I have a 320x240 glcd with an epson s1d13700 display controller that is=20 paired with a 18lf45k200 chip. The problem I am having is that whatever=20 I display graphically only shows every 7/8th pixel. If I draw pixels=20 using a loop in the code to draw from 0,0 to 0,240 and increment that to=20 1,0 to 1,240 so that it forms lines on the display ,the lines are drawn=20 properly but the only lines on the display are every 8th row. I can see=20 the lines being drawn on the display but it looks like they are being=20 erased as soon as they are drawn , except for every 8th row. I tried different libraries, so far it does the same thing whether I use=20 swordfish basic, CCS, or Microchip c18. This was using sample code I=20 found on the net and not code I wrote myself so I can't see how code can=20 be the problem. More what I am focusing on is the 18LF45k22 chip is running off a 3V=20 supply and the display is running off 5.0V supply. I'm wondering if=20 there might be some problems with logic levels or maybe it is a timing=20 issue with this specific pic chip. I 'm doubtful on the logic levels=20 because the commands are clearly getting through to the display because=20 it can display text and draws the lines, they just don't seem to remain=20 on the display. Thanks Mark --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .