info-vax@ucbvax.ARPA (03/19/85)
From: Rudy.Nedved@CMU-CS-A.ARPA Apparently if you have PASSALL on a HOSTSYNC on. You get control-S and control-Q sent out. Fine. I have PASSALL on and HOSTSYNC off. VMS 3.6 seems to be sending out a character and the documentation hints that it is sending a control-G. Is there some way to disable this control-G? I am trying to get a raw data stream...I have PASSALL,NOECHO,NOBRDCAST set and all other bits off on a DZ-11 line. Thanks, -Rudy
info-vax@ucbvax.ARPA (03/19/85)
From: Richard Garland <OC.GARLAND@CU20B.ARPA> Rudy: What you are gtting is input buffer overflow. There are several sysgen params (think TTY_ALARM or some such) which determine at what point the VAX gets upset when data is comming in. Assuming the typeahead buffer is 96 characters, the "alarm" might be set at 64 (default may be less). Then one of 2 things happens: If /HOSTSYNCH is on, VAX sends XOFF. If not, it sends a BEL. The idea is, the guy at the terminal stops typing when he hears the noise. For a smart terminal like a VT100 with HOSTSYNCH set, the XOFF will disable the keyboard. Fix may be to use a large alternate typeahead buffer, fuss with the alarm point, etc, etc. Rg -------