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From: jcw@cvl.UUCP (Jay C. Weber)
Newsgroups: net.micro.pc
Subject: Re: Cursor Positioning on IBM PC
Message-ID: <570@cvl.UUCP>
Date: Thu, 25-Aug-83 00:02:43 EDT
Article-I.D.: cvl.570
Posted: Thu Aug 25 00:02:43 1983
Date-Received: Fri, 26-Aug-83 06:59:10 EDT
References: <3278@npoiv.UUCP>
Organization: U. of Md. Computer Vision Lab
Lines: 17

The C language does not have any i/o features built into the 
language; i/o is totally handled by the library routines.  I have
seen at least one compiler advertized that comes with screen
manipulation routines, but I know that many don't.  I depends on
your C compiler.

However, if you are using DOS 2.0 and include the loading of the 
ANSI screen device driver in your CONFIG.SYS file, simple "prints"
(printf, puts, etc.) to the console can be used to position the
cursor.  See section 13 of the DOS 2.0 manual.

If you need to write a library routine from scratch, it will need
to perform INT 10 (video i/o in BIOS) with ah=3 to read the current 
cursor position and then with ah=2 to set it to the new position.
See pg A-43 in technical reference manual for more.

-Jay Weber {..!seismo!rlgvax!cvl!jcw}