    Sorry, my english language is not good, I hope you understand what I write here.

    2011-06-30  Andreas Gerlich & Peter Schorn

    	final release 2.30

    	* some bug fixes
    	* Windows binaries produced

    2011-01-15  Jon Saxton & Andreas Gerlich

    	development version 2.31-03

    	* Jon Saxton developed a full keyboard translation system

    2009-09-25  Peter Schorn

    	release candidate 2.30-RC2

    	* Peter Schorn gives me a patch which corrects a
    	  bug in the Z80 core (simz80.c)

    	* I produce new Windows binaries with WinRAR which
    	  I buy for the project. Now you can use any directory
    	  and the link on the desktop will be correctly set.
    	  (yaze-ag-2.30-pre01-winbinaries.exe)

    2009-09-17  Andreas Gerlich

    	release candidate 2.30-RC1

    	* I found an error by handling directories under Windows.
    	  Now also windows binaries are generated.
    	  I test the Windows binaries with Windows 7 RC.

    2009-09-15  Andreas Gerlich

    	release candidate 2.30-RC
    	(please don't use it in your production environment)

    	* W.COM for exporting files as text or binary
    	  (without exiting the emulator)

    	* R.COM for importing files

    	  (look Drive L: for the SPL-Compiler and the source
    	   for W.COM is L:YWRITE.SPL, the source
    	   for R.COM is L:YREAD.SPL .
    	   Read the file 0-README.1ST !!!)

    2008-07-10  Dave Hines and Andreas Gerlich

    	final release 2.21

    	* No warnings when you compile the project.
    	  (Thanks to Dave Hines, who send me that patch! :-) )

    	* Now you can compile also with the "cc" of the Solaris OS.
    	  (see Makefile_solaris_cc and Makefile_solaris_gcc)

    2008-06-15  Andreas Gerlich

    	final release 2.20.1

    	* bug fixes in the simulated directory
    	  when you mount a Unix-Directory to a CP/M drive.

    2008-06-08  Andreas Gerlich

    	final release 2.20

    	* I complete the documentation
    	  (the use of the serial lines is now documented)
    	  (I add in the HTML-Documentation the contens of
    	   the CP/M 3 helpfile "HELP.HLP")

    	* I change/complete the install process (make install)
    	  and the startup shell script "yaze.sh"

    	* fix a severe bug when connecting (Unix-/Windows-)directories
    	  to a CP/M drive.

    	* you can use COM1 (/dev/ttyS0) and COM2 (/dev/ttyS1) ...
    	  the seriell lines to an another computer.

    2005-10-18  Andreas Gerlich

    	final release 2.12.1

    	* Bugfix: Jim Donoghue (USA, Houston, Texas) reports a bug in the
    		  Z80 assembler instructions OUTI and OUTD.

    2005-08-21  Andreas Gerlich

    	final release 2.12

    	* the "Umlaute" are handled correct now
    	  (this is only important for the Windows version of yaze-ag)

    2005-07-16  Andreas Gerlich

    	final release 2.11

    	* some changes in the Makefiles

    2005-07-05  Andreas Gerlich

    	pre release 2.10-pre

    	Windwos Versions have now the "build"-counter

    	* UCSD-Mode to run the UCSD P-System

    	* bios routines conin and conout do not mask with 0x7F

    	* I add the "DISKSORT" project

    	This version is for testing !!!

    	(read also all infomations until 2003-12-20 in this document.
    	 At 2003-12-20 I begin with this development circle)

    2005-03-05  Andreas Gerlich

    	development Version 2.02-11

    	* I adapt the emulator for the CYGWIN-Environment
    	  (remember CYGWIN is an unix environment for windows)

    	This version is for testing !!!

    	(read also all infomations until 2003-12-20 in this document.
    	 At 2003-12-20 I begin with this development circle)

    2004-08-16  Andreas Gerlich

    	development Version 2.02-10

    	* NEW: P:BIOSKRNL.Z80 changed. Now you can run Z3PLUS !!!  :-)

    	* NEW: I have to change the mount.com utility.
    	       Please don't use the old one (yaze-ag crashes) !!!

