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- Newsgroups: comp.unix.sys5.r4
- Path: sparky!uunet!wupost!cs.utexas.edu!zaphod.mps.ohio-state.edu!menudo.uh.edu!sugar!ficc!peter
- From: peter@ferranti.com (peter da silva)
- Subject: Re: Can Sys/V force DTR low or high?
- Message-ID: <id.PS3W.BG9@ferranti.com>
- Keywords: DTR
- Organization: Xenix Support, FICC
- References: <1406@minya.UUCP> <16070@auspex-gw.auspex.com> <id.KS3W.U79@ferranti.com>
- Date: Thu, 24 Dec 1992 22:37:06 GMT
- Lines: 19
-
- In article <id.KS3W.U79@ferranti.com> peter@ferranti.com (peter da silva) writes:
- > Like Intel, which not only doesn't support any such ioctls, but it only
- > raises DTR on open [...]
-
- I have been reminded that I have this behavior backwards. You could raise DTR,
- but couldn't become a process group leader again even if you closed all file
- descriptors, did a "setpgrp()", and opened that port again. I don't know how
- they managed that but it was more than mildly annoying.
-
- In addition, if you set speed to B0 it would not then raise DTR again if you
- set speed back to some other baud rate. Since the SVID never explicitly says
- this, they didn't implement it.
-
- The end result, and the customer-hostile response, was the same.
- --
- Peter da Silva `-_-'
- Ferranti International Controls Corporation 'U`
- Sugar Land, TX 77487-5012 USA
- +1 713 274 5180 "Zure otsoa besarkatu al duzu gaur?"
-