On Tue, Oct 12, 2004 at 02:57:54PM -0400, John J. McDonough wrote: > ----- Original Message ----- > From: "Byron A Jeff" > Subject: Re: [PIC] Programm pic16f628a > > > > Silly question: Can you bit fiddle the handshake lines on a USB to serial > > cable? > > It seems like you can muck with RTS/CTS/DTR on most. The problem with PIC > programmers is that they need 3 lines out and one in, so they tend to use TD > as an output, and the USB/Serial converter knows that bytes gotta come down > that line, with start and stop bits. Well that's not a problem, just use TD as a clock by sending either 0xff or 0x00 bytes down the pipe. Also can't you get like a megabit transmission rate over these USB cables? That's another advantage. If the bit twiddling and the TD transmission can be synced, then it's enough to do something useful. BAJ _______________________________________________ http://www.piclist.com View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist