Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!cs.utexas.edu!wuarchive!swbatl!ammrk
From: ammrk@swbatl.sbc.com (Mike R. Kraml)
Newsgroups: comp.sys.amiga
Subject: Re: Difficulty in programming
Message-ID: <1535@swbatl.sbc.com>
Date: 3 Jun 90 07:35:32 GMT
References: <2487@zipeecs.umich.edu> <1990Jun2.063414.10292@agate.berkeley.edu> <136558@sun.Eng.Sun.COM>
Reply-To: ammrk@swbatl.UUCP (Mike R. Kraml)
Organization: Southwestern Bell Tele. Co. - Advanced Technology Lab - St. Louis
Lines: 52

In article <136558@sun.Eng.Sun.COM> cmcmanis@stpeter.Eng.Sun.COM (Chuck McManis) writes:
>In article <1990Jun2.063414.10292@agate.berkeley.edu> laba-1ei@e260-2f (Joseph Chung) writes:
>>Try this one on for size:
>>
>>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?
>
>Well, how about :
>	win = fopen("CON:640/200/0/0","w+");
>	fprintf(fp,"\e[%d;%dH%s",y,x,"X");
>
>Prints the character X at x, y.
>
>Of course in your rather rude IBM example you just bang on the hardware,
>the equivalently rude thing on the Amiga is :
>	IntuitionBase = OpenLibrary("intuition.library",0L);
>	GfxBase = OpenLibrary("graphics.library",0L);
>	rp = &(IntuitionBase->FirstScreen->RastPort);
>	Move(rp, x, y);
>	Text(rp, "X", 1);
>
>Of course this screws up the display, just like the IBM example given
>does. The only difference between this and making it nice is getting
>your own rastport which means opening your own window which is really
>trivial in AmigaBASIC and in C it is also pretty trivial. 
>
>My final comment on all this silliness is wait until you get a real job
>and someone asks you to put characters on an "X11" window. Hooboy,
>that may be too difficult for you. This is one of the reason why 
>"years and years" of experience programming the IBM PC just doesn't
>cut it in my book.

Yes... I had to Reprint all of this wonderfull Followup!  Excellent reply
Chuck, you took the words right out of my mouth!!!!!! 

>--
>--Chuck McManis						    Sun Microsystems
>uucp: {anywhere}!sun!cmcmanis   BIX: <none>   Internet: cmcmanis@Eng.Sun.COM
>These opinions are my own and no one elses, but you knew that didn't you.
>"I tell you this parrot is bleeding deceased!"


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  Mike Kraml - Manager-Separations MECHANIZATION - SWBT - (The Techies)
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