1 ============================================================================== 2 Using the Simple DirectMedia Layer on Atari 3 ============================================================================== 4 5 6 If you want to build SDL from sources to create SDL programs on Atari: 7 see sections I - II. 8 9 If you want to create SDL programs on Atari using SDL binary build, 10 download it from my web site (URL at end of this file). 11 12 If you want to configure a program using SDL on Atari, 13 see sections IV - VI. 14 15 16 ============================================================================== 17 I. Building the Simple DirectMedia Layer libraries: 18 (This step isn't necessary if you have the SDL binary distribution) 19 20 Do the classic configure, with --disable-shared --enable-static and: 21 22 Tos version (should run everywhere): 23 --disable-threads 24 Tos does not support threads. 25 26 MiNT version (maybe Magic, only for multitasking OS): 27 --disable-pthreads --enable-pth 28 Mint and Magic may supports threads, so audio can be used with current 29 devices, like Sun audio, or disk-writing support. Like Tos, interrupt 30 audio without threads is more suited for Atari machines. 31 32 Then you can make ; make install it. 33 34 ============================================================================== 35 II. Building the Simple DirectMedia Layer test programs: 36 37 Do the classic configure, then make. 38 39 Run them ! 40 41 ============================================================================== 42 III. Enjoy! :) 43 44 If you have a project you'd like me to know about, or want to ask questions, 45 go ahead and join the SDL developer's mailing list by sending e-mail to: 46 47 sdl-request (a] libsdl.org 48 49 and put "subscribe" into the subject of the message. Or alternatively you 50 can use the web interface: 51 52 http://www.libsdl.org/mailman/listinfo/sdl 53 54 ============================================================================== 55 IV. What is supported: 56 57 Keyboard (GEMDOS, BIOS, GEM, Ikbd) 58 Mouse (XBIOS, GEM, Ikbd, /dev/mouse (non working atm, disabled)) 59 Video (XBIOS (Fullscreen), GEM (Windowed and Fullscreen)) 60 Timer (VBL vector, GNU pth library) 61 Joysticks and joypads (Ikbd, Hardware) 62 Audio (Hardware, XBIOS, GSXB, MCSN, STFA, /dev/audio if threads enabled) 63 Threads (Multitasking OS only via GNU pth library) 64 Shared object loader (using LDG library from http://ldg.atari.org/) 65 Audio CD (MetaDOS) 66 OpenGL (using Mesa offscreen rendering driver) 67 68 - Dependent driver combinations: 69 Video Kbd Mouse Timer Joysticks 70 xbios ikbd ikbd vbl(2) ikbd 71 xbios gemdos xbios vbl(2) xbios 72 xbios bios xbios vbl(2) xbios 73 gem gem gem(1) vbl(2) xbios 74 75 Audio O/S Misc 76 dma8 All Uses MFP Timer A interrupt 77 xbios TOS Uses MFP Timer A interrupt 78 xbios MiNT Uses MFP Timer A interrupt 79 xbios Magic Uses MFP Timer A interrupt 80 stfa All Uses MFP interrupt 81 mcsn TOS Uses MFP Timer A interrupt 82 mcsn MiNT Uses MiNT thread 83 mcsn Magic Disabled 84 gsxb All Uses GSXB callback 85 86 Joypad driver always uses hardware access. 87 OpenGL driver always uses OSMesa. 88 89 (1) GEM does not report relative mouse motion, so xbios mouse driver is used 90 to report this type event. 91 A preliminary driver for /dev/mouse device driver is present, but is disabled 92 till it can be used with other applications simultaneously. 93 94 (2) If you build SDL with threads using the GNU pth library, timers are 95 supported via the pth library. 96 97 ============================================================================== 98 V. Environment variables: 99 100 SDL_VIDEODRIVER: 101 Set to 'xbios' to force xbios video driver 102 Set to 'gem' to force gem video driver 103 104 SDL_VIDEO_GL_DRIVER: 105 Set to filename to load as OpenGL library, if you use SDL_GL_LoadLibrary() 106 107 SDL_AUDIODRIVER: 108 Set to 'mint_gsxb' to force Atari GSXB audio driver 109 Set to 'mint_mcsn' to force Atari MCSN audio driver 110 Set to 'mint_stfa' to force Atari STFA audio driver 111 Set to 'mint_xbios' to force Atari Xbios audio driver 112 Set to 'mint_dma8' to force Atari 8 bits DMA audio driver 113 Set to 'audio' to force Sun /dev/audio audio driver 114 Set to 'disk' to force disk-writing audio driver 115 116 SDL_ATARI_EVENTSDRIVER 117 Set to 'ikbd' to force IKBD 6301 keyboard driver 118 Set to 'gemdos' to force gemdos keyboard driver 119 Set to 'bios' to force bios keyboard driver 120 121 SDL_JOYSTICK_ATARI: 122 Use any of these strings in the environment variable to enable or 123 disable a joystick: 124 125 'ikbd-joy1-[on|off]' for IKBD joystick on port 1 (hardware access) 126 'xbios-joy1-[on|off]' for IKBD joystick on port 1 (xbios access) 