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@@ -0,0 +1,450 @@ +GNU MDK -- History of visible changes. + +Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, Free Software Foundation, Inc. +See the end for copying conditions. + +Please send mdk bug reports to bug-mdk@gnu.org. + +--------------------------------------------------------------------------- +* Version 1.2.1 (20/09/05) + +** MIXAL compliance improvements (Sergey Poznyakoff): + + - w-expressions in literals are now admitted (e.g. LDA =8(1:1)=) + - ALF now accepts non-quoted arguments (in addition to quoted + - ones), as in the original TAOCP definition. + +** German translation updated (thanks to Jens Seidel) + +** mixal.el improvements (Pieter Pareit) + +** Bug fixes: + + - gmixvm's failure to dynamically link with libglade (#13661) + (thanks to Sascha Wilde) + - mixal.el calls mixasm with obsolete -g option (#14569) (thanks to + Sascha Wilde) + - mixasm -g causes a coredump (#14579) (Pieter Pareit) + +--------------------------------------------------------------------------- +* Version 1.2 (05/08/04) + +** Graphical user interface (gmixvm) updated to gtk+ 2.4.x + + - gmixvm now uses the latest version of the gtk+ toolkit, including + antialiased Pango fonts. + - Individually detachable windows for the virtual machine, the + source window and the devices notebook (there is no 'split mode' + anymore). + - Detachable toolbars. + - Current source line and breakpoints are now marked via icons. + - New menu option to change all fonts at once. + +** German i18n available (thanks to Mike Scholz). Set LANG to + de_DE.UTF-8 to use it. + +** mixasm includes debug info in compiled mix files by default: the + options -g and --debug are gone; if you want to compile without + debug info, use -O or --ndebug. + +--------------------------------------------------------------------------- +* Version 1.1 (12/06/04) + +** The typewriter device (19) is now input/output, so that you can + read characters from standard input (mixvm) or a popup dialog + (gmixvm) in your MIXAL programs (see samples/echo.mixal for a + simple usage sample). + +** Input character device files may now contain lines with less than the + required block size; the virtual machine pads the missing + characters in memory using 0 (MIX char 'space'). + +** The paper tape device (20) was incorrectly defined as an output + device. It is now an input char device (cf. TAOCP vol.1 p. 133, + where it is mentioned as the 'paper tape reader'; thanks to Michael + Talbot-Wilson). + +** Listings produced by mixasm improved: better layout, and correct + identification of 'ALF' and 'CON' instructions (including those + added by the compiler as a result of local constant definitions and + future references. + +** Local constants can now be modified by a field spec or an index, + as in, say, CMPA =0=,1(3:2) (closes #5654). + +** The virtual machine reader is now case-insensitive, i.e., it + automatically converts lowercase characters in input char device + files to their uppercase counterparts (which are the only ones + admitted by MIX). The ASCII representation for MIX chars delta, + sigma and pi is now ~, [ and #. + +** Bug fix: mixvm prompt's ending whitespace is now correctly set. + +** Bug fix: blocks in input char devices (e.g. the card reader) are + now expected to be separated by newlines, mirroring char output, + which is done so (i.e. with one ASCII line per block). + +** Improved virtual machine error messages (bad memory address, device + no., fspec, etc.). + +** Bug fix: undefined symbols are transformed to new addresses just + before the end of a compiled program (as per TAOCP v1 p. 156; + thanks to WeiZeng). + +** Bug fix: the vm no longer blows up on memory access violations + (thanks to Joel R. Holveck; closes #5649). + +** Bug fix: LDAN, LDXN and LDiN always negate the result, even if zero + (thanks to Ruslan Batdalov; closes Debian's #247392). + +--------------------------------------------------------------------------- +* Version 1.0.1 (09/06/03) + +** New misc/mixal-mode.el for emacs (and associated docs), written by + Pieter Pareit. + +** Error message for unquoted ALF operand improved. + +** Fixed bug that caused (g)mixvm to segfault when reading a false MIX + file. + +** All translatable strings are ready for i18n. + +** Portability fixes to extend supported platforms. + +** When the program counter reaches address 4000 during program + execution, it is set back to its maximum value, 3999, and the + program halts, to avoid infinite loops. + +** Minor documentation improvements. + +** Minor bug fixes. + +--------------------------------------------------------------------------- +* Version 1.0 (08/04/02) + +** The stable release. + +** New command line option added to 'mixvm': -t (--time) to turn on + virtual execution time printing (it is now off by default). + +** New 'mixvm' command: prompt, lets you change the mixvm command + prompt ("MIX > " by default). + +** When the program counter reaches address 4000 during program + execution, it wraps up to value 0, to keep always a valid + address. Caveat: a program missing the HLT instruction can loop + indefinitely. + +** New supported platform: Mac OS X. + +** User manual reviewed and updated. + +** Bug fix: 'configure' libraries detection now works properly. + +** Bug fix: missing #includes added to avoid compilation errors in + some platforms (RedHat 7.1, ia64 with gcc 