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From: navas@cory.Berkeley.EDU (David C. Navas)
Newsgroups: comp.sys.amiga
Subject: Re: Difficulty in programming
Message-ID: <25393@pasteur.Berkeley.EDU>
Date: 2 Jun 90 18:26:25 GMT
References: <2487@zipeecs.umich.edu> <1990Jun2.063414.10292@agate.berkeley.edu>
Sender: news@pasteur.Berkeley.EDU
Reply-To: navas@cory.Berkeley.EDU.UUCP (David C. Navas)
Organization: University of California, Berkeley
Lines: 38

In article <1990Jun2.063414.10292@agate.berkeley.edu> laba-1ei@e260-2f (Joseph Chung) writes:
>In an IBM (no flames please!), if I want to put a character anywhere on the
>screen, I just
>1. load a segment register with the segment of the screen.
>2. write the proper byte to the screen location (using a simple offset) (In
>short, is a basic POKE command!)
>How would you accomplish this in an Amiga?
>1. Create my own screen, or should it be my window (damn, where did I put
>    my copy of NewWindow struct ...)
>The above is just one very tiny example.  In short, I would like you to show
>me how programming a multitasking system can be *easier* than programming a
>monotasking one.

Now, now, Joe -- it's not all that bad.

Try using -- Write(Output(), "Hello World", 11)  [I hope I have that in the
						correct order]

On an IBM, you have to:  make sure if you have an appropriate graphics card,
load the *correct* segment register and load the *proper* byte.  Which can
end up being just a wee bit more complicated than a 'simple' poke.

In fact, in my experience (which is about to become painfully broader)
accessing any memory in a PC is a pain in the butt.  But that's a tangent...

Now, of course if you wanted to *draw* a character into the *graphics*
screen, lessee, you need to...  [you get the picture, right?]

It's clear you've never seen how the Mac applications have to talk to *their*
interface.  Darn good thing they had a toolbox!!

>Joseph Chung
>== You can always find what you're not looking for! ==
>laba-1ei@web.berkeley.edu


David Navas                                   navas@cory.berkeley.edu
"Excuse my ignorance, but I've been run over by my train of thought."  -me