Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!uwm.edu!gem.mps.ohio-state.edu!tut.cis.ohio-state.edu!pt.cs.cmu.edu!andrew.cmu.edu!mm3d+ From: mm3d+@andrew.cmu.edu (Matt McNally) Newsgroups: comp.sys.mac.programmer Subject: Re: I need a 'Break'...no really. Message-ID: Date: 25 Oct 89 15:56:30 GMT Organization: Computing Systems, Carnegie Mellon, Pittsburgh, PA Lines: 27 Many thanks for the replies. It turns out that I was correctly sending a 'Break' using the SerSetBrk and SerClrBrk functions, (which was the most common reply to my initial query), but that our hardware 'box' wasn't responding correctly. After re-reading IM-II when the initial commands seemed to fail I wasn't sure what Apple meant by 'break mode', but with your replies my 'case' for rechecking the hardware was much stronger. Again, many many thanks. As for some of your other suggestions, which included various methods for generating framing errors, although I didn't try any of them, I am once again amazed at the ingenuity of Macintosh programmers. It must be a result of trying program a machine with a 'floating' OS...:-). Matt McNally =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Matt McNally - 'Macintosh II Initiative' Research Programmer/Dugan Carnegie Mellon, H&SS Dean's Office, Pittsburgh, PA 15213 Office: Baker Hall 369-B, (412) 268-6990 ARPANET Address: mm3d@andrew.cmu.edu < No disclaimer! > =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=