more cleanup and fixing

libsrc/pce/readme.txt

@@ -1,19 +1,23 @@
+PC-Engine (PCE) target support for cc65. this is still work in progress and
+a couple of things need to be fixed:
+--------------------------------------------------------------------------------
 
-joystick support should get verified on real hw, the masks for buttons may be
-wrong.
-
-clock() does not work for unknown reasons
-
-get_tv() is a dummy function and always returns 0
+joystick support should get verified on real hw
+ - the masks for buttons may be wrong.
+ - 6 button gamepads are different and need slightly different code
 
 revers() is a dummy function, actual reverse output is not supported yet
 
 waitvblank() is missing
+get_tv() is missing
 
 some graphical petscii chars should get added to the charset
 
 conio-init should get initialized from a constructor rather than always get
-called from crt0
+called from crt0 (which for some reason doesnt work) -> see conio.s, it should
+get linked if _any_ of the conio function is used
+
+interruptor support in crt0 (and cfg) is missing
 
 --------------------------------------------------------------------------------
 
@@ -29,3 +33,16 @@ w/s/a/d         up/down/left/right
 numpad 2        (?) button
 numpad 3        (?) button
 enter           (start) button
+
+--------------------------------------------------------------------------------
+some useful resources on PCE coding:
+
+http://blog.blockos.org/?tag=pc-engine
+http://pcedev.blockos.org/viewforum.php?f=5
+http://www.romhacking.net/?page=documents&category=&platform=4&game=&author=&perpage=20&level=&title=&desc=&docsearch=Go
+http://archaicpixels.com/Main_Page
+
+http://www.magicengine.com/mkit/doc.html
+
+https://github.com/uli/huc
+http://www.zeograd.com/parse.php?src=hucf