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Short: Amiga PPC port of ADoom v1.2 Author: Joseph Fenton (jlfenton@ctaz.com) Uploader: Peter McGavin (p.mcgavin@irl.cri.nz) Type: game/shoot ========================================================================== ADoom PPC 1.3 ========================================================================== By Joseph Fenton (jlfenton@ctaz.com) based on the code by Peter McGavin April 9, 1998 ========================================================================== This archive contains a PowerUP PPC port of Peter McGavin's ADoom. ADoom is a port of ID Software's Linux DOOM. You can get the original ID Software Linux DOOM source from: ftp://ftp.cdrom.com/pub/idgames/idstuff/source/doomsrc.zip Source code for ADoomPPC is in a seperate archive available on AmiNet and Amiga DOOM sites. ADoomPPC multitasks and complies with PowerUP PPC standards; it uses an Amiga standard library for high-quality sound effects and music. ADoomPPC uses ASL to request the screen mode unless overridden by the user in the parameters. ECS & OCS are not supported and AGA is not recommended, but allowed. ADoomPPC allows the selection of resolutions higher than 320x200. Resolutions up to 1600x1280 are allowable, but require a fast PPC. For people who really need the speed, low detail mode is also supported. All the features of ADoom 1.2 are supported by ADoomPPC; these include: DeHackEd file support (.DEH config files), IPX, TCP/IP, null modem cable link-up, frames-per-second display, and auto-map on the heads-up display. ADoomPPC 1.3 adds native AGA support; AGA graphics are nearly the same speed as a video card! It also makes the save games compatible with ADoom (and other DOOM conversions). Installation ============ Copy ADoomPPC to any drawer you wish. If you have gotten the MIDI instruments file (available in another archive due to its size), copy it to the same drawer. Included are two libraries for playing music and sound effects. Copy doomsound.library to your libs: drawer if you have a 68040/PPC combo card; copy doomsound.library.060 as doomsound.library to your libs: drawer if you have a 68060/PPC combo card. The only difference between the two is that the normal version uses a quad multiply for pitch bending and the 060 version uses a floating point multiply. The normal version WILL work on the 060; it is just slightly slower. If you do not copy one of the two libraries into the libs: drawer, you will only get 4 channel, non-panned sound effects. Copy a WAD file to the same drawer; if you wish to use the WAD file in a different drawer, see the instructions concerning WAD files below. Requirements ============ ADoomPPC requires an Amiga PPC accelerator with ppc.library v45.13 or later, and OS 3.0 or newer. ADoomPPC requires AGA video or a graphics card (recommended). ADoomPPC requires a WAD file compatible with DOOM for the PC or Macintosh; Hastings is selling a compilation of The Ultimate DOOM, DOOM II, and Final DOOM for around $20 (US); get it. Only whimps use the shareware wad file. WAD Files ========= WAD files must be in the program directory or in the directory specified by the environment variable DOOMWADDIR. E.G., SetEnv DOOMWADDIR "GAMES:DOOM/WAD_FILES/" will check GAMES:DOOM/WAD_FILES/ for the WAD files. The -waddir option can also be used to specify the directory of the main WAD file. E.G., ADoomPPC -waddir WAD_FILES/ will check the directory WAD_FILES relative to the current directory for a main WAD file. The '/' is optional. The path may also be an absolute path like in the environment example above. Some older Registered WAD files may not work due to later changes made to the WAD file contents. It is possible to upgrade at least some old main WAD files using freely available patches from ftp://ftp.idsoftware.com/idstuff/doom/. You need a PC to apply the patches. Playstation WAD files do not work as they are split by level and compressed. WAD files from games derived from DOOM (such as Heretic or Hexen) do not work due to differences in WAD contents. The Ultimate DOOM WAD file must be named DOOMU.WAD to work. Patch WAD Files =============== Patch WAD files are used to change graphics, sounds, and level designs on DOOM; many are available on CDROM and the net. A patch wad file is specified with ADoomPPC using the -file option. E.G., ADoomPPC -file DMINATOR.WAD (my personal favorite). Patch wads can only be used with the appropriate Registered WAD file (DOOM, DOOMU, or DOOM2). Please read the readme that accompanies the patch wad for more specific information on the patch wad requirements. A full path can be used with the -file option in case the patch wad is in another drawer. Multiple patch wads may be specified. E.G., ADoomPPC -file patch1.wad patch2.wad patch3.wad Do not ask me about specific patch wads as I have neither to time nor the inclination to bother with them. Disk Loading ============ ADoomPPC is faster when some kind of disk cacheing is used. Either a disk cache program such as DynamiCache, or the use of AddBuffers make a tremendous difference in the performance of ADoomPPC. AddBuffers is used as follows: AddBuffers GAMES: 1024 where you substitute the name of the partition ADoomPPC is on for GAMES:. I recommend adding at least 500 buffers; the more the better. In fact, if you have enough RAM, copy the WAD file to RAM: for the best speed. PPC Specifics ============= The bus clock controls the timing in ADoomPPC; if it is not set to the right value, ADoomPPC may run funny and the FPS counter will be inaccurate. The bus clock is automatically computed at the start using information supplied by the ppc.library. If the information is not correct (some versions of the ppc.library return the wrong clock information on newer PPC accelerators), you can override the computed value; to do this, specify -bus <frequncy>. E.G., ADoomPPC -bus 40000000 runs ADoomPPC with the bus clock set to 40MHz. Resolution ========== The default resolution for ADoomPPC is 320x200 and is the fastest resolution to run in. If you have more CPU power than you know what to do with, you can run ADoomPPC in higher resolutions by using the -width & -height options. E.G., ADoomPPC -width 640 -height 480 runs ADoomPPC in 640x480 resolution; select a 640x480 display mode when the ASL screenmode requester appears. The resolution must be a multiple of 64 for AGA graphics, and 32 for graphics cards. Pressing F5 toggles between high detail and low detail in any resolution. The maximum resolution is 1600x1280. Don't bother unless you have a 275MHz G3 PPC. Note that certain resolutions may overflow the cache, slowing the performance of the game. The following table was done by Peter McGavin. It shows for each standard resolution how many pixels can be rendered vertically in the cache and whether it's expected to be fast or not on a 603e or 604e. O means yes, x means no. Resolution Pix in cache Fast or not W H 603e 604e 603e 604e ------------------------------------- 320x 200 256 512 O O 320x 240 256 512 O O 352x 220 512 1024 O O 352x 264 512 1024 O O 384x 240 128 256 x O 384x 288 128 256 x x 416x 260 512 1024 O O 416x 312 512 1024 O O 448x 280 256 512 x O 448x 336 256 512 x O 480x 300 512 1024 O O 480x 360 512 1024 O O 512x 320 32 64 x x 512x 384 32 64 x x 544x 340 512 1024 O O 544x 408 512 1024 O O 576x 360 256 512 x O 576x 432 256 512 x O 608x 380 512 1024 O O 608x 456 512 1024 O O 640x 400 128 256 x x 640x 480 128 256 x x 672x 420 512 1024 O O 672x 504 512 1024 O O 704x 440 256 512 x O 704x 528 256 512 x x 736x 460 512 1024 O O 736x 552 512 1024 x O 768x 480 64 128 x x 768x 576 64 128 x x 800x 500 512 1024 O O 800x 600 512 1024 x O 832x 520 256 512 x x 832x 624 256 512 x x 864x 540 512 1024 x O 864x 648 512 1024 x O 896x 560 128 256 x x 896x 672 128 256 x x 928x 580 512 1024 x O 928x 696 512 1024 x O 960x 600 256 512 x x 960x 720 256 512 x x 992x 620 512 1024 x O 992x 744 512 1024 x O 1024x 640 16 32 x x 1024x 768 16 32 x x 1056x 660 512 1024 x O 1056x 792 512 1024 x O 1088x 680 256 512 x x 1088x 816 256 512 x x 1120x 700 512 1024 x O 1120x 840 512 1024 x O 1152x 720 128 256 x x 1152x 864 128 256 x x 1184x 740 512 1024 x O 1184x 888 512 1024 x O 1216x 760 256 512 x x 1216x 912 256 512 x x 1248x 780 512 1024 x O 1248x 936 512 1024 x O 1280x 800 64 128 x x 1280x 960 64 128 x x 1312x 820 512 1024 x O 1312x 984 512 1024 x O 1344x 840 256 512 x x 1344x1008 256 512 x x 1376x 860 512 1024 x O 1376x1032 512 1024 x x 1408x 880 128 256 x x 1408x1056 128 256 x x 1440x 900 512 1024 x O 1440x1080 512 1024 x x 1472x 920 256 512 x x 1472x1104 256 512 x x 1504x 940 512 1024 x O 1504x1128 512 1024 x x 1536x 960 32 64 x x 1536x1152 32 64 x x 1568x 980 512 1024 x O 1568x1176 512 1024 x x 1600x1000 256 512 x x 1600x1200 256 512 x x To avoid cache overflow, the -mmu option may be used to allocate the screen buffers with the memory mapped as non-cacheable by the ppc.library. E.G., ADoomPPC -width 640 -height 480 -mmu allocates the screen buffers for a 640x480 display and makes it non-cacheable. Music ===== ADoomPPC uses the doomsound.library to play music. If the library is not present, or if the MIDIInstruments file cannot be found, music is not available in ADoomPPC. The doomsound.library supports 16 stereo panned sound effects and 16 channels of stereo music; if the library is not present; only 4 channel, non-stereo sound effects will be played. To get no sound effects or music, use the -nosfx option. To get only sound effects, do not use -nosfx and -music; to get sound effects and music, use -music and do not use -nosfx. The MIDIInstruments file is very big and is in another archive. Keyboard ======== The keys are generally mapped the same as on a PC. On the Amiga, use '[' or Del for F11, ']' for F12, and Help for Pause. The keymap may be customized by changing the .doomrc file. The Right Amiga key sends the same code as Ctrl and the Left Amiga key is disabled so that Intuition commands (like screen flipping) may be done without ADoomPPC trying to use the key. By default, the numeric keypad controls the player movement; 4, 5, 6 and 8 control movement and turning; 1, 3, 7, and 9 are used for strafe. '<', ',', '>', and '.' can also be used for strafe. All key mappings can be changed in the .doomrc. Use the -rawkey option for use of raw keycodes rather than translated keycodes. Mouse ===== To use the mouse with ADoomPPC, use the -mouse option. This slows the game down while enabled. CD32 Joypad =========== If the lowlevel.library is present, the -joypad option enables the CD32 joypad for ADoomPPC. Red is Fire, Blue is Action, Yellow is Fast, Green is Return, Start/Pause is Esc, and Forward & Reverse are strafe. SEGA Genesis Controller ======================= To use a SEGA Genesis controller, use the -sega3 option for a three button Genesis controller, and the -sega6 option for a six button Genesis controller. The button mapping is as follows: Start = Space (Action) A = Strafe Right B = Fire C = Strafe Left On the 6 button controller you also get Mode = Esc (Menu) X = Return (Enter/Show last message) Y = Shift (Fast/Run) Z = Tab (Map on/off) A Sega Genesis controller may be use on the Amiga as long as you swap lines 5 & 7, and put a 470 ohm resistor between lines 5 & 7. The controller plug pinout is: 1 2 3 4 5 6 7 8 9 The best way to switch the lines is to open up the controller and change them on the circuit card. Note: doing this will make the controller incompatible with SEGA equipment; if you make the changes, you are on your own; I will not be held responsible for any damage incurred by performing the above procedure. If you aren't comfortable doing your own conversion and don't know anyone who can help, DON'T TRY IT! Get yourself a CD32 joypad. This is ONLY for people who know what they are doing and want the range of controllers available for SEGA equipment. Specifying the Screenmode ========================= If you do not want the ASL screenmode requester every time you run ADoomPPC, you can specify the screenmode you want using the -screenmode option. E.G., ADoomPPC -screenmode $40420007 If you are not sure what the screenmode ID is, run ADoomPPC without the -screenmode option, select the screenmode you wish to use, then check the mode ID printed to ADoomPPC's output window or the CLI if you ran it from a CLI. Memory ====== ADoomPPC automatically caches game information in a memory block allocated when the program is run. The default is to try to allocate 6MB of RAM. You can override this with the -heapsize option. E.G., ADoomPPC -heapsize 2048 runs ADoomPPC with 2048KB (or 2MB for those not familiar with base 16); selecting less memory makes ADoomPPC go to the harddrive more often, slowing down gameplay; selecting too little memory may cause the game to error out. FPS Counter =========== Use the -fps option to get a frames-per-second display in the upper right hand corner of the display. This shows the speed of rendering at that particular moment. The proper way to get the average speed of DOOM is to do the following: ADoomPPC -forcedemo -timedemo demo3 with the DOOM window set to 2 steps below maximum. The speed is calculated using the formula: FPS = gameticks / realticks * 35 My 150MHz 603e+ gets about 28 FPS on my Spectrum card, and about 31 FPS on my CV3D card. Remember, the FPS Counter will not be accurate if the bus clock is not set to the proper value. Rotating Map and Map On Heads Up Display ======================================== Use the -maponhu option to have the automap displayed on the main 3D view window, and use the -rotatemap option to have the automap rotate as the player turns. You can toggle through various map types by pressing 'z' while the map is displayed. DeHackEd ======== DeHackEd is a PC program that patches certain internal tables inside DOOM so that certain effects can be achieved; these include, a rapid fire shotgun, floating barrels, and many other things. ADoomPPC supports the use of DeHackEd configuration files; they have a .DEH extension on them. To use them, use the -deh option. E.G., ADoomPPC -deh TURBO.DEH Many DEH files are available on the net. Not all the features in DeHackEd are supported. Do not bug me about any additional features you want; I