make sure that text, data, and bss are all
+
+	even lengths?)
+
+util.c: ++schwab@ls5.informatik.uni-dortmund.de
+
+	In kmalloc(), the size passed to nalloc_add_arena() was wrong.
+
+main.c,debug.c,mem.c: ++schwab@ls5.informatik.uni-dortmund.de
+
+	Restore the screen to its original address when exiting MiNT.
+
+fasttext.c: ++nox@jelal.north.de
+
+	Allowed the fasttext device to be opened more than once.
+
+nalloc2.c: ++nox@jelal.north.de
+
+	Fixed the code for figuring out when to free an arena (it didn't
+
+	use to take account of the arena size itself).
+
+proc.c: ++Martin_Koehling@un.maus.ruhr.de
+
+	Allocate all memory before doing file duplication, so that
+
+	if a fork() runs out of memory we don't leave cookies
+
+	hanging.
+
+main.c: ++brad@tazboy.jpl.nasa.gov
+
+	Allow quotes to delimit arguments in the MINT.CNF file.
+
+xbios.c:
+
+	Installed a work-around in dosound() for Pure C's problem
+
+	with "volatile".
+
+filesys.c:
+
+	Put in a temporary kludge so that .XFSes that don't install
+
+	BIOS vectors can work (for a while). Note that .XFSes should
+
+	either install BIOS vectors, or should mount themselves on
+
+	drive U: without taking up a drive letter. THIS KLUDGE WILL
+
+	GO AWAY SOMEDAY SOON!!!
+
+syscall.spp: ++schwab@ls5.informatik.uni-dortmund.de
+
+	Various optimizations.
+
+
+
+version 1.09
+
+
+
+biosfs.c:
+
+	Implement file locking for BIOS devices.
+
+dosmem.c:
+
+	Fix the Pexec(200,...) bug (trying to save the command line
+
+	image must be done *before* the existing program's memory
+
+	is freed).
+
+nalloc2.c,util.c:
+
+	Allow kmalloc()'d memory to be returned to the OS, if possible.
+
+xbios.c:
+
+	Dosound() can be called with a negative number as its parameter,
+
+	in which case it is only an inquiry function.
+
+
+
+version 1.08
+
+
+
+dosfile.c,dosdir.c,filesys.c:
+
+	Made the file and directory operations re-entrant, by replacing
+
+	the global variable "temp1" with local variables (where needed).
+
+dosdir.c,filesys.c: ++schwab@ls5.informatik.uni-dortmund.de
+
+	Cleaned up the directory closing functions.
+
+dosmem.c: ++schwab@ls5.informatik.uni-dortmund.de
+
+	Fixed a bug in do_vfork (the child's PROC structure could be
+
+	freed when signals are checked for, and the old code wasn't
+
+	prepared for that).
+
+purec\*.*: ++reschke@math.uni-muenster.de
+
+	Updated for the new version of MiNT.
+
+*.*: ++alex@falcon.demon.co.uk
+
+	Lots of fixes to get rid of warnings and some small optimizations.
+
+dosmem.c,procfs.c: ++reschke@math.uni-muenster.de
+
+	In Pexec, save the name and arguments a process was started with
+
+	into the PROC structure, so that they can be recovered at run time.
+
+filesys.c,main.c,unifs.c: ++Ulrich Kuehn
+
+	At boot time, load files called *.xdd which contain external
+
+	device drivers.
+
+	Also, provide Dcntl calls for drive U: to allow installing and
+
+	de-installing file systems at run time.
+
+bios.c: ++nox@jelal.north.de
+
+	Only busy-wait for the parallel port, not for serial ports.
+
+unifs.c: ++schwab@ls5.informatik.uni-dortmund.de
+
+	Pass Dcntl commands along to file systems.
+
+signal.c: ++schwab@ls5.informatik.uni-dortmund.de
+
+	Make Fselect interruptable.
+
+procfs.c: ++schwab@ls5.informatik.uni-dortmund.de
+
+	Check for illegal signal numbers in ioctl(PTRACEGO,...).
+
+dosdir.c:
+
+	Fattrib should have been following links.
+
+*.spp: ++Claus Brod and Uwe Seimet
+
+	Various optimizations
+
+
+
+version 1.07
+
+
+
+debug.c: ++reschke@math.uni-muenster.de
+
+	Translated the German "FATAL ERROR" message.
+
+intr.spp:
+
+	The bus error handler shouldn't use 68030 MMU instructions unless
+
+	it is on a 68030. (Thanks to Stephen Henson for catching this.)
+
+
+
+version 1.06
+
+
+
+bios.c: ++akiernan@cix.compulink.co.uk
+
+	Fixed a bug with Bconout and TOS 1.02.
+
+dosmem.c:
+
+	Bug fix: Pexec mode 4 should cause the child to inherit its parent's
+
+	memory.
+
+filesys.c:
+
+	if disk_changed() detects an invalid drive, return EDRIVE from
+
+	it and also from path2cookie().
+
+main.c:
+
+	Fixed the PRN= line in mint.cnf (it was redirecting AUX:, not
+
+	PRN:).
+
+xbios.c:
+
+	Made Dosound() automatically grant supervisor access to the
+
+	region the sound is in.
+
+debug.c:
+
+	Make the "FATAL ERROR" message multilingual, and also less
+
+	confusing if debugging information is not provided.
+
+timeout.c,main.c:
+
+	Make the addtimeout() and canceltimeout() functions available
+
+	for device drivers.
+
+signal.c: ++schwab@ls5.informatik.uni-dortmund.de
+
+	Reduce the amount of space needed for signal calls (we were
+
+	being overly cautious on that),
+
+dosmem.c: ++akiernan@falcon.demon.co.uk
+
+	Make sure that the text segment in which a process will be
+
+	executing is attached to that process when it is started with
+
+	a Pexec (4,...).
+
+asmtrans: ++robert.wilhelm@physik.tu-muenchen.de
+
+	Enhanced to accept some 68030 specific addressing modes.
+
+proc.c:
+
+	Removed the save/restore of the logical screen pointer for the
+
+	MultiTOS kernel (this causes problems on a Falcon, since if the
+
+	AES changes resolution its parent process may be left with a
+
+	logical screen pointer pointing at invalid memory). 
+
+bios.c: ++robert.wilhelm@physik.tu-muenchen.de
+
+	Some small optimizations.
+
+biosfs.c:
+
+	Fcntl() was not interacting properly with rsconf(), so that
+
+	setting baud rates via Fcntl didn't work.
+
+dosfile.c:
+
+	Fforce() should return 0 on success.
+
+context.spp,cpu.spp: ++julian@math.uni-muenster.de
+
+	Patches for PureC.
+
+intr.spp: ++Robert.Wilhelm@Physik.TU-Muenchen.DE
+
+	Small optimization: no return value is needed for spl().
+
+
+
+version 1.05
+
+
+
+main.c: ++hyc@hanuama.jpl.nasa.gov
+
+	A better Falcon BIOS fix: if we're on a broken Falcon, turn
+
+	off Bconmap completely.
+
+various places: ++hohmuth@freia.inf.tu-dresden.de
+
+	Applied Michael's patch to make MiNT compile with PureC and
+
+	the MiNT library.
+
+memprot.c: ++schwab@lamothe.informatik.uni-dortmund.de
+
+	Fixed a bug in prot_temp (the cookie values weren't being
+
+	parsed out correctly). Also, added "const" where appropriate.
+
+dosfile.c: ++schwab@lamothe.informatik.uni-dortmund.de
+
+	Fixed some places where the fdflags[] for file handles
+
+	wasn't be set up correctly (default is 0 for std handles,
+
+	FD_CLOEXEC for non-std).
+
+cpu.spp,main.c: ++schwab@lamothe.informatik.uni-dortmund.de
+
+	Saved the MMU context when starting MiNT, so that we can
+
+	restore it again afterwards (and thus exit MiNT gracefully).
+
+main.c: ++julian@math.uni-muenster.de
+
+	Supplied a PMMU cookie if memory protection is on; if a PMMU
+
+	cookie already exists, don't do memory protection.
+
+fasttext.c: ++nox@jelal.north.de
+
+	Added ESC-t support to the fasttext device.
+
+bios.c: ++nox@jelal.north.de
+
+	Some modem port TSRs also don't return the correct value from
+
+	Bconout.
