On Wed, Mar 23, 2016 at 10:37 AM, Chris Elmquist <chr...@pobox.com> wrote:
> On Wednesday (03/23/2016 at 09:25AM -0500), Chris Elmquist wrote: > > On Wednesday (03/23/2016 at 02:03PM +0000), Cohen, Corey A wrote: > > > I'm trying to troubleshoot a TI silent 743/745. When you press the > "rubout" key should it print anything like an underscore? Besides sending > the rubout character, what does the actual print head do? Backup? Print an > underscore? > > > > I get nothing printed when pressing RUBOUT. > > > > With the unit in off-line mode and in half- or full-duplex, characters > > typed are printed. RUBOUT prints nothing. > > > > With the unit in on-line mode and half-duplex, chraracters typed are > > printed and RUBOUT prints nothing. In full-duplex, nothing prints unless > > the far end echos it back. > > I should have elaborated a little on what you might be seeing. > If something does print when you hit RUBOUT and you are on-line and in > half- or full-duplex, it is possible that the far end, whatever host > you are connected to, is echoing something back in response to the RUBOUT. > > The terminal sends ASCII 0x7F when you press RUBOUT. This is a > non-printing > character locally but the remote system can send back whatever it likes > in response to receiving that 0x7F. > > Chris > -- > Chris Elmquist > > What happens when you're in 20 mA mode? That's what it's for, not serial comms unless it's mapped specially. i.e. it's for emulating a teletype. right? -- @ BillDeg: Web: vintagecomputer.net Twitter: @billdeg <https://twitter.com/billdeg> Youtube: @billdeg <https://www.youtube.com/user/billdeg> Unauthorized Bio <http://www.vintagecomputer.net/readme.cfm>
