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                  Copyright (C) 1990 by Nat�rlich!
                     This file is copyrighted!
               Refer to the documentation for details.
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   NASM65 --- a Atari 8-Bit Crossassembler for the Atari ST (et al.)


                        Preliminary manual for NASM65 libraries

         Copyright ½ 1990 by Nat�rlich!
            on sources, binaries and manuals


                  ¯¯ Bang that Bit that doesn't Bang ®®


   I n t r o d u c t i o n

   The NASM65 system contains an at best rudimentary library of code, to
   be linked to your programs. The style in which these libraries are
   accessed is uniform and will be explained in this document. Refer also
   to the NLIB65, NLINK65 and STDIO documentation.


   A c c e s s i n g   N A S M 6 5   l i b r a r i e s

   Libraries are accessed by the user in a uniform way, very much akin to
   C. The user includes a header file, like for example STDIO.H65. This
   files contains setup/call macros for functions that reside in libraries.

   The macros should be written in a generic sort of way, as exemplified
   in STDIO.H65. The point being that you can use the .MACROs in two ways

   Case 1:
         .include #system
         .include #stddef
         .include #macros
         .include #stdio

         ...

         OPEN     2,8,0,file
         PRINT    2,text,textend-text
         CLOSE    2

         ...

    file:
         .byte "D:FOOBLE.BAR",0
    text:
         .byte "Hello World",155,0
    textend:

    Case 2:
         .include #system
         .include #stddef
         .include #macros
         .include #stdio

         ...

         OPEN     channel,mode,0,filename,@p3
         PRINT    channel,text,textlen,0
         CLOSE    channel,@special

         ...

   channel: .ds      1
   mode:    .byte    8
   text:    .ds      128
   textlen: .byte    128

   In the first case, the macro is given values, whereas in the second
   case the macro is given addresses. With the help of an auxiliary
   parameter the user selects, which of the parameters are to be treated
   as adresses and which as values. (Default: No parameter -> all values,
   Parameter=0 -> all adresses)

   (Convention : parameter does not exist, all values are poked,
   parameter does exist : 0 = all values are addresses
   
   Libraries should always be called with a JSR from the outside not
   with a branch or JMP!!
   
   
   *** NOTE ***
   
   The setup macros are just for quick and dirty hacks, where you don't
   care about wasting some bytes for the sake of coding the stuff in
   maybe 10% of the time it would normally take you. If your writing
   something "for real" I'd suggest skipping the MACROS and calling
   the library directly.