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From: bryce@COGSCI.BERKELEY.EDU (Bryce Nesbitt)
Newsgroups: comp.sys.amiga
Subject: Re: Re: Astartup.obj
Message-ID: <8707291127.AA05266@cogsci.berkeley.edu>
Date: Wed, 29-Jul-87 07:27:45 EDT
Article-I.D.: cogsci.8707291127.AA05266
Posted: Wed Jul 29 07:27:45 1987
Date-Received: Fri, 31-Jul-87 02:25:47 EDT
References: <8707251238.AA03602@cogsci.berkeley.edu>
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: Institute of Cognitive Studies, UC Berkeley
Lines: 46

In article <> scotty@l5comp.UUCP (Scott Turner) typed:
In article <> bryce@COGSCI.BERKELEY.EDU (Bryce Nesbitt) writes:
>
>> [Astartup.obj is buggy]
>> Did I miss an upgrade?  Or did everyone switch to Aztec? :-)
>
> How about option 3?  Tossed the C compiler and went straight to assembly? :)

Of course you realize that this is what I do.  I consider 68000 my primary
working language.  However, survey SAYS... most people switched to Aztec.


> As for the parameters being passed from workbench. How many programs have you
> ever seen that ran from the workbench and insisted on having piles of order
> dependent parameters fed to them?

You missed the point.  By about three hundred kilobytes.

Astartup.obj passes two things to _main, argc and argv.  From the CLI argc
is always at least 1, and counts the number of typed paramters.  argv is a
"vector" (pointer) to the array of pointers that contains the args.  argv[0]
is the program name, argv[1] is the first paramter, etc.
When started from Workbench argc will be set to be 0, and argv will be the
pointer to the Workbench message.  The old Astartup.obj pushed those two on
the stack in the WRONG order.
Any C program that uses the Workbench message or wants to know if it was
started from the CLI or Workbench needs a "pile" of those two parameters,
preferrably in the proper order.

TRIVA: The ReportMouse() function also screws up the order of it's own
parameters.  This was not fixed in V1.2 because people got it to work by
switching the order of the parameters.  Aztec went as far as doing this for
you.  For us 68000 programmers the boolean must be passed in A0, and the pointer
in D0.  (or just EOR the proper bit in one instruction, and forget
ReportMouse().)

BTW: I am told that there was an update to Astartup.obj posted the net.  I
never saw this, and could not find it at the j.cc.purdue.EDU archives.
It matters little since I re-wrote it anyway...

-----------------------------
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