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

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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 NaughtyZeut[/i] [br]I am using the GQ-4X programmer with ADP-054 adapter to write 27C160 and 27C4096 devices. I have yet to successfully write a single one of these device types. Both fail at nearly the same address. The 27C160 fails at 0x040002 and the 27C4096 at 0x040001. This leads me to believe there could be an issue with the connection to address pin A18 on the device. Read backs of known good chips works fine though. I have tried this with multiple different 27C160 and 27C4096 EPROMs. I have a hard time believing that 10 different EPROMs would be bad at the same address. I have attempted to contact customer support via the support@mcumall.com and support@gqelectronicsllc.com email addresses with no success. Any assistance is appreciated. I purchased this programmer primarily for these devices, so if it isn't going to work, I'd like to return it or resell it to someone that can use it for other devices. Thanks in advance. [/quote]    Insert an Image File Check here to include your profile signature.