Path: utzoo!attcan!uunet!ginosko!gem.mps.ohio-state.edu!tut.cis.ohio-state.edu!triceratops.cis.ohio-state.edu!karl From: karl@triceratops.cis.ohio-state.edu (Karl Kleinpaste) Newsgroups: comp.sys.ibm.pc.rt Subject: Re: Slip for RT? Message-ID:Date: 27 Sep 89 15:23:23 GMT References: <684@cwjcc.CWRU.Edu> Sender: news@tut.cis.ohio-state.edu Organization: OSU Lines: 22 In-reply-to: chet@cwns1.ins.cwru.edu's message of 26 Sep 89 15:15:15 GMT chet@cwns1.ins.cwru.edu writes: Has anyone successfully run slip on an RT (preferably running AOS, but AIX info is welcome as well)? Anything to look out for? I'm looking for any kind of info I can get. I'm running SLIP on RTs running Mach 2.5. I'm told that the AOS drivers are (largely?) what's in Mach. I discovered a fencepost error in the latest SLIP driver, what amounts to an off-by-1 error in slinput() because it checks for noisy line packet overrun via (count >= SLMTU) rather than (count > SLMTU). A new Mach kernel with the 4.3-tahoe SLIP driver is working fine so far, but I have to do some more testing before I'm fully convinced. The async port driver on this system is deeply braindamaged. I get error messages on the console such as "asy0: overrun error" and "slih6: undefined bit(s) in softlevel: 4" down to speeds as low as 1200bps. The fact that the system wastes time chattering these messages onto the console makes the problem worse. I've done a rude thing with Emacs to put a ^@ at the beginning of these messages, so I don't see them any more. --Karl