All Forums  MCUmall Forums  True USB Willem Programmer (GQ-2X,3X,4X & GQ-4x4)  GQ-4X 27C322 (ADP-054) Read/Write Problems

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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 johker[/i] [br]I recently tried to write a 27C322 chip, but failed with the following error: "Write failed, Address=0x003000, Buffer=0xFF Device=0xDF" Sometimes, it already fails at address 0x000001 and progress never gets further than 0%. When trying to read the EPROM, the progress bar stops at 100% for an indefinite amount of time. I use the following settings with the ADP-054 adapter: J1: jumper set to 2+3 (27C322) J2: not used J5: tried both settings, V3 and V4 When doing a blank check, it always fails, but I'm very sure that the chip is blank. After all I left it in the eraser for multiple hours. I've tried with about 15 27C322 EPROMs, but all failed. With my old parallel port Willem programmer from sivava I never got that problem. It burned the chips just fine. I'd like to be able to program 27C322 EPROMs with my GQ-4X. Your help is greatly appreciated. [/quote]    Insert an Image File Check here to include your profile signature.