Date: Sunday, 8 June 1986  00:24-MDT
From: brad%looking.UUCP at seismo.CSS.GOV (Brad Templeton)
Re:   Turbo Cursor Off/On

IBM-PCs have an official way to deal with screen functions.  (This has
*nothing* to do with MS-DOS, by the way).  These routines aren't
perfect, but there is little excuse for not using them unless you want
something that they can't do.

Turbo Pascal & compatible systems have a built-in routine called
"intr" that makes interfacing to these routines easy. Most C compilers
have a similar routine.

INT 10, function 15 (ah register) gets you the screen mode.  7 is
monochrome adapter, anything less is colour adapter or compatible,
more is EGA or other card. Function 8 is cursor addressing.  Put -1 in
dx and the cursor goes away.

(I will admit that the above -1 is not documented, but it's still
better than poking around in the BIOS ram!)
-- 
Brad Templeton, Looking Glass Software Ltd. - Waterloo, Ontario 519/884-7473