3.0). + +--------------------------------------------------------------------------- +* Version 0.5 (29/09/01) + +** Added Guile support: + - New utility 'mixguile': a Guile shell with an embedded MIX + virtual machine. + - gmixvm and mixvm have an embedded Guile interpreter: Scheme + can be used as an extension language. + - See the updated User's Manual for details. + +** New (g)mixvm commands: + - psrc: print the current program's source file path + - pprog: print the current program's path + - pline: print the current program line + - pstat: print the current virtual machine status + - slog: set on/off the logging of info messages to stdout (or + the command log in gmixvm) + +** For the sake of coherence, the following (g)mixvm commands + have been renamed: + - tracing -> strace + - timing -> stime (set on/off timing), + ptime (print timing stats) + - devdir -> sddir (set the devices dir), + pddir (print the devices dir) + +** Major documentation update to include Guile support and various + cosmetic corrections for pretty ps and pdf manuals (provided in the + distribution in addition to the html format). + +** In gmixvm, when a font specified in the config file cannot be + loaded, it is removed from the configuration. + +** gmixvm now accepts the standard command line options -vuh + +** Bug fix: when the MIX font is changed in gmixvm, the loc widget + font is correctly updated. + +** Bug fix: help messages are now correctly aligned in (g)mixvm. + +** Bug fix: timing statitics for the MOVE instruction are correctly + computed. + +** Bug fix: pressing return at an empty 'MIX >' prompt does not + produce an error message. + +** Bug fix: the configure script now correctly detects the absence of + libglade (needed by gmixvm). + +** Bug fix: makefiles corrected so that mdk accepts a VPATH build + ('make distcheck' works now) + +--------------------------------------------------------------------------- +* Version 0.4.2 (17/08/01) + +** New toolbars for gmixvm windows. + +** Toolbars can be hidden, using View->Toolbar checkbox. + +** New icon for the "goto loc pointer address" button. + +** The menu entry "Split windows" has been moved from "Settings" to + "View" main menu, and renamed to "One window" in split mode. + +** In split mode, the MIXAL window has its own statusbar to display + symbol values in it (instead of in the main window toolbar). + +** Bug fix: the visibility of split windows when changing mode is now + correctly handled. + +** Bug fix: the devices window is now correctly destroyed, avoiding + GTK warnings on gmixvm exit. + +--------------------------------------------------------------------------- +* Version 0.4 (22/07/01) + +** Split mode: gmixvm can now be run with the MIXVM, MIXAL and Devices + windows detached (instead of arranged in a notebook). + +** When running in split mode, the MIXVM, MIXAL and Devices windows + can be hidden. + +** Conditional breakpoints can be set in mixvm and gmixvm using the + commands 'sbp[rmco]', which cause the execution to stop when a + given register, memory cell contents, comparison flag or overflow + toggle change (e.g. 'sbpr A' will set a breakpoint on register A + contents change). Conditional breakpoints can be deleted using the + new commands 'cbp[rmco]'. + +** New vm command 'pbt' which prints a backtrace of the last executed + instructions. + +** The gmixvm main window displays the path to the current MIX file in + its title bar. + +** The mixvm and gmixvm configuration files are now stored in ~/.mdk + (instead of ~/.gmixvm). + +** The default device files directory is also ~/.mdk. It can be + configured using the new command 'devdir' or (in gmixvm) with the + new Settings->Devices dir menu command. + +** The commands 'tron' and 'troff' have been substituted by 'tracing + on|off'. + +** The trace flag is saved as a configuration parameter in mixvm and + gmixvm. + +** New vm commands: 'pedit'/'sedit' (print/set editor command) and + 'pasm'/'sasm' (print/set compile command). Their value is stored as + a config param also in mixvm. + +** New command 'timing' for setting on/off and printing the timing + statistics (both in gmixvm and mixvm). Its value is also stored as + a config param. + +** mixvm and gmixvm now save a history file so that they remember + commands typed in previous sessions. + +** Bug fix: changes in the device format are now correctly stored (gmixvm). + +--------------------------------------------------------------------------- +* Version 0.3.5 (23/06/01) + +** In gmixvm, when the mouse pointer is over a MIXAL source line, the + status bar shows the value of the variables appearing in this line. + +** The current symbol table can be displayed, in gmixvm, using the menu + command Debug->Symbols... + +** Bug fix: the load, compile and run file dialogs now get the correct + filename under linux. + +** Bug fix: fonts used by gmixvm are now always correctly saved. + +** Bug fix: 'psym' now works correctly in gmixvm. + +** Bug fix: the symbol table for a MIX file is now correctly recovered + both in gmixvm and mixvm (negative values where incorrectly + converted to a positive value). + +--------------------------------------------------------------------------- +* Version 0.3.4 (12/06/01) + +** Bug fix for a segfault which made gmixvm unusable in version 0.3.3. + +--------------------------------------------------------------------------- +* Version 0.3.3 (10/06/01) + +** The output