All Forums  MCUmall Forums  True USB Willem Programmer (GQ-2X,3X,4X & GQ-4x4)  Write Error

Note: You must be registered in order to post a reply.
To register, click here. Registration is FREE!

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 vulcan1[/i] [br]I have (what appears to be) a blank TI TMS27C512 EPROM. If I fill the buffer with FF or 00, the GQ-2X Re-1 programmer has all 3 LEDs come on and appears to write/verify to the chip fine. A read of the buffer shows all zeros regardless. A Blank check shows errors at buffer 3, but the buffer read shows all zeros. If I load the buffer with data and try to write to the chip, I get the message (obviously an error in that as well): Wriete Error Device write failed at address: 0x000001, Buffer=0x03 Device=0x00 I have tried writing at all speeds, disabling the verify button (which does not seem to stop the checksum of the write routine), and now I am wondering if I have either a defective chip or a defective Willem USB programmer. I don't have a second chip to test with, but since I did somehow get the original data erased from this chip by writing all zeros with the programmer, I suspect the board. [b]Image Insert:[/b][br][img]http://www.mcumall.com/forum/uploaded/vulcan1/20067269810_WillemUSB.jpg[/img][br][size=1] 86.26 KB[/size=1] [/quote]    Insert an Image File Check here to include your profile signature.