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From: "Jerry van Dijk" <jvandyk@ibm.net>
Subject: Re: question re Ada equivalent of C function
Date: 1998/02/21
Message-ID: <01bd3f1d$44728800$582c5c8b@aptiva>#1/1
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References: <34EEFF9C.1D01FA5D@stellar1.com>
 <Pine.BSF.3.96.980221115827.17781A-100000@shell5.ba.best.com>
Organization: Ordina Finance
Newsgroups: comp.lang.ada
Date: 1998-02-21T00:00:00+00:00
List-Id: <comp.lang.ada>


> > What are the Ada equivalents of the C functions, inp and outp, used to
> > read a byte from or send one to a memory address?

> Mem_Addr : constant Address := To_Address(16#CAFEBABE#);
> Mem_Mapped_Char : Character;
> for Mem_Mapped_Char'Address use Mem_Addr;

Careful, that would depend on the processor. On a x86 the I/O ports
are not in the regular address space, that's why C compilers for PC's
often have a separate library functions to access them.

If the original question was indeed refering to a PC environment, then
the answer will depend on the specific compiler and OS used.

Jerry,