=======================================================================faB log of changes on DOOM LEGACY, since the Linux doom sources release(23-Dec-1997) until the release of Legacy v1.20 (continued next file).-----------------------------------------------------------------------THE DOOM LEGACY PROJECT		          Contact: <legacy@newdoom.com>=======================================================================Project:  DOOM LegacyWeb site:  http://www.newdoom.com/doomlegacyLog author: Denis FabriceFri 26-12-1997: "First overview"===============*   Downloaded 'DOSDOOM' by Chi Hoang, compiled, runnable under Win95,    crash under true DOS.    No sound, no network, keyboard config doesnt work.    REAL slow! -devparm shows 2 to 3 tics per frame on a P166MMX !*   Corrected bugs in IdentifyVersion(), FindResponseFile();    Now runs under DOS.*   Added nice titlebar like original Doom, compile only with 'PC_DOS'    defined (uses conio.h).*   PC_DOS define : enable DOS/textmode specific stuff.*   asm_defs.h : defines all the stuff needed so that asm routines    know about vars and structs defined in C code.*   tmap.S : converted the x86 code to AT&T syntax for GAS, NASM could    be used but AT&T syntax is much better imho.    R_DrawColumn, R_DrawSpan restored.    Should be optimised for Pentium in the future.*   USEASM define : compile with ASM routines instead of C ones.    Actually, USEASM means i386/Pentium machine code.*   Compiled with ASM routines, runs the first time, but it's still    very slow... there's a lot of cpu time lost somewhere else than    drawing the screen.Sat 27-12-1997: - "Boris and Fab in search of the lost frame"===============*   tmap.S : FixedDiv2, FixedMul : translated to AT&T.    After some profiling with 'gprof', we've noticed that FixedDiv    and FixedMul where used a lot. We've restored the ASM ones.    A lot of cpu time freed, but still a minimum of two tics/frame...*   i_system.c : we've restored a TimerISR interrupt for counting the    gametics, like it was in the original doom.    I_GetTime was not supposed to count the tics itself, but just    return it.    I_TimerISR()    I_StartupTimer()    I_ShutdownTimer()    I_SetTimer0()    Result: IT S FAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAST !!!    Problem: we have to call the old Timer int., but not at the same    speed that our new TimerISR... but we didn't find a clean way to    call the old interrupt from the new TimerISR.    So, the old timer interrupt is called faster than 18.2/sec.    Maybe we'll have to code an IRQ wrapper in ASM like in Allegro3.0Sun 28-12-1997: - "Boris works alone"===============*   d_main.c  : no 'HOME' environment variable under DOS, now uses    'DOOMWADDIR' for development.*   tmap.S : removed use of %ebp in FixedDiv2 and FixedMul.*   wi_stuff.c : line 1660 : object "WIOBJ" lump not found, should    be used only with 'french' version, we'll have to check why the    french version is active? Replaced by "WIOSTI" for now.*   Network restored. Seems to work fine!*   m_misc.c : M_SaveDefaults, M_LoadDefaults : now handles conversion    of scancodes/ascii when reading/writing the config file.*   Downloaded 'dosdoom2' by Chi Hoang.    He goes so fast that we don't have the time to tell him the problem    with 'I_GetTime'... we'll do a release of our port soon and we'll    send him a mail. This guy got us started on dos doom sources.Mon 29-12-1997: - "Doom2 in 320x400 looks weird!"===============*   i_video.c : arranged the keyhandler from DosDoom, which didn't    PostEvent fast enough. Didn't respond when typing fast on the    keyboard.*   MULTIPLE VESA resolutions : added code to handle bank/switching    and setting of VESA modes.    - 320x400 runs 35fps on my P166mmx, 640x480 needs 2 tics per frame, which is SLOW ! (duke nukem runs at least 20fps 640x480 on my old P75...)    - works only in full screen, crashes when Statusbar displayed, still lots of positioning/resizing to check out.    - visplane 'top' and 'bottom' tables used byte for y-clipping coordinates, so of course it didn't support more than 255 lines.    - r_defs.h : visplane 'top' and 'bottom' tables changed to 'short', r_planes.c r_segs.c   : some compares used '0xff' changed to '0xffff'. This is the main stuff you have to change if you want to support multiple resolutions.    - asm_defs.h : SCREENWIDTH must be changed to test different resolutions.    - aspect ratio is not good for 320x400 and so...    NOTE ! These modifications will not be in the 'clean' source code    until it runs ok with status bar.*   ALLEGRO3.0 : we'll definitely use a lot of code from this GREAT    library by Shawn Hargreaves.    We'll use the sound code from Allegro3 for sound support, like    DosDoom2 does.Tue 30-12-1997: - "Preparing the release for our doom dos port"===============*   Boris succesfully added the sound support with Allegro3.    (as DosDoom2 does)*   A lot of work to cleanup our release:    DJGPPDOS/     contains the source code specific to DOS/W95.	     i_xxxx.c    LINUX/	     contains the source code specific to LINUX.	     i_xxxx.c    Implementation-specific code in the main directory has to be    enclosed by #ifdef PC_DOS or #ifdef LINUX, or such.    Linux code was removed from the DJGPPDOS/ implementation.*   makefile : somewhat improved to support ASM routines with -DUSEASM,	  added support for PGCC like Allegro3 makefileWed 31-12-97: - "Fixed that timer stuff!"=============*   DJGPPDOS/i_irq.c     : new timer routines, plus ticcount	i_irq.h	irqwrap.S   : asm wrapper for the irq handler	i_system.c  : removed our dirty timer code, I_GetTime		      now returns ticcount.    The timer handler is now fixed, but then the Allegro sound doesnt    work anymore, got to fix that.Thu 01-01-1998: - "===============*   3:49 - Our doom version succesfully started with 5 players, but    then it crashes after some seconds...    We used DOOMATIC (which replaces Ipxsetup) to launch the game with    5 net nodes. We used a map with 6 dmstarts.*   Yeehaa! erreur ridicule avec le define ST_Y sans parentheses...    Je peux enfin resizer en 320x240 !!! La status bar n'est pas affich閑    en entier.*   Le makefile ne marche toujours pas et ca m'enerve!*   Tests transparence avec TINTTAB, super cool.*   Dor閚avant il faut ajouter -file tinttab.wad avec un lump 'TINTTAB'.*   Dans G_Initnew(), ajout