1 ==============================================================================
2 Using the Simple DirectMedia Layer on Atari
3 ==============================================================================
6 If you want to build SDL from sources to create SDL programs on Atari:
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).
12 If you want to configure a program using SDL on Atari,
16 ==============================================================================
17 I. Building the Simple DirectMedia Layer libraries:
18 (This step isn't necessary if you have the SDL binary distribution)
20 Do the classic configure, with --disable-shared --enable-static and:
22 Tos version (should run everywhere):
24 Tos does not support threads.
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.
32 Then you can make ; make install it.
34 ==============================================================================
35 II. Building the Simple DirectMedia Layer test programs:
37 Do the classic configure, then make.
41 ==============================================================================
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:
47 sdl-request@libsdl.org
49 and put "subscribe" into the subject of the message. Or alternatively you
50 can use the web interface:
52 http://www.libsdl.org/mailman/listinfo/sdl
54 ==============================================================================
55 IV. What is supported:
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/)
66 OpenGL (using Mesa offscreen rendering driver)
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
76 dma8 All Uses MFP Timer A interrupt
77 xbios TOS Uses MFP Timer A interrupt
78 xbios MiNT 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
84 gsxb All Uses GSXB callback
86 Joypad driver always uses hardware access.
87 OpenGL driver always uses OSMesa.
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.
94 (2) If you build SDL with threads using the GNU pth library, timers are
95 supported via the pth library.
97 ==============================================================================
98 V. Environment variables:
101 Set to 'xbios' to force xbios video driver
102 Set to 'gem' to force gem video driver
105 Set to filename to load as OpenGL library, if you use SDL_GL_LoadLibrary()
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
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
122 Use any of these strings in the environment variable to enable or
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
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)
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.
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:
151 mouse left button = joystick fire 0 = joystick fire 1
152 mouse right button = joystick fire 1 = joystick fire 0
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.
160 ==============================================================================
161 VI. More informations about drivers:
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.
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".
179 Video chip is detected using the _VDO cookie.
180 Screen enhancers are not supported, but could be if you know how to
183 ST, STE, Mega ST, Mega STE:
184 320x200x4 bits, shades of grey, available only for the purpose
187 320x480x8 and 320x240x8 (software double-lined mode).
189 All modes supported by the current monitor (RVB or VGA).
190 BlowUp and Centscreen extended modes, ScreenBlaster 3 current mode.
191 Clones and any machine with monochrome monitor:
195 Automatically used if xbios not available.
198 Only the current resolution, if 8 bits or higher depth.
200 IKBD keyboard, mouse and joystick driver:
201 Available if _MCH cookie is ST, Mega ST, STE, Mega STE, TT or Falcon.
203 Hades has an IKBD, but xbios is not available for video, so IKBD
206 Gemdos and bios keyboard driver:
207 Available on all machines.
209 Mouse and joystick xbios driver:
210 Available on all machines (I think).
213 Available if _MCH cookie is STE or Falcon. Supports teamtap.
216 Available with multitasking OS.
219 Available on all machines (I think).
222 Cookies _SND, MCSN, STFA and GSXB used to detect supported audio
226 8 bits DMA (hardware access)
227 STFA, MCSN or GSXB driver if installed
229 8 bits DMA (hardware access)
231 STFA, MCSN or GSXB driver if installed
233 STFA, MCSN or GSXB driver if installed
236 http://removers.free.fr/softs/stfa.html
238 http://assemsoft.atari.org/gsxb/
240 http://jf.omnis.ch/software/tos/
241 MagicSound driver (MCSN,GSXB compatible):
242 http://perso.wanadoo.fr/didierm/
243 X-Sound driver (GSXB compatible):
244 http://www.uni-ulm.de/~s_thuth/atari/xsound_e.html
247 Patrice Mandin <pmandin@caramail.com>
248 http://pmandin.atari.org/