pic16f877 with 128x64 graphic LCD

[Zolyboy]

I made the connection between a pic mentioned in the title and a graphic lcd in proteus and tried to write a simple program in mikroC. When i use GLcd_Fill(0xFF) everything is ok, my LCD screen is totally black. If I use GLcd_Fill(0), as I read this is the clear screen, i got horizontal lanes on the LCD screen (first white, second black, third white, fourth black.....). Can somebody explain me pls why this happens? I would like only a clear screen not a partially filled one.

 

[tpetar]

Its problem in Proteus, try on real hardware.