Thanks, Wirt -- lemme elaborate a tad: We have this thing (a Hitachi 704 "Chemical Analyzer" for anyone who know about 'em) working on a 969 running MPE/iX 5.5, and are now trying to test it on a 918(6.5) prior to upgrading. Accoring to Those Who Know, the instrument requires ENQ/ACK, and when we migrated from a 948(4.5) to the 969(5.5) we (apparently) had to write a little TTUTIL file to make it happy. Looking at that same file, I see that it looks like it was just set up to not expect or send anything (NULLs expectation/xmit) so maybe this was the way around the handshaking issue. So now we're trying to figure out what why it doesn't work on 6.5 with precisely the same terminal set-up and DTC configs. The mention of ENQ/ACK came up again, and now after further investigation, I'm scratching my head and mumbling. (Common occurrence, of course, just more pointless in this particular case.) Suggestions? Anybody? Thanks, Curtis >>> <[log in to unmask]> 10/02/2001 10:23:06 AM >>> Curtis, > http://docs.hp.com appears to be belly-up -- can anyone tell me where I > can specify ENQ/ACK on a connection type? I've got a sperially-conncted > instrument that requires such, so I'm looking in TTUTIL, but I only see > a "Uses XON/XOFF (Y/N)" kind o' thing, which may or may not work, > depending upon what flow control is assumed if you say "No". I'm nearly 100% sure that the ENQ/ACK protocol went away with the arrival of the first RISC machines and simply doesn't exist any longer. Wirt Atmar ----------------------------------------------------- Confidentiality Notice: This e-mail transmission may contain confidential or legally privileged information that is intended only for the individual or entity named in the e-mail address. If you are not the intended recipient, you are hereby notified that any disclosure, copying, distribution, or reliance upon the contents of this e-mail is strictly prohibited. If you have received this e-mail transmission in error, please reply to the sender, so that we can arrange for proper delivery, and then please delete the message from your inbox. Thank you. * To join/leave the list, search archives, change list settings, * * etc., please visit http://raven.utc.edu/archives/hp3000-l.html *