All Forums  MCUmall Forums  True USB Willem Programmer (GQ-2X,3X,4X & GQ-4x4)  Help with 87c257

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Screensize: 640 x 480 800 x 600 1024 x 768 1280 x 1024 UserName: Password: Format Mode: Basic  Help  Prompt  Format: Font Andale Mono Arial Arial Black Book Antiqua Century Gothic Comic Sans MS Courier New Georgia Impact Lucida Console Script MT Bold Stencil Tahoma Times New Roman Trebuchet MS Verdana   Size 1 2 3 4 5 6   Color Black Red Yellow Pink Green Orange Purple Blue Beige Brown Teal Navy Maroon LimeGreen Message: * HTML is OFF * Forum Code is ON Smilies [quote][i]Originally posted by Kutche.net[/i] [br]I need help desperately. I am trying to copy and burn SUCCESSIVELY ST M87C257's They appear to read ok, and write and verify the new chips.. Yet the new chips do not work only the original.. What am I doing wrong or did I waste $100. I see a lot of other posts about problems with 87c257's I bought and expected this to work based on the comparability list. I wanted something that would work when I needed not after spending days trying to get help... Now I am out of time and need your help... I have 36 hours to complete this task. Thanks javascript:insertsmilie('[8]') [8][8][8][8][8] [/quote]    Insert an Image File Check here to include your profile signature.