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From: tmoran@bix.com (Tom Moran)
Subject: Re: low-level
Date: 1998/04/13
Message-ID: <353239e5.189990@SantaClara01.news.InterNex.Net>#1/1
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References: <01bd66bc$73c7ca40$beda4cc3@carlos>
Organization: InterNex Information Services 1-800-595-3333
Newsgroups: comp.lang.ada
Date: 1998-04-13T00:00:00+00:00
List-Id: <comp.lang.ada>


Just as in C you can use vendor supplied library routines like int86,
you can do the same in Ada.  Look at your compiler vendor's
documentation to find out what appropriate library routines they
supply.  
  In Ada you can use a "representation clause" (see RM chapter 13)  to
force certain things to be at certain addresses.  Note that many
modern OS's "virtualize" things so the address you get may not be the
same as the address the hardware sees, and you may have to find the OS
functions that will let you get at particular *hardware* or physical
addresses.