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From: hawk@pnet01.cts.com (John Anderson)
Newsgroups: comp.sys.amiga.programmer
Subject: Mouse blanking
Message-ID: <9107@crash.cts.com>
Date: 7 May 91 04:16:03 GMT
Sender: root@crash.cts.com
Organization: People-Net [pnet01], El Cajon CA
Lines: 14

>DMouse's only gotcha had to do with mouse blanking.  I went direct to  
>the copper list on earlier versions of DMouse and this broke under 2.0 
>(admittedly, I was doing something entirely illegal).  By the time 2.0 
>had come out I had already stuck a check in the code to not attempt to 
>blank the mouse if the copper list was not as expected.  After some    
>discussion somebody came up with the bright idea, and I kick myself for
>not thinking of it, of simply turning off sprite DMA to blank the      
>mouse.  Entirely compatible and documented.  Works great! And if it    
>ever breaks in the future you simply turn off that particular feature. 
                                                                        
Turning off sprite DMA to blank the mouse pointer may be good for some  
things but the people who wrote the few pointer blankers for 2.0        
also turned off the cursor for JRComm (which is a sprite). So when      
the mouse pinter blanks so does the darn cursor!!!