    	* NEW: I put the changed documentation to the archive.
    	       (It's the documentation of the final release 2.10)

    	This version is for testing !!!

    	(read also all infomations until 2003-12-20 in this document.
    	 At 2003-12-20 I begin with this development circle)

    2004-04-14  Andreas Gerlich

            development Version 2.02-08

    	* NEW: Now the time stamps informations are now correct on big endian
    	  (sparcv9) and on little endian (intel) machines.

    	* NEW: I integrate the new monitor command "setaccess on/off".
    	  (see also "help setaccess" in the monitor)
    	  When a Unix directory is connected to a CP/M drive normaly
    	  only update time stamps are present.
    	  If you will see also the access time stamps you switch
    	  it on with "setaccess on".
    	  (see "SET [ACCESS=ON]" in the help with HELP.COM)

    	This version is for testing !!!

    	(read also all infomations until 2003-12-20 in this document.
    	 At 2003-12-20 I begin with this development circle)

    2004-01-27  Andreas Gerlich

    	development Version 2.02-06

    	* NEW: When you connect a directory to a CP/M drive the date stamps
    	  of the unix files will now be present also under CP/M 3.1.
    	  The modification time of the unix files is the update time
    	  under CP/M 3.1 .

    	  Now it's posible to edit source files under unix/linux and
    	  to compile it under the yaze-ag emulator with the MAKE.COM
    	  (and resetdsk.com, look version 2.02-02 ) utility.

            >>>> The time stamps are only correct on little endian machine
    		(for example Intel) !!!

    	This version is for testing.

    2004-01-25  Andreas Gerlich

    	development Version 2.02-04 (internal version not uploaded)

    	* integrate the date calculation function "dayfaktor" in bios.c
    	  (It calculates the theoretical days since 1.1.0000)
    	  (Gregorian calendar)
    	  (look to the Modula-2 sources DAYS.MOD/DEF and BIRTHDAY.MOD
    	   on drive M: (disk file "Turbo-Modula-2") when you have started
    	   the emulator.)

    	* Update the CP/M 3.1 function "Get and Set Time" in bios.c to use
    	  "dayfaktor".

    	* patch cdm.c with the patch from Carl Mascott.

    	* Carl Mascott reports an error with unmounting drives.
    	  The sys.com utility makes now a full reset of all drives (BDOS 37).

    	* cleanup all sources (*.c) to use the flag -D_BSD_SOURCE for Linux
    	  (I took the knowledge about this flag from yaze-1.12)

    2004-01-20  Andreas Gerlich

    	development version 2.02-02

    	* Fix reread bug of a unix directory

    	  Describtion:
    	  When you give a ^C (CTRL-C) at the prompt of the CCP
    	  the disk system in CP/M will be reseted completely.
    	  A drive which is connected to a directory will be
    	  now fully rereaded (remount) at the next access (SELDSK).

    	  You can use the feature "Mounting Directories" if you create
    	  and edit files with vi or an another editor under unix and
    	  you want to compile the files over a compiler/assembler in yaze-ag.
    	  (This new function works also under superdos (CP/M 2.2) which is
    	  in the boot file "yaze.boot".)

    	  I add the little program "RESETDSK.Z80/COM" which resets all
    	  disks over the BDOS function 37. This is identical like the
    	  CTRL-C. You can use this utility in a submit file:

    		compile.sub:

    		;
    		resetdsk
    		;
    		; Resets all disks. Every drive will be rereaded by
    		; CP/M 3.1. Direcrories will be fully rereaded.
    		;
    		m80 d:test=c:test
    		;
    		; d: must be a disk file.
    		; c: is connected to a directory and will be fully rereaded

    	  I add to the monitor the command "remount <drive>" which you can use
    	  also in a submit file with the command "sys remount <drive>"
    	  Remount makes also a remount (reread of the unix directory) explizit
    	  of the <drive>.
    		(It tells (like mount) over the MF flag in the DPH of the
    		<drive> and the @MEDIA flag in the SCB to CP/M 3.1 that
    		this drive is "new". At the next access to the <drive>
    		CP/M 3.1 tests if the <drive> is changed and makes a
    		reread of the directory if necessary.)

