All Forums  MCUmall Forums  True USB Willem Programmer (GQ-2X,3X,4X & GQ-4x4)  Problems with 64K EPROMS

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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 ChrisM[/i] [br]I have a new GQ-4x4 and have successfully programmed several 32K EPROMS, however there seems to be an issue when I try to program 64K ones. I have tried with AM2764 chips from MD and D2764 chips from Intel. If I do a blank check they come back as blank, but then again it comes back as blank even when there is nothing in the ZIF socket, so that doesn't really prove anything. Doing a read returns all FF and if I change the first FF to 00 and do a burn it fails on the first character saying it wrote 00 but read FF. Any ideas here as to if the unit is faulty or is a software issue. Here is the log ID check skipped Blank checking... Buffer Elapsed time: 1.48 seconds. Chip is blank ID check skipped Reading... Buffer Elapsed time: 1.50 seconds. Read completed. ID check skipped Writing... Buffer Elapsed time: 0.96 seconds. ID check skipped Writing... Buffer Elapsed time: 0.96 seconds. Write failed, Address=0x000000, Buffer=0x00 Device=0xFF Write failed Thanks Chris [/quote]    Insert an Image File Check here to include your profile signature.