Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!think.com!mintaka!bloom-beacon!eru!hagbard!sunic!mcsun!cernvax!chx400!bernina!neptune!iiic.ethz.ch!mneerach
From: mneerach@iiic.ethz.ch (Matthias Ulrich Neeracher)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Using parameter blocks in ASM
Message-ID: <17573@neptune.inf.ethz.ch>
Date: 6 Dec 90 12:28:58 GMT
References: <0bLHodC00WBL42hVc=@andrew.cmu.edu>
Sender: news@neptune.inf.ethz.ch
Reply-To: mneerach@iiic.ethz.ch
Organization: Departement Informatik, ETH, Zurich
Lines: 22

In article <0bLHodC00WBL42hVc=@andrew.cmu.edu>, gd1a+@andrew.cmu.edu
(Glen M. Devries) writes:
> How does one set up a parameter block in assembly. I need a pointer to
> the block and then need to set up the contents. Where can it be? Must it
> be in the application heap or can it be in the system heap?

Both is possible, the block can even be on the stack (But beware of 
asynchronous calls which continue after the stack frame containing
the parameter block has been destroyed). 

You have to declare/allocate a nonrelocatable block the size of a 
ParamBlockRec. You should find this size already declared as a constant 
in some interface file. 

Hope this helps

Matthias

-----
Matthias Neeracher                                   mneerach@iiic.ethz.ch
   "These days, though, you have to be pretty technical before you can 
    even aspire to crudeness." -- William Gibson, _Johnny Mnemonic_