Path: utzoo!attcan!uunet!decwrl!sdd.hp.com!zaphod.mps.ohio-state.edu!usc!snorkelwacker!mit-eddie!uw-beaver!zephyr.ens.tek.com!vice!kurtk From: kurtk@vice.ICO.TEK.COM (Kurt Krueger) Newsgroups: comp.lang.c Subject: Re: Help! Reading SUN keyboard chars in SUN FORTRAN Message-ID: <5467@vice.ICO.TEK.COM> Date: 1 Aug 90 15:51:22 GMT Organization: Tektronix, Inc., Beaverton, OR. Lines: 41 In-Reply-To: <2586.26b69527@csc.anu.oz> In article <2586.26b69527@csc.anu.oz> you write: My program reads the coordinates from a Tektronix 4010 crosshairs (GIN mode) without echoing the cryptic Tektronix 4010 codes back to the graphics terminal. I presume that the 'graphics terminal' is indeed the Tek terminal. If it's a 4010, there should be a strap on one of the boards that sets what is called 'bypass cancel'. The terminal itself supresses echo from the host, after GIN, until it receives a specific, selectable, character. This is called 'bypass' mode. Usually this character is a CR or a LF. If you have a newer terminal (41xx, 42xx, etc), there will be a setup mode command to set this character. You can use ANY ascii character. BYPASSCANCEL 10 sets LF. If the character is NULL, you have no bypass cancel and thus the terminal WON'T even go into bypass mode (since if it did, it would never come out ... clever, those engineers!). That might be your problem, that you are not entering bypass mode. Your other bet it to communicate with Unix and issue the equivalent of stty -echo We've survived very well for umpteen years with the bypass mode feature. Sorry I can't tell you which board has the straps, I haven't used a real 4010 for quite a few years now. If it's something newer, like a 4014, I might be able to find one around here. Or even a manual for it. ________________________________________________________________________________ | kurtk@vice.ICO.TEK.COM (Kurt Krueger) | Everything runs on smoke. When the Electrical Simulation Group | smoke leaks out, it stops working. D.S. 59-432 (503) 627-4363 | ________________________________________|_______________________________________