Added initial support for Atari (thanks Patrice!)

--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%40282

README.MiNT

@@ -0,0 +1,80 @@
+
+==============================================================================
+Using the Simple DirectMedia Layer on Atari
+==============================================================================
+
+==============================================================================
+I.  Building the Simple DirectMedia Layer libraries:
+    (This step isn't necessary if you have the SDL binary distribution)
+
+  Do the classic configure, with --disable-shared --enable-static and:
+
+    Tos version (should run everywhere):
+      --disable-audio --disable-threads
+    Tos does not support threads, so can not support audio, maybe in a future
+    version audio support will be added via interrupts.
+
+    MiNT version (maybe Magic, only for multitasking OS):
+      --disable-pthreads --enable-pth
+    Mint and Magic may supports threads, so audio can be used with current
+    devices, like Sun audio, or disk-writing support. Like Tos, interrupt
+    audio without threads is more suited for Atari machines.
+
+  Then you can make ; make install it.
+
+==============================================================================
+II. Building the Simple DirectMedia Layer test programs:
+
+  Do the classic configure, then make.
+
+  Run them !
+
+==============================================================================
+III.  Enjoy! :)
+
+  If you have a project you'd like me to know about, or want to ask questions,
+  go ahead and join the SDL developer's mailing list by sending e-mail to:
+
+	sdl-request@libsdl.org
+
+  and put "subscribe" into the subject of the message. Or alternatively you
+  can use the web interface:
+
+	http://www.libsdl.org/mailman/listinfo/sdl
+  
+==============================================================================
+IV.  What is supported:
+
+Keyboard (GEMDOS, BIOS, Ikbd)
+Mouse (XBIOS, GEM, Ikbd)
+Video (XBIOS (Fullscreen), GEM (Windowed and Fullscreen))
+Timer (VBL vector)
+
+- What is missing:
+Audio support (TOS)
+CDROM support (Metados, /dev/cdrom)
+Joystick and joypad support (Hardware)
+Threads support (TOS)
+
+- Driver combinations:
+Video	Kbd	Mouse	Timer
+xbios	ikbd	ikbd	vbl
+xbios	gemdos	xbios	vbl
+xbios	bios	xbios	vbl
+gem	gem	gem	vbl
+
+==============================================================================
+V.  Environment variables:
+
+SDL_ATARI_EVENTSDRIVER
+	Set to 'ikbd' to force IKBD 6301 keyboard driver
+	Set to 'gemdos' to force gemdos keyboard driver
+	Set to 'bios' to force bios keyboard driver
+
+SDL_VIDEODRIVER:
+	Set to 'xbios' to force xbios video driver
+	Set to 'gem' to force gem video driver
+
+-- 
+Patrice Mandin <pmandin@caramail.com>
+http://www.multimania.com/pmandin