Summary: a check list for porting code from 16F84 to 12C508/12C509. John Mullan wrote: > If I develop the code on a 16C84 ... should the code work if > compiled for the 12C508? I too had that sort of question, back in July last year. I compiled a checklist and sought input from the PIClist community, and it was greatly improved as a result. It is attached. It is specific to the 12C509 rather than 12C508, but it should help. I found it very practical to prototype with the 16F84 and then move the code to 12C509. Seven out of eight projects worked fine. Eleven months ago, however, I stumbled badly and could not get my DS1820 interface code to work. I may be missing something in the checklist. Perhaps I should HTMLise this checklist and place it on a web page? -- James Cameron mailto:quozl@us.netrek.org http://quozl.us.netrek.org/ Attachment converted: wonderland:porting.txt (TEXT/CSOm) (000116C7)