+
+dos.c:
+
+	Made Tsettime() and Tsetdate() available only to the super user.
+
+various places: ++akiernan@cix.compulink.co.uk,++julian@math.uni-muenster.de
+
+	Portability fixes to make the code compile with PureC and
+
+	Lattice C; also, Alex fixed up the cache clearing code.
+
+tosfs.c: ++schwab@lamothe.informatik.uni-dortmund.de
+
+	Fixed a bug in the NEWWAY code (during disk change, don't
+
+	free file cookies that may be in use).
+
+context.spp: ++seimet@rhrk.uni-kl.de
+
+	In the restore context code, touch the page containing the
+
+	(new) supervisor stack pointer before switching stack pointers.
+
+	Otherwise, if the page is not resident (a 3rd party virtual
+
+	memory system has swapped it out) then the resulting
+
+	bus error is fatal.
+
+tosfs.c: ++akiernan@cix.compulink.co.uk
+
+	Fixed a bug that could cause crashes on disk changes (the
+
+	'open' field was an integer for directories).
+
+rendez.c, mem.c: ++Martin_Koehling@un.maus.de
+
+	Fixed some memory leaks (semaphores weren't freed after being
+
+	destroyed, and if load_and_reloc failed then the memory
+
+	allocated for the shared text region wasn't freed).
+
+procfs.c:
+
+	When tracing is cancelled for a process with PTRACESFLAGS,
+
+	start the process again by sending it SIGCONT.
+
+procfs.c: ++schwab@lamothe.informatik.uni-dortmund.de
+
+	Don't allow processes to be removed by a different user.
+
+signal.c:
+
+	Fixed the debug tracing code so that SIGCONT doesn't stop
+
+	a process, even if it is being traced.
+
+procfs.c:
+
+	Dpathconf was returning the wrong value (8 instead of 12 -- it
+
+	wasn't taking the pid number extension into account).
+
+
+
+version 1.04
+
+
+
+bios.c:
+
+	Changed the way timeout worked for Bconout() stuff (basically,
+
+	rewrote the code so that it really does work -- the old code
+
+	used the system clock in timeout.c, which doesn't get updated
+
+	if no context switches are happening; the new code uses the
+
+	200hz counter, which is always updated).
+
+proc.h:
+
+	Increased the number of Fsfirst searches that can happen
+
+	simultaneously to 10 from 6 (this is a per-process
+
+	limit, not system wide).
+
+
+
+version 1.03
+
+
+
+xbios.c: ++entropy@terminator.rs.itd.umich.edu
+
+	In old versions of TOS, Rsconf could get stuck waiting for the
+
+	transmit buffer to empty if flow control was on. Added a timeout.
+
+dos.c:
+
+	Changed Psetpgrp so that passing a pgrp of -1 makes it into
+
+	an inquiry call.
+
+filesys.c: ++Martin_Koehling@un.maus.de
+
+	Fixed a bug in Flock (regions were being locked 1 byte too far).
+
+mem.h:
+
+	Changed the memory allocation quantum to 256 bytes, so that
+
+	Srealloc will always work right on ST's.
+
+
+
+version 1.02
+
+
+
+main.c:
+
+	Run any AUTO folder programs appearing after MINTNP.PRG
+
+	as well as just plain MINT.PRG.
+
+syscall.spp:
+
+	Pop more stuff off the stack in sig_return, since we
+
+	did push more onto it in handle_sig. (It really shouldn't
+
+	matter, restore_context will restore the stack pointer
+
+	anyway, but better safe than sorry.)
+
+filesys.c,mem.c:
+
+	Made the open file associated with shared text memory
+
+	regions be closed automatically when a media change occurs.
+
+xbios.c:
+
+	Changed the do_usrcall function into an assembly language
+
+	routine which preserves all registers. Apparently some
+
+	programs rely on being able to pass parameters to Supexec
+
+	in registers. We only used to kill register A0, which was
+
+	reserved for BIOS use anyway, but obviously some programmers
+
+	choose not to read the f'ing manual.
+
+dosdir.c: ++entropy@terminator.rs.itd.umich.edu
+
+	Fixed a typo (PATH_MAX where ERANGE should have been).
