DM> No, it's a light pen to point on screen !!! It allows you to draw 
DM> directly onyour screen. That's why I said it's the same thing that a 
DM> Light Gun... It don't
DM> sends anything, it only receives the signal from the TV screen.
DM> One thing that make it's detection easier on the spectrum is that the 
DM> onlyinterrupt available is lanched at the start of the screen update 
DM> (just after
DM> the vertical retrace. On the spectrum, the screen update begins with 
DM> a fewlines of the same color (the border) so there is time available 
DM> to save the
DM> registers...) I think that IRQ9 should have a similar use on the PC 
DM> but thatit's not always the case. (old Trident have a jumper to 
DM> enable/disable IRQ9)
DM> That's all for now!
I thiought we were talking about the light pens that do barcode things.  We 
should take this to the Netmail. Going way off-topic, although it may be an 
Apogee game to come, the people who have
contributed messages have my many thanks and we should goto netmail to 
discuss further about this subject.
* SPITFIRE v3.51 
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