• Local staticS can be initialized now.
• New variable-type : zstatic.
  Variables declared zstatic are moved into the Zeropage-BSS.
  
• Little change in runtime.m65 :
  The push-subroutine does not call another subroutine anymore. Makes things a little bit faster.

• Corrected ra65s handling of ldau,ldax,ldas :
  Zeropage-location have been treated as absolute.
• Removed a bug in symbol-handling, concerning xref and xrefzp and equ:
  

    xrefzp lall    my_lall equ lall  

  The label my_lall got the value 0 :).

• link65 will generate an error if the Zeropage-space is overun.
  Note: By default Zeropage-BSS starts at $80, this can be changed to $10, if no register variables are used ! (Sure for the library !)

1. Segments
   The linker and assembler support 4 segments:
   1. Zeropage : bsszp
   2. Code : text
   3. initialized data : data
   4. uninitialized data : bss

• I found out that gcc's "-s"-options has the opposite meaning. Therefor all the binaries had the complete symbol-table. Changed now. Smaller now.
• cc65 accepts now the C++ comments :
  

  // this is a comment  /* and this  // also  */  

• I forgot to include all the documentation about cc65 in the cc65src-archive. Now it's in.
• char is of course signed and not unsigned as I wrote in the last update-notes !!

• directory-structure
  NOTE:
  I moved lynx.olb, c.olb and runtime.run to cc65/lib.
• cc65
  1. structS can be defined like in an(s)y C. The limitation for struct-members is gone.
  2. register-variables are correctly saved/restored.
     Note: They are saved on the 65C02-stack, so be carefull, don't declare big arrays as register.
  3. char is now signed in any case.
     Before, static and register charS where handled as unsigned char.
     Note: I strongly recommend to use uchar where possible !!
  4. Removed the optimizer (see below).
  5. Improved/changed the expression-handling. Now every weired expression should work.
  6. Added interrupt for function-declarations.
     e.g.

     vbl() interrupt  {    if ( doswap )    {      SwapBuffers();      doswap = 0;    }  }  

     This helps the compiler to check the code.E.g no register variables are allowed during interrupts !
  7. Added a new command : asm( string ).
     This command allows now to write 65C02-macros. It looks a lot bettern than the old #asm/#endasm way. See lynx.h for more.
  8. Added at for global variable declarations:
     e.g.

     unsigned char joybut at 0xfcb0;  

     See lynx.h for more.
  9. The preprocessor accepts now "\" at the end of a line to append the next line.
  10. The preprocessor knows "#" in macro-definitions.

      #define test(a) printf("Hello "#a)            test(World);  

      is expanded to

              printf("Hello ""World");  

• ra65
  1. External identifiers have to be declared using xref. Otherwise ra65 produces an "..." undefined-error.
  2. That's all...
• xopt
  I decided to remove the optimizer and rewrite xopt. The reason is
  • a) xopt sees the complete file.
  • b) It is easier to up-date.
  • c) It was fun.
  I strongly recommend xopt as it reduces the code-size a lot (two coming projects loose 3..5KB after xopt).
• bin2obj
  Removed a bug which caused the output-file to be 1 byte to big if the input-file was a multiple of 32.
• runtime.run
  Some optimizations and some bug-fixes have taken place in runtime.run. Mainly to fit with cc65 but also to handle char correctly.
• lynx.h
  • Changed the definitions of hardware-addresses to the use of at and added a lot more.
  • Added some (hopefully) usefull macros like CLI,SEI ...
  • lynx.h includes now global.h and runtime.h which are needed for ra65 !
• runtime.h
  This header simply includes labels.m65 from the runtime-folder which contain the xref definitions of runtime.run
• lynxlib.h
  This header contains prototypes for lynx.olb, variable-definitions and macros.
• lynx.olb
  • I added the bcd and print-routines by Matthias Domin.
  • Optimized nearly all routines for speed/space.
  • replaced seedrand() / genrand() with random() which is shorter and faster.
    Thank you Rob !
• c.olb
  • Removed the old XL-routines.
  • Added memset by Matthias Domin.
  • Optimized some routines.
  • Added the old runtime multiplication and division routines. These are needed during interrupts.

97/07/25

• Had to change 'preproc.c' to allow #asm/#endasm within #if/#endif
• Changed 'demo.c65' (better demo0): It now uses Suzy and the lady is displayed with double size. Just check it out.
• Moved 'random.m65' from demos into 'lynx.olb'.
  New functions:
  

  seedrand(int a);  int genrand();  

• void SetBuffers(char * screen,char * render,char * collision)
  For single-buffered, no collision call : SetBuffers(MY_SCREEN,0,0);
  
• void SetRGB(char * pal); with char pal[32];
  Set the Lynx-palette registers. Values like in $fda0..$fdbf.
• void Flip();
  Flip left/right.
• void SwapBuffers();
  For double-buffering: Swap display-buffer <-> render-buffer
• void SetPixel(int x,int y,char color);
  
• char GetPixel(char x,char y);
  
• void DrawLine(int x1,int y1,int x2,int y2,char color);
  
• void DrawFBox(int x1,int y1,int w,int h,char color);
  

• Added 'register' variables, which work for all types even such as arrays and structs.
  The 'registers' are a special zeropage-area from $08 to $7F.
• Added new optimizations:
  
  • x<<=const or x>>=const
    The old code looked like this:
    

       jsr pushax      ldax #const      jsr asltos     -or- jsr asrtos   

    but now it looks like this
    

       ldy #const     jsr aslaxy     -or- jsr asraxy  

    or if const == 1
    

       jsr aslax      -or- jsr asrax  

    But I didn't inline the single-shift-code for the above reason.
  • Index-calculating for arrays is optimized to use shift