    	  You can also use the work around with
    		"sys mount <drive> <unix-directory>"
    	  which I describe on the web page of yaze-ag under
    	  "Mounting Directories"

    2003-12-20  Andreas Gerlich

    	I start with further development

    	TODO:	I will fix the reread bug of a unix directory when you
    		give a CTRL-C at the command prompt or a CP/M program
    		resets the disk system over the BDOS function no. 37.
    		(bug described under the next section)

    	       (look chapter 3 "Known Bugs"
    		and chapter 7 "Mounting Directories"
    	        in yaze-ag.doc (or yaze-ag_doc.html))

    2003-12-20  Andreas Gerlich

    	Version 2.01

    	Timothy Wagner and Carl Mascott reports a complex bug in yaze-ag-2.00.
    	I test also the old version yaze-1.00. This bug is also there (I take
    	the code to access directories from yaze-1.00). I found also an
    	another error in coherence with unix directories.
    	(look to the bug fixes described here).

    	* I add to the distribution the whole HTML documentation.

    	* generate a Makefile_cygwin to compile yaze-ag also
    	  under the unix like environment "cygwin" under Windows :-)

    	* Put standalone windows binaries on the home page.

    	* The excecutable of the emulator is now
    	  named yaze_bin. That was neccessary because
    	  cygwin generates an exe-file (yaze_bin.exe) if
    	  you give no extension. The old name yaze.bin was
    	  not good for cygwin/windows. I also change this
    	  in yaze.sh (which will be copied to "yaze" if
    	  you make a "make install").

    	* I delete monitor.c_linux and monitor.c_solaris!
    	  Now there is only one monitor.c. It can be compiled
    	  under Solaris/Linux/FreeBSD/Cygwin.

    	* fix a terrible bug in function "readsector" in bios.c
    	  which reads a sector from a disk file or a unix directory:
    	  The file-cache which is used for accessing unix files
    	  was not correctly handled.
    	  That was a bug which crashes yaze-ag !!!
    	  (reported by Timothy Wagner and Carl Mascott)
    	  Have a look to yaze-ag.doc (or yaze-ag_doc.html) chapter
    	  "3. Known Bugs" and "7. Mounting Directories" !!!

    	* fix an another terrible bug in function "mountdir" in monitor.c
    	  which mounts directories to a drive under CP/M.
    	  Now double names are correctly handled (like "Source.z80"
    	  and "source.z80" which will be translated to "SOURCE.Z80"
    	  under CP/M). In the code of yaze-2.00 (and yaze-1.10 also)
    	  there was two directory entries with "SOURCE.Z80" created.
    	  Now only one of the both unix-files (Source.z80 or source.z80)
    	  gets an entry in the CP/M directory.
    	  That was a bug which crashes yaze-ag, too !!!
    	  Have a look to yaze-ag.doc chapter "3. Known Bugs" and
    	  "7. Mounting Directories" !!!

    	* BUG: A mounted unix directory does not reread once more if you
    	  give a CTRL-C (at the CCP) or a Program makes "disk resets" over
    	  the BDOS function 37. Look chapter 3 "Known Bugs" and the
    	  work around in and chapter 7 "Mounting Directories" in yaze-ag.doc
    	  (or yaze-ag_doc.html)

    2003-01-12  Andreas Gerlich

    	Version 2.00 (final release)

    	* I add the diskfile "Turbo-Modula-2" to the distribution
    	  It contents the Turbo Modula 2 Compiler of Borland.
    	  (The editor is adapted for the Linux console (25 lines, 80 columns).
    	   It works also in a xterm (but xterm starts with 24 lines,
    	   expand it to 25 lines))

    	* I made no changes (against the pre release) in the sources
    	  (I change only the printing of the version)

    2002-02-10  Andreas Gerlich

    	version 2.00 (pre release) for testing

    	* cdm.c can be compiled also under Linux

    2001-11-04  Andreas Gerlich

    	Development Version YAZE-AG-1.20-15

    	* Frank D. Cringle don't accept my work. After a half year
    	  of dicussion with him I decide to make a new project (look GPL)
    	  and I call it

    			"Yet Another Z80 Emulator by AG"
    				   or
    				"YAZE-AG"

    	* NEW: Memory Management Unit (MMU):
    	  The MMU have 16 tables to 16 page pointers (page size 4 KB)
    	  and adresses up to 1 MB.

