Not sure how many here use the old WICO pattern generators but I have modified mine so it has both +/- Hor & Vert. sync and +/- composite sync as well as pushed it up to EGA speed with a second crystal. As a result I can test most of the B&W and colour game monitors with this - up to VGA. If you have one of these units and want to kludge it up you are welcome to use my nasty hand-drawn schematic for a guide. ftp://ftp.flippers.com/TTL/TestEquipment/WICO/Colour&BW/ (grab the PDF there). John :-#)# _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist FTP site is: ftp://ftp.flippers.com/TTL/TestEquipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/