127 'porta-pad-[on|off]' for joypad and/or teamtap on port A 128 'porta-joy0-[on|off]' for joystick 0 on port A 129 'porta-joy1-[on|off]' for joystick 1 on port A 130 'porta-lp-[on|off]' for lightpen on port A 131 'porta-anpad-[on|off]' for analog paddle on port A 132 'portb-pad-[on|off]' for joypad and/or teamtap on port B 133 'portb-joy0-[on|off]' for joystick 0 on port B 134 'portb-joy1-[on|off]' for joystick 1 on port B 135 'portb-anpad-[on|off]' for analog paddle on port B 136 137 Default configuration is: 138 'ikbd-joy1-on' (if IKBD events driver enabled) 139 'xbios-joy1-on' (if gemdos/bios/gem events driver enabled) 140 'porta-pad-on portb-pad-on' (if available on the machine) 141 142 port[a|b]-[pad|joy?|lp|anpad]-* strings are mutually exclusives. 143 On such a port, you can only use a joypad OR 1 or 2 joysticks OR 144 a lightpen OR an analog paddle. You must disable joypad before 145 setting another controller. 146 147 The second joystick port on IKBD is used by the mouse, so not usable. 148 Another problem with the IKBD: mouse buttons and joystick fire buttons 149 are wired together at the hardware level, it means: 150 port 0 port 0 port 1 151 mouse left button = joystick fire 0 = joystick fire 1 152 mouse right button = joystick fire 1 = joystick fire 0 153 154 Descriptions of joysticks/joypads: 155 - Joypads: 1 hat, 17 buttons (Atari Jaguar console-like). 156 - Joysticks: 1 hat, 1 button. 157 - Lightpen, analog paddles: 2 axis, 2 buttons. The 2 buttons are those 158 affected to 1 button joysticks on the same port. 159 160 ============================================================================== 161 VI. More informations about drivers: 162 163 OpenGL: 164 The default is to use the Mesa offscreen driver (osmesa.ldg). If you want 165 to use an older OpenGL implementation, like mesa_gl.ldg or tiny_gl.ldg, 166 your program must use SDL_GL_LoadLibrary() to do so, and retrieve the 167 needed function pointers with SDL_LoadFunction(). In all cases, the OpenGL 168 context is taken care of by SDL itself, you just have to use gl* functions. 169 170 However, there is one OpenGL call that has a different prototype in the old 171 implementations: glOrtho(). In the old implementations, it has 6 float as 172 parameters, in the standard one, it has 6 double parameters. If you want 173 to compile testdyngl, or any other SDL program that loads its OpenGL 174 library, you must change the glOrtho() prototype used in this program. In 175 osmesa.ldg, you can retrieve a glOrtho() with double parameters, by 176 searching for the function "glOrtho6d". 177 178 Xbios video: 179 Video chip is detected using the _VDO cookie. 180 Screen enhancers are not supported, but could be if you know how to 181 use them. 182 183 ST, STE, Mega ST, Mega STE: 184 320x200x4 bits, shades of grey, available only for the purpose 185 of testing SDL. 186 TT: 187 320x480x8 and 320x240x8 (software double-lined mode). 188 Falcon: 189 All modes supported by the current monitor (RVB or VGA). 190 BlowUp and Centscreen extended modes, ScreenBlaster 3 current mode. 191 Milan: 192 Experimental support 193 Clones and any machine with monochrome monitor: 194 Not supported. 195 196 Gem video: 197 Automatically used if xbios not available. 198 199 All machines: 200 Only the current resolution, if 8 bits or higher depth. 201 202 IKBD keyboard, mouse and joystick driver: 203 Available if _MCH cookie is ST, Mega ST, STE, Mega STE, TT or Falcon. 204 205 Hades has an IKBD, but xbios is not available for video, so IKBD 206 driver is disabled. 207 208 Gemdos and bios keyboard driver: 209 Available on all machines. 210 211 Mouse and joystick xbios driver: 212 Available on all machines (I think). 213 214 Joypad driver: 215 Available if _MCH cookie is STE or Falcon. Supports teamtap. 216 217 PTH timer driver: 218 Available with multitasking OS. 219 220 VBL timer driver: 221 Available on all machines (I think). 222 223 Audio drivers: 224 Cookies _SND, MCSN, STFA and GSXB used to detect supported audio 225 capabilities. 226 227 STE, Mega STE, TT: 228 8 bits DMA (hardware access) 229 STFA, MCSN or GSXB driver if installed 230 Falcon: 231 8 bits DMA (hardware access) 232 Xbios functions 233 STFA, MCSN or GSXB driver if installed 234 Other machines: 235 STFA, MCSN or GSXB driver if installed 236 237 STFA driver: 238 http://removers.free.fr/softs/stfa.html 239 GSXB driver: 240 http://assemsoft.atari.org/gsxb/ 241 MacSound driver: 242 http://jf.omnis.ch/software/tos/ 243 MagicSound driver (MCSN,GSXB compatible): 244 http://perso.wanadoo.fr/didierm/ 245 X-Sound driver (GSXB compatible): 246 http://www.uni-ulm.de/~s_thuth/atari/xsound_e.html 247 248 -- 249 Patrice Mandin <patmandin (a] gmail.com> 250 http://pmandin.atari.org/ 251
