Date   : Wed, 26 Oct 2005 10:32:16 +0100 (BST)
From   : Tom Walker <tommowalker@...>
Subject: Re: Light pens.

> My question is, knowing roughly how the pen works,
> is there a way of 
> being "notified" (e.g. IRQ) when the CRTC has
> latched a pen position, or 
> is it simply a case of polling the CRTC like mad
> until a flag is set?

Bit 3 of the System VIA IFR according to the AUG.

Tom


       
       
               
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