Am using WinPic programmer.It is software for programing PIC microcontrolers over Michrochip AN589 hardware. It works fine on my home PC but in office where PCs are controled ower the net from PC administrators it wont work. On the old PC with Windows 2000 I have resolved problem with:
But on newer PC with XP it does not help.
So how can i resolve problem describet in text below (strong text):
Programming fails, and WinPic says "WARNING: Windows fooled around with the LPT port bits". What does that mean ?
This message means, that -for some strange reason- windows has reprogrammed one of the control registers of the serious ports. WinPic checks from time to time, if a value it has written into a certain register is still in there. If the register value seems to have changed by mysterious ways, it shows the warning mentioned above. The reason is usually some kind of driver which lurks in the background (of the windows driver system), and watches the parallel port. If "something" happens on the port, it tries to talk to a printer, a scanner, or whatever is usually connected to that port. So what to do:
make sure no printer driver, or scanner driver, etc, has occupied this port (though WinPic usually works even though a printer driver occupies the port !). I got a report from a user of Windows 2003 that on his system, the culprit was a scanner driver, and after shutting that thing down the strange error messages from WinPic disappeared.