Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 (Tek) 9/28/84 based on 9/17/84; site motel6.UUCP Path: utzoo!watmath!clyde!bonnie!akgua!whuxlm!harpo!decvax!tektronix!reed!motel6!keith From: keith@motel6.UUCP (Keith Packard) Newsgroups: net.games.rogue Subject: Re: problem with rogue7 strings Message-ID: <175@motel6.UUCP> Date: Sun, 30-Jun-85 18:04:42 EDT Article-I.D.: motel6.175 Posted: Sun Jun 30 18:04:42 1985 Date-Received: Fri, 5-Jul-85 02:38:44 EDT References: <174@motel6.UUCP> Distribution: net Organization: 5440 SE 41st, Portland, OR Lines: 52 > I have a set of rogue7 sources (the one with multiple character classes) > that do run fine on the vax. But, when I ported them to a > Sequent Balance-8000 machine (32016), I got strange > errors in the messages printed at the top of the screen. For example, > I am fighting a bat: > > You miss the bat --More-- > > When I hit space, the message changes to: > > Tou miss the bat --More-- > > Yes, this is correct. I check the sources and find that it > *really* wanted to print: > > The bat misses you. > > but only the first character was printed correctly. > > keith packard > ...!tektronix!reed!motel6!keith Well, I found the problem, when I unset the "flush typeahead" flag everything worked correctly! It turns out that, on my 11/73 and obviously on the Balance calling ioctl: ioctl (foo, TIOCFLUSH, 0) causes *both* input and *output* to be flushed, and of course I was only seeing this problem when I was in battle - flush was being called all the time. So, looking at my kernel sources (Praise Unix for Sourced Systems) I found out that if you call ioctl: # includeint flags = FREAD; ioctl (foo, TIOCFLUSH, &flags) then only the input queue is flushed! I wish things like this made it into the documentation. (grr) Oh, you can use FWRITE in the ioctl call as well. So, I made an enormous hack and did: # define flushout() ioctl (_tty_ch, TCFLSH, "\001\000\000\000") in rogue.h (well actually "\001\000" as I was fixing the 11/73 version...) I know, ugly but it was quick. I'll fix it later... (sure) Keith Packard ...!tektronix!motel6!keith