of the contents of binary devices in gmixvm can be + configured to be in decimal or word format (for each block device). + +** The main gmixvm window is not shown until it is completely drawn. + +** The commands 'edit' and 'compile' are now understood by gmixvm. The + external programs used can be configured using the menu entry + Settings->External programs. + +** The commands 'edit' and 'compile' can be now executed without + argument (both in mixvm and gmixvm). When no argument is given, the + MIXAL source file corresponding to the currently loaded MIX program + is edited/compiled. + +** Bug in CON fixed : 'CON wexpr' didn't compile correctly unless wexpr + represented a valid instruction; now, wexpr can evaluate to an + arbitrary value (Vasilij Ozmetelenko). + +** The completion key for the gmixvm command prompt is now TAB + (instead of RETURN). + +** The gmixvm command prompt maintains now a history of previously + typed commands, which can be visited using the arrow keys (UP for + previous command, DOWN for next one). + +** When a file is reloaded by the virtual machine (both in mixvm and + gmixvm), the currently set breakpoints are conserved. + +** When compiling a source file which is not in the current directory, the + correct path is now stored in the compiled file. + +** Fixed a bug which caused gmixvm to segfault when creating the + virtual machine (Andrew Hood) + +** The GNU MDK documentation is now distributed under the GFDL + license. + +--------------------------------------------------------------------------- +* Version 0.3.2 (10/05/01) + +** The colors used for highlighting MIXAL source lines in gmixvm are now + customizable. + +** The fonts used in the different gmixvm widgets are now + customizable. + +** Input/output for all MIX block devices is shown in gmixvm. + +** All gmixvm customizations are stored in a configuration file + (inside ~/.gmixvm directory). + +** Device files used by gmixvm are stored in ~/.gmixvm, instead of the + working directory. + +** Output to binary devices works now correctly. + +** Bug on pmem fixed (thanks to Christoph von Nathusius and Jason + Uhlenkott). + +--------------------------------------------------------------------------- +* Version 0.3.1 (9/04/01) + +** New binary and html RPMs (RedHat) contributed by Agustin Navarro + <anp@cantv.net>. + +** The package can be correctly build in FreeBSD 4.2 (Ying-Chieh Liao) + +** Fixed configuration process when included gettext is used. + +** The info files are now properly categorized in a dir entry, so that + they can be properly installed. + +** Compilation warnings fixed. + +** getopt implementation provided for systems missing it. + +--------------------------------------------------------------------------- +* Version 0.3 (28/03/01) + +** MDK is now an official GNU package. + +** New GTK+ interface for the virtual machine (gmixvm). + +** New mixvm-Emacs/GUD interface via mixvm.el (Philip King). + +** Readline and history support for mixvm are now optional features. + +** JRED is now properly implemented (bug pointed out by + Vasilij Ozmetelenko). + +--------------------------------------------------------------------------- +* Version 0.2 (07/01/01) + +** mixvm provides virtual execution time statistics after each + invocation of run or next. + +** mixvm can trace instructions as they are executed. tron/troff + commands turn on/off instruction tracing. + +** mixvm accepts a new command, w2d, which computes the + decimal value of a MIX word given as a series of + bytes (e.g. - 01 00 34 32 22). + +** Symbols can be defined at the mixvm prompt with the + new command ssym. + +** mixvm accepts a new command, weval, which allows the + evaluation of MIXAL w-expressions. + +** Expressions containing strings of successive '*' are now + correctly evaluated. + +** When using block devices in mixvm, the buffers are now + flushed after each OUT operation. + +--------------------------------------------------------------------------- +* Version 0.1.1 (18/11/00) + +** MDK is now compilable in rpm-based linuxes. +** MDK fully compliant with Knuth's specification. In particular, + local symbols are now properly handled in special cases such as + 3H ORIG 3B + instructions. See samples/stress{1,2}.mixal. +** Future references affected by unary minus are accepted + with a warning (they are banned in Knuth's specification). + Also future refs in EQU directives are now properly handled. + See samples/stress{3,4}.mixal. +** When mixvm executes a program and reaches the end of the + available memory without encountering a HALT instruction, + it halts anyway. + +--------------------------------------------------------------------------- +* Version 0.1 (31/10/00) + +** Initial version + +--------------------------------------------------------------------------- +Copying information: + +Copyright (C) 2000, 2001, 2002, 2003 Free Software Foundation, Inc. + + Permission is granted to anyone to make or distribute verbatim copies + of this document as received, in any medium, provided that the + copyright notice and this permission notice are preserved, + thus giving the recipient permission to redistribute in turn. + + Permission is granted to distribute modified versions + of this document, or of portions of it, + under the above conditions, provided also that they + carry prominent notices stating who last changed them. + + +--- +$Id: NEWS,v 1.55 2005/09/20 20:18:58 jao Exp $ |