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- From: smckinty@sunicnc.France.Sun.COM (Steve McKinty - Sun ICNC)
- Newsgroups: comp.protocols.ppp
- Subject: Re: sun serial >38400
- Message-ID: <1igu0rINNsvt@grapevine.EBay.Sun.COM>
- Date: 7 Jan 93 09:43:55 GMT
- References: <1992Dec31.162852.2315@hugis.nbg.sub.org> <searsk-030193070145@3.7.192.190> <1993Jan6.213927.2788@ukw.uucp>
- Sender: smckinty@France.Sun.COM (Steve McKinty - Sun ICNC)
- Organization: SunConnect
- Lines: 25
- NNTP-Posting-Host: hardy.france.sun.com
-
- In article <1993Jan6.213927.2788@ukw.uucp>, lupe@ukw.uucp (Lupe Christoph) writes:
- > searsk@med.ge.com (Kevin D. Sears) writes:
- >
- > >In article <1992Dec31.162852.2315@hugis.nbg.sub.org>,
- > >hugibaz@hugis.nbg.sub.org (