    	* simz80.c: Optimizing: simz80 is faster than the version
    	  of yaze-1.10.
    	  NEW: I made the necessary changes to embed the MMU.

    	* NEW: I made the necessary changes to embed the MMU in
    	  the whole system. I create the new module "mem_mmu.c/.h"

    	* NEW: I develop the BIOS3 (*.z80) and the yaze-bios (bios.c)
    	  for yaze-ag:
    		* enlage bios.c to make available all necessary functions
    		  for CP/M 3.1
    		* Idea: To create the Yaze-Control-Table (YCT) for
    		  communication between the bios and yaze-bios.
    		* enlage BIOS3/yaze-bios to use the "Disc change feature"
    		  of CP/M 3.1.
    		* implement xmove in yaze-bios (this enables disks with
    		  sektor size > 128 Byte, the default sectorsize is now
    		  2048 Bytes)
    		* implement Multi-I/O in yaze-bios (CP/M 3.1 reads/writes
    		  more than one sektor in one read/write call)
    		* implement Date in yaze-bios

    	* NEW: I developed BOOTSYS a CPM3.SYS loader because the
    	  CPMLDR/ZPM3LDR does not work with the big CPM3.SYS file.

    	* NEW: CP/M 3.1 runs on the Emulator:
    	  I create the new boot file "yaze-cpm3.boot". It contents
    	  BOOTSYS + CPM3.SYS (ZPM3 is used in CPM3.SYS; it's the
    	  BDOS3 replacement of Simeon Cran) and is identical with
    	  CPM3.COM/CPM3-OK.COM on drive A: (BOOT_UTIL).
    	  The bios3 and the yaze-bios supports by the side of the
    	  fundamental features for CP/M 3.1 also the special features
    	  of CP/M 3.1 like date, xmove/move and multio (look "Features"
    	  in yaze-ag.doc (yaze-ag_doc.html))

    	* NEW: To access unix directories are adapted for CP/M 3.1

    	* BUG: cdm.c (CP/M Disk Manager) can not compiled under Linux
    	  (but under Solaris/FreeBSD/MacOS-X)

    -------------------------------------------------------------------------------

    1998-01-27  Frank D. Cringle

    	* simz80.pl: set the flags correctly for LD A,I/R and
    	CPI/CPIR/CPD/CPDR (reported by Sean Young).

    	* monitor.c (mountdir): fix fencepost error when setting cp[15],
    	as reported by Richard Hirst.

    1998-01-25  Frank D. Cringle

    	* simz80.pl: change direct and indirect references to the RAM()
    	macro, because it now evaluates its operand more than once if MMU
    	is in use (contributed by Michael Haardt).

    	* yaze.c, simz80.h: Make BIOS optional and add MMU initialisation
    	(contributed by Michael Haardt).

    Sun Apr 28 11:30:52 1996  Frank D. Cringle

    	* cdm.c (getblock): rename index to idx (avoids a warning about
    	shadowing index()).
    	(main): correct a type in the !USE_GNU_READLINE case.

    Thu Apr 25 15:32:24 1996  Frank D. Cringle

    	* bios.c (constat, lststat): select() may modify timeval, so
    	reinitialise it.
    	(readsec,writesec): protect against undefined or unmounted disk.
    	(bios): Add BgiiFix.

    	* monitor.c (mount): use MAP_FILE flag in mmap() call (linux-ism?).

    	* yaze.c (load_cpm): correctly calculate available memory if
    	loadadr is specified.

    	* simz80.pl (CALLC): rename symbol adr to avoid warning msg.

    	* cdm.c (srchdir): ignore cpm-3 byte count.