have neither the time nor the inclination to add more features. The original author of the DeHackEd support is Cyril Deble <Cyril.Deble@inforoute.cgs.fr>. Bug him about it. :^} NetWorking ========== ADoomPPC supports three types of networking: TCP/IP, IPX, and raw null- modem. I have not had the chance to test these yet. ADoomPPC generates ALOT of network traffic, so use a fast connection. Having one slow machine connected slows everyone down. The following is from the ADoom readme by Peter McGavin: TCP/IP: ------- AmiTCP networking in ADoom is based on the Linux DOOM source code. It works between Amigas and also with Linux PCs using TCP/IP on a fast network. You need either AmiTCP or Miami on your Amiga for it to work. Make sure you are using a recent version of AmiTCP or Miami. Fast Amigas and a fast connection help a lot too. It's best over ethernet and OK over AmigaLink. It works over a serial line with SLIP or PPP too, but people with 68030s reported unplayably poor performance. TCP/IP does not work to PCs running MSDOS or Win95, unless perhaps you can find a PC version of DOOM compiled from the Linux source code which supports TCP/IP. Several people told me Win95Doom TCP/IP does not work with ADoom. To start ADoom across 2 computers called fred and bob, say: 1: Make certain both computers are using identical WAD files; 2: Make certain you can PING fred from bob and vice versa; 3: On bob, enter: "ADoom -net 1 fred" 4: On fred, enter: "ADoom -net 2 bob" If there are 3 computers, called fred, bob and sue, say: 1: Make certain all 3 computers are using identical WAD files; 2: Make certain you can PING between all computers by name; 3: On bob, enter: "ADoom -net 1 fred sue" 4: On fred, enter: "ADoom -net 2 bob sue" 5: On sue, enter: "ADoom -net 3 fred bob" It's normal for screens to go blank sometimes during the startup phase. On Linux I used DOOM compiled from the source code available from: ftp://ftp.cdrom.com/pub/idgames/idstuff/source/doomsrc.zip I don't know whether other Linux DOOM implementations are compatible. So far I have tested up to 3 computers. The code is pretty untested and your mileage may vary. IPX: ---- IPX is the ethernet protocol used by MSDOS versions of DOOM. ADoom uses G.J.Peltenburg's amipx.library version 1.1 or higher for IPX. You can get this library from Aminet. After several evenings of struggling with the library and with checksums and big-endian/little-endian problems and with version number problems, the protocol finally seems to work, sort of... Unfortunately I did not foresee another problem. The PC version of the DOOM program I've tried so far does not exactly match Linux DOOM, even when using exactly the same WAD file. In my experience, the game often gets out of sync (consistency failure) or quits unexpectedly. So far I've only used DOOM2 version 1.666 on the PC. Perhaps version 1.9 would work better, because that's the PC version recommended for net-play with MacDOOM. Between 2 fast Amigas, ADoom with IPX works reasonably well using a2065.device. Hopefully it also works using ariadne.device and other Sana2 ethernet devices. First you should install G.J.Peltenburg's amipx.library version 1.1 or higher (from Aminet) and configure your Network number, Node, Device driver, Unit number and Frame Type in amipx_prefs. I use the Frame Type "Ethernet 802.2" and just set everything else to 0. Note that you need amipx.library at least version 1.1. Version 1.0 doesn't work. (Well, v1.0 might work with ariadne.device...) The syntax for starting ADoom with IPX is: ADoom -netipx <number-of-nodes> For example: ADoom -netipx 2 ADoom automatically waits until the number of nodes specified are found on the local ethernet, then starts the game. You should all specify the same number of nodes and you should all use the same WAD files and other options. So far I have tested up to 2 Amigas and 1 PC all at once. The code is pretty untested and your mileage may vary. If you try IPX between an Amiga and a PC, there are 2 more options you MUST know about. The -pcchecksum option tells ADoom to calculate net packet checksums the same way the PC version does. By default, ADoom calculates net packet checksums the same way Linux DOOM does, which is different. (Linux DOOM just sets the net packet checksum to 0.) If you don't use -pcchecksum, the PC will reject and ignore (nearly) all game packets. The -forceversion <number> option fools a PC into thinking you are running a particular version of DOOM. I use -forceversion 106 with DOOM2 version 1.666, for example. The default is -forceversion 110 for version 1.10. PC DOOM rejects any DOOM program that identifies itself as a different version number. Sorry I don't know an easy way of working out what number