Path: utzoo!mnetor!tmsoft!torsqnt!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!van-bc!rsoft!mindlink!a976
From: a976@mindlink.UUCP (Ron Tarrant)
Newsgroups: comp.sys.amiga.tech
Subject: Re: Pointer Initialization
Message-ID: <4241@mindlink.UUCP>
Date: 25 Dec 90 22:05:01 GMT
Organization: MIND LINK! - British Columbia, Canada
Lines: 33

> kzyx@vax5.cit.cornell.edu writes:
> 
> Msg-ID: <1990Dec24.152533.1770@vax5.cit.cornell.edu>
> Posted: 24 Dec 90 19:25:33 GMT
> 
> 
>        Hello there,
> 
>        What is the correct way to initialize a structure pointer to access
> the hardware under ANSI (Aztec C 5.0d)
> 
>        Edval


It's not a good idea to access the hardware directly. It means you have to
update your code every time there is system software and makes it harder (if
I'm not mistaken) to go from one Amiga model to another.

> kzyx@vax5.cit.cornell.edu writes:
> 
>                struct myblitterstruct *myblitterpointer;
> 


This initializes your structure pointer. If you already have a structure of
this type defined, that is. If you also have an actual
structure of this type declared, then make your pointer point to it like this:

        myblitterstruct = &OriginalBlitterStruct

But when you point your pointer at something in the hardware you're asking for
trouble. In fact, I'm not sure it can even be done.
-Ron