+
+biosfs.c: ++schwab@lamothe.informatik.uni-dortmund.de
+
+	Check control keys on every newline, so users get quick response
+
+	to their key hits.
+
+tty.c: ++schwab@lamothe.informatik.uni-dortmund.de
+
+	Fixed a typo (t_startc is the character to use to resume terminal
+
+	output, not t_stopc!)
+
+dosdir.c,dosmem.c,filesys.c,tosfs.c: ++schwab@lamothe.informatik.uni-dortmund.de
+
+	Fixed many dup_cookie and release_cookie bugs; the code should be much
+
+	more usable now.
+
+main.c:
+
+	Corrected a flaw in the 68030 only version -- it assumed that
+
+	68030 was synonymous with memory protection. Also: set
+
+	mcpu correctly.
+
+main.c:
+
+	Checked to see if we're called "MINTNP.PRG"; if so, turn off
+
+	memory protection automatically. Commented out the code
+
+	for automatically turning MP off on 1 meg machines.
+
+
+
+version 1.01
+
+
+
+main.c,intr.spp:
+
+	Use init_tail for the temporary stack (saves us 128 bytes of bss,
+
+	oh boy).
+
+main.c:
+
+	If less than 1 megabyte is free, turn off memory protection
+
+	automatically.
+
+mem.h:
+
+	If there's no memory protection, do all ROUNDing etc. to
+
+	16 byte boundaries rather than 8K page boundaries.
+
+mem.c:
+
+	Added a check for the ability to move screen RAM; evidently
+
+	some boards use ST RAM but still don't allow Setscreen()
+
+	to work.
+
+all over the place: ++julian@math.uni-muenster.de
+
+	Cleaned up the code for PureC compatibility.
+
+all over the place: ++akiernan@cix.compulink.co.uk
+
+	Cleaned up the code for Lattice compatibility.
+
+fasttext.c: ++hyc@hanauma.jpl.nasa.gov
+
+	Sped up by special casing some of the gotoxy() calls, and
+
+	also allowed 8 pixel high characters in monochrome mode.
+
+dosdir.c: ++schwab@lamothe.informatik.uni-dortmund.de
+
+	Allow Frename() to succeed on symbolic links.
+
+signal.c: ++schwab@lamothe.informatik.uni-dortmund.de
+
+	Save processor context stuf in the reserved BIOS area even for
+
+	bus errors with memory protection on.
+
+dosfile.c: ++schwab@lamothe.informatik.uni-dortmund.de
+
+	Initialize the exception file descriptors to 0, in anticipation
+
+	of future use of this Fselect feature.
+
+dosfile.c: ++schwab@lamothe.informatik.uni-dortmund.de
+
+	Allow pipes to be opened and written to with O_APPEND mode.
+
+version.h:
+
+	Got rid of the PATCHLEVEL define. Now that I've finally
+
+	checked everything into RCS, it's much easier to just bump
+
+	up the version numbers on each release.
+
+
+
+version 1.00
+
+
+
+welcome.c,version.h:
+
+	Sigh. This is MultiTOS 1.0's MiNT, so even though I don't
+
+	consider it "finished", I'm changing the version number to
+
+	1.0. At least it's no worse than TOS 1.0 :-).
+
+memprot.c:
+
+	We want to flush the ATC cache, *not* the CPU cache. Thanks
+
+	for pointing this out, Alex.
+
+bios.c:
+
+	Fixed a problem with Speedo GDOS; if the printer's buffer was
+
+	full, Bconout(2,...) would do a context switch, which is not
+
+	a good thing for Speedo.
+
+
+
+version 0.99
+
+
+
+PATCHLEVEL 2::
+
+
+
+main.c:
+
+	Big bug fix -- the do_exec_os routine was being called with a
+
+	basepage that occupied all of memory, so that the Pexec(200) it
+
+	did was failing due to insufficient memory. Now we Mshrink the
+
+	basepage; this also necessitates fixing up the stack pointer.
+
+main.c:
+
+	Handle mint.cnf files that don't end in a carriage return/line feed
+
+	combination.
+
+filesys.c:
+
+	New path parsing code to correct a bug in the way symbolic
+
+	links were being handled on loadable file systems.
+
+
+
+PATCHLEVEL 1::
+
+
+
+debug.c:
+
+	Made the default debugging level give ALERT messages.
