[Atari800-users] linux framebuffer version

[Jiri S. <jir...@ds...>]

hi all,

i'm back with my ususal iPAQ abuse :-)

in last few weeks i tried to dig through atari_x11.c code. ufff. that is 
really something...

...first i tried to clean up code just for my purpose (shorter atari_x11.c 
with code used by shm and iPAQ only) and understand. hmm. strange. 
original code never worked on my desktop and works ok on iPAQ. cleaned up 
code works on desktop and segfaulted on iPAQ... i was disappointed and 
when i thought about other handheld specific problems to solve...

...i jumped right to my next (but old) idea. i started to write 
framebuffer (/dev/fb*) version of Atari800. code is specific for iPAQ 
framebuffer now, but can be extended for any HW (i tested few things on my 
x86 desktop and i think it should be usable on Sharp Zaurus PDA without 
major changes too). svgalib version replacement is possible :-))).

a lot of work remaining but it already works (touchscreen control too).

you can look at first screenshots here:
http://c0r3.dsh.cz/atari/

(yes, my keyboard bitmap is based on Vasyl's WinCE port keyboard bitmap)

why am i doing this?
for three main (PDA related) goals:

- non-problematic fullscreen
  (almost done, virtual terminal allocation for correct coexistency with 
  running Xserver remaining)

- better control without real keyboard and joystick
  (almost done, i have few new ideas (thanx to Radek Sterba too), that 
  will be implemented later)

- speed improvements
  this is a problem. i don't see any improvements against x11-shm version. 
  i hope this is a bug in my code. (exactly, with full framerate i have 
  around 90% of speed of real atari.)

that's all, if you have any comments/questions, drop me a line...


			- JirkaS