you need after -forceversion to impersonate a particular version of PC DOOM. Try -forceversion 109 with DOOM2 version 1.9, perhaps. I'm very interested to know your experiences with ADoom between PCs and Amigas using IPX. I'm told ADoom works with MacDOOM over IPX too, by the way. Thanks to G.J.Peltenburg for sending me the freely available IPX support source code from ID Software's ftp site, after modifying it for his amipx.library. DIRECT NULL-MODEM: ------------------ So many people requested a raw null-modem protocol that I sat down and implemented it for version 0.9. Well it was mainly an exercise to prepare myself for IPX. It only works between 2 Amigas with the serial ports connected by a null-modem cable. It uses 7-wire CTS/RTS handshaking, so a simple 3-conductor cable won't work. I'm pretty sure null-modem won't work between an Amiga and a PC, because I made no attempt to match the protocol. In other words, it requires 2 Amigas. I suppose it would work between 2 Amigas over a telephone line with modems. You would need to manually dial and make the connection first. Then you would need to shutdown the connection program before starting ADoom. The Hayes modem command at&d0 might be useful for leaving the modem on-line between shutting down the connection program and starting ADoom. The ADoom syntax is: ADoom -netserial <node-number> <serialdevice> <unit> <speed> For example, you could enter: ADoom -netserial 1 serial.device 0 38400 on one Amiga and ADoom -netserial 2 serial.device 0 38400 on the other. One of the Amigas is always node 1 and the other one is always node 2. It is not necessary to use serial.device. In fact artser.device or 8n1.device, if you have them, probably work more reliably or at higher speeds than serial.device. I think you should use the highest speed that both Amigas cope with. My experience is that 38400 is about the limit for 68030 Amigas. My 68040 WarpEngine works OK with artser.device at 57600. If you set the speed too high, ADoom will probably behave erratically or lock-up after a while. If you set the speed too low, I suspect the game will run only very slowly. The game tends to slow right down when there are lots of active monsters anyway. Try -deathmatch -nomonsters perhaps. I recommend you start ADoom on node 2 first. That's because node 2 is the "listener" during the setup phase. If you start ADoom on node 1 first, ADoom on node 2 is likely to open serial.device while node 1 is part way through sending a setup packet. That could lead to synchronisation problems and possible lockups. CONSISTENCY FAILURE: -------------------- Several people reported their net games ended unexpectedly with a message like: "Error: consistency failure (24805 should be 24806)" What's going on is that DOOM calculates a kind of checksum of the game's status --- player and monster positions and that kind of thing --- and sends it to all the other players in every net packet. If all the programs and WADs are identical, then they all calculate exactly the same checksum. However, if someone is using a slightly different WAD version or an incompatible version of DOOM, then a monster might be one more pixel to the left, say, and the result is "consistency failure". The test is very precise. All net nodes must run compatible versions of DOOM and all must use exactly the same WAD file and game options. To be compatible, 2 versions of DOOM must provide exactly the same features. Furthermore, they must use exactly the same random number generator and they must round arithmetic calculations exactly the same way. I have to be careful adding new features to ADoom. For example, I can't use the random number generator for anything new, nor can I add any new features that might change player and monster positions. If I optimise anything, I can't make any approximations. Otherwise ADoom definitely won't work with PC DOOM any more. Please keep this in mind if you send me source code for inclusion in ADoom. (The ideal solution would be to compile DOOM for all different platforms, MSDOS, Win95, Mac, Linux, Amiga, PSX,... from a single source. Then new features can be added simultaneously on all platforms. Now there's a job for someone...) I suspect "consistency failure" might also happen if you get network errors, such as serial line overruns. Try lowering your serial line speed, and make sure hardware handshaking is working properly. Also, if you all specify -pcchecksum things might be more reliable. That's because the default Linux net packet checksum isn't really a checksum at all. It's always 0. So any errors in the net packet are not detected unless you all use -pcchecksum. (The net packet checksum is different to the consistency checksum.) In the above, substitute ADoomPPC for ADoom. I was too lazy to retype all the above. :^} Picasso96 ========= ADoomPPC should work with the Picasso96 API as long as you don't specify -directcgx. In fact, -directcgx slows down ADoomPPC, so don't use it unless you like running slower. :^} Graffiti ======== The Graffiti card is not yet supported, but I have written drivers for it for something else, so expect it in some revision of ADoomPPC. WorkBench ========= If you use ELFLoadSeg (and you should), ADoomPPC can be run from Workbench. To get the options, set the tooltypes EXACTLY like if you were using it from a CLI. E.G., if the CLI line is ADoomPPC -forcedemo -music -joypad -screenmode $40420007 the tooltypes should be -forcedemo -music -joypad -screenmode $40420007 Options that take a value directly after them should have that value in the tooltype IMMEDIATELY FOLLOWING the tooltype specifying the option (see -screenmode option above). Bugs ==== Peter McGavin reports that the IPX only works in ADoomPPC if the PPC machine is the sender (lowest address on network). You get one column of crap on the far left in the view for resolutions wider than 320; some resolutions don't put the border patch between the view and the status bar. As far as I can tell, a bug in ppc.library v45.17 causes allocating memory as non-cacheable not to work. I am working with Phase 5 to fix the problem in a future revision of the library. Until then, stick to a resolution that has an O next to it for your processor type. Peter McGavin reports that this option DOES work on his brother's 604 PPC Amiga; you'll just have to try it on your own system to see if it works for you. Also under v45.17, on my PPC (the developer card for the Mark 2 060), ADoomPPC crashes if the PPC accesses memory at certain locations. Use the -heapsize option to lower memory if ADoomPPC crashes while doing the R_Init routine (watch the cli output). Both problems are probably PPC MMU mapping bugs in ppc.library. WWW Sites ========= There are several web pages specialising in DOOM for the Amiga. Some good ones are: http://adoom.ml.org/ has about 6 other Amiga DOOM ports http://surf.to/adoom/ fast mirror of http://adoom.ml.org/ http://homepages.which.net/~bartlett/ the Amiga DOOM Bible http://hem2.passagen.se/sids/adoom/ an ADoom-only page http://www.balldesi.demon.co.uk/ for the latest speed benchmarks http://www.boehme.demon.co.uk/aliens.html some tested 3rd party WADs http://fiction.pb.owl.de/~frank/ for another PPC port of ADoom and Aminet, of course. History ======= 1.3 April 9, 1998 Added native AGA support with triple buffering; I get 24 FPS under NTSC Low-Res 320x200 and 9 FPS under NTSC High-Res 608x380. Fixed problem with the sky not being vertically centered. Made ADoomPPC save games compatible with the 68K version; this makes it incompatible with ADoomPPC 1.2.x version save games. Fixed problem with doom- sound.library.060; you may or may not have noticed any trouble on ADoomPPC, but 060 versions of DOOM had trouble with it. 1.2.6 April 6, 1998 First public release. Added -waddir option. Fixed PCX screenshot header. 1.2.5 April 5, 1998 Not publicly released. Finally fixed AMIPX. 1.2.3 April 3, 1998 Not publicly released. Made another fix for AMIPX. Now using ppc.library to set the bus clock instead of using a fixed default. Prints cpu type, cpu clock, PLL divisor, and bus clock on startup. 1.2.1 April 2, 1998 Not publicly released. Fixed a minor problem with low detail spans. 1.2 March 31, 1998 Not publicly released. ADoomPPC uses the doomsound.library based on the ADoom_SndSrvr by yours truely. Fixed the clipped sfx problem in the sound server and reversed the channels (had them backwards). Fixed low detail problem with the Linux DOOM C code. Tried PPC assembly for R_DrawColumn and found it was only 10 ticks faster; went back to C code for column rendering. Added -bus to set the bus clock for different PPC systems. Added -mmu to allocate screen buffers as non-cacheable. Thanks to Peter McGavin for all his work on PPC caches. Acknowledgements ================ My thanks go to Peter McGavin for one of the finest ports of DOOM for the Amiga, and for making the code available so that I could do this version for the PPC. My thanks go to Peter's brother for getting a PPC for his Amiga so that Peter could beta test ADoomPPC for me; especially all the networking. My thanks go to Frank Wille for hints on linking and using PASM. Thanks also go to the people who contributed to certain features in ADoom/ADoomPPC to help make it extra special. You'll find them in the source code archives of both ADoom and ADoomPPC. If you contibuted and want credit in this readme, email me. :^} Thanks to John Carmack and ID Software for one of the best games ever!