+
+dosfile.c:
+
+	Corrected a bug in the way global file handles are closed.
+
+
+
+PATCHLEVEL 0::
+
+
+
+dosmem.c:
+
+	Made it so that overlay Pexec modes (e.g. 200) set up
+
+	the basepage to preserve the same "parent".
+
+main.c:
+
+	Added in a kludge so that if we're starting GEM from a file
+
+	(e.g. gem.sys) then we do it via the exec_os vector. I hope
+
+	this makes the Codeheads happy :-).
+
+dosmem.c,tty.c:
+
+	Backed out entropy's and schwab's changes. Random programs
+
+	were getting stopped under MultiTOS because of them; I can't
+
+	find the cause, so let's go back to something that worked
+
+	(if suboptimally).
+
+main.c:
+
+	Fixed a silly initialization error: we should not
+
+	assume a default language, we should get it from
+
+	the ROMs.
+
+dosdir.c: ++julian@math.uni-muenster.de
+
+	Extended Dlock: if bit 1 of the mode is set, then the
+
+	process id of the process using the drive is returned
+
+	instead of ELOCKED or EACCDN; this allows for more
+
+	informative error messages.
+
+welcome.c:
+
+	Updated the copyright notice.
+
+
+
+version 0.98
+
+
+
+PATCHLEVEL 4::
+
+
+
+dosmem.c,tty.c: ++entropy@gnu.ai.mit.edu
+
+	Corrected some silliness in the job control code.
+
+
+
+PATCHLEVEL 3::
+
+
+
+xbios.c:
+
+	Took out the ONLY030 optimization; it didn't work correctly
+
+	(I can't see any reason why it shouldn't have worked, but
+
+	it didn't; perhaps a compiler bug bit us?)
+
+
+
+PATCHLEVEL 2::
+
+
+
+main.c:
+
+	Changed magic shift key to LEFT shift key.
+
+filesys.c:
+
+	Make loaded .XFS files go into supervisor accessible
+
+	memory.
+
+welcome.c,main.c:
+
+	Ask user in her own language whether or not to boot if the
+
+	kernel is a MultiTOS one and she held down the shift key.
+
+filesys.c:
+
+	Relax O_COMPAT mode opens somewhat so that any
+
+	number of processes can open the file for reading,
+
+	as long as no more than 1 has it open for writing.
+
+	ALSO: make sure O_EXEC gets treated the same as O_RDONLY.
+
+dosfile.c:
+
+	Change TRACE() to TRACELOW() on Fread and Fwrite.
+
+tosfs.c:
+
+	Went back to old method of doing tosfs.c; this is
+
+	better tested and safer.
+
+dos.c:
+
+	New system call, Salert(msg), for doing an alert message.
+
+debug.c:
+
+	Terminate messages written to the alert pipe with a 0.
+
+	Also: pour them into alert boxes so that programs like
+
+	sysalert don't have so much to do.
+
+
+
+PATCHLEVEL 1::
+
+
+
+fasttext.c: ++shenson
+
+	Corrected the quote_putch function.
+
+dosdir.c:
+
+	Allow Dfree(n) to work if "n" is a big number (e.g. BIOSDRV)
+
+	and the corresponding pseudo-drive is a current or root directory
+
+	of the current process.
+
+pipefs.c: ++schwab@ls5.informatik.uni-dortmund.de
+
+	Return a new error number, EPIPE, for writes to broken pipes.
+
+tty.c: ++schwab@ls5.informatik.uni-dortmund.de
+
+	If a tty loses its owner, the next process to do i/o to it
+
+	will become the owner.
+
+dosfile.c: ++schwab@ls5.informatik.uni-dortmund.de
+
+	FA_RDONLY doesn't mean "read only" on the process file system,
+
+	so allow such processes to be opened for writing.
+
+
+
+PATCHLEVEL 0::
+
+
+
+xbios.c:
+
+	Fixed Supexec to pass the function pointer on the stack, too
+
+	(just as TOS does). This is still undocumented behaviour,
+
+	so you rely on it at your own risk.
+
+xbios.c: ++entropy@gnu.ai.mit.edu
+
+	Applied a fix for Rsconf() with TOS 1.04, and made the
+
+	old TOS Rsconf stuff #ifndef ONLY030.
+
+proc.c,dosmem.c:
+
+	Wrap all calls to add_q/rm_q in spl7(), so that the
+
+	wakeselect() function truly can be called from
+
+	interrupt code.
+
+makefile,*.spp:
+
+	Make provisions for compiling an 030/040 only version
+
+	of MiNT; this should be faster and smaller than the
+
+	generic version.
+
+version.h:
+
+	The file system interface changes warrant a new version
+
+	number, so here it is.
+
+
+
+version 0.97
+
+
+
+PATCHLEVEL 3::
+
+
+
+dosdir.c,proc.c:
+
+	Keep a chain of open directories, so that if a program
+
+	terminates without calling closedir() we can still clean
+
+	up after it. Also: allocate directory structures from
+
+	kernel memory rather than user memory, so that we don't
+
+	take an 8K hit on each one. PROBLEM: a bug in the mntlib
+
+	readdir() function causes bus errors if memory protection
+
+	is on. This is a library bug that needs to be fixed
+
+	real soon now.
+
+dosmem.c:
+
+	TSRs now get forced into global memory if they were running
+
+	privately; this should make things easier for users who
+
+	forgot to change prgflags on their TSR programs.
+
+filesys.c:
+
+	New meaning for O_COMPAT mode: deny write access to all other
+
+	processes.
+
+tosfs.c:
+
+	Added a define to turn on/off the RO_FASCISM code. Personally,
+
+	I think it should always be on.
+
+dosdir.c,filesys.c,file.h,*fs.c:
+
+	New file system functions, release() and dupcookie(), so that
+
+	the kernel can inform file systems when it is finished
+
+	with a file cookie; networked file systems will be very
+
+	happy about this.
+
+
+
+PATCHLEVEL 2::
+
+
+
+procfs.c:
+
+	Moved the memory protection checks for proc_read and
+
+	proc_write to a separate function in memprot.c.
+
+dosfile.c:
+
+	Remove the old compatibility code for Fcntl(F_SETFL,...).
+
+	(Actually, it's commented out, so we can put it back in
+
+	if we need to.)
+
+signal.c:
+
+	Change default behaviour for SIGFPE (which is raised
+
+	by division by 0) to "ignore", same as TOS.
+
+dosdir.c:
+
+	Made Dgetcwd() use the new size parameter, so that it
+
+	works as advertised.
+
+file.h, *fs.c:
+
+	Provide a "size" parameter for the getname() file system
+
+	function, so that we can do Dgetpath() of arbitrary length
+
+	paths.
+
+util.c:
+
+	BIG_MEM_DUMP is a nasty thing for users to get;
+
+	so we shouldn't do it on all failed mallocs!
+
+
+
+PATCHLEVEL 1::
+
+
+
+proc.c:
+
+	Plugged a memory leak (dispose_proc was failing to
+
+	free the process table memory, because fork_proc
+
+	was zeroing that field in the PROC structure).
+
+main.c:
+
+	Fixed MAXMEM= (it was setting the maximum CPU time,
+
+	not the maximum memory -- I thought I tested this!)
+
+
+
+PATCHLEVEL 0::
+
+
+
+main.c:
+
+	Added MAXMEM= and SLICES= variables for mint.cnf.
+
+bios.c:
+
+	Fixed Setexc so that if the new vector is in a global
+
+	region, the region is re-marked to be super.
+
+dosmem.c:
+
+	Fixed a race condition with memory protection and
+
+	Pexec(100,...) (if the new process exited early,
+
+	the old process might still try to access it).
+
+realloc.c:
+
+	New file, for doing the Srealloc system call (for
+
+	Falcon TOS).
+
+*.*:
+
+	Merged in Allan's memory protection and debugging
+
+	code. New files: memprot.c, nalloc2.c, welcome.c.
+
+
+
 version 0.96
 
 
@@ -770,7 +2024,11 @@ dosdir.c:
 
 	relpath2cookie no longer checks drive letters
 
-	unless "depth" is > 0. Fixed this.
+	unless "depth" is > 0. Fixed this. (why did
+
+	we change relpath2cookie that way?? this is
+
+	changed back in 0.99pl2)
 
 main.c,filesys.c: