All Forums  MCUmall Forums  True USB Willem Programmer (GQ-2X,3X,4X & GQ-4x4)  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 tdi7777[/i] [br]Hello , I'm trying to write on an 87c257 but it's not working. "write failure, address = 0X000002, Buffer=02" a priori the addresses are locked . data 87c257 = The 87C257 incorporates latches on all address inputs to minimize chip count, reduce cost, and simplify design of multiplexed bus systems. Is there a way to write? GQ-4X4 I tried to copy several 87c257 eproms without success. Thank you for your help. [/quote]    Insert an Image File Check here to include your profile signature.