AK>
  > I am currently writing programs in EMX C using the 16 bit
  > OS2 API calls documented in PRCP.INF.  Is there any way to
  > get the 32 bit documentation (for free, or a low price?).
AK>

  The OS/2 Online Book Collection CD-ROM comes with API documentation.

  When I bought mine, a couple of years ago, it cost roughly 35 quid :
  about the same price as the printed version of one of the books that it
  contained.

AK>
  >            I presume that to use the 16 bit API from ASM I
  > push the arguments on the stack and do a far call?
AK>

  The 16-bit OS/2 API is a set of far function calls that use the Pascal
  calling convention and Pascal name mangling.

  The import library for the 16-bit OS/2 API is either DOSCALLS.LIB or
  OS2286.LIB, depending from which toolkit you happen to have.

  I strongly suggest that if you are beginning OS/2 assembly language
  work, and you aren't doing IFS or device driver work, that you go
  straight to 32-bit.  If you learn 16-bit first, you'll have to unlearn a
  lot of things when you switch to 32-bit.  The API is subtly different,
  and the process architecture is obviously different.

  32-bit assemblers for OS/2 :

    Watcom's WASM, shipped with Watcom C++

    Borland's TASM, shipped with Borland C++

    Microsoft MASM 6.0 (small model with .386 enabled will fake flat model)

    IBM's ALP, shipped on the DevCon CD-ROMs

    GNU AS, a port of the FSF assembler (unconventional syntax)

  Tip :

    Don't buy MASM if you don't already have it, or code written for it.
    TASM with QUIRKS enabled will almost certainly be a lot easier to use.

  > JdeBP <
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