From: "abacuc" <f DOT onorati AT tiscalinet DOT it>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: cursor
Date: Sat, 11 Nov 2000 01:40:27 +0100
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To: djgpp AT delorie DOT com
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> It basically had a text mode only display, but used a RAM, not a ROM,
> for a character generator.  You can do something similar with all PC
> displays with EGA or greater capability.
>
> When you move the cursor onto some position of the display, build a
> character pixel map consisting of the character with your vertical
> line merged in, and set an unused character value (perhaps 255, which
> is a blank) to use this bit map.
>
> Hook the timer and on every fourth timer alternate between the actual
> char value and the modified char value (i.e., 255), to get about a 2.5
> Hz blink rate.
>
> Of course you have to have coordination with your foreground display
> routines.  They must set a flag to tell the timer routine to stop
> working during display updates, and put back the original character,
> and so on.

Do u know where can i find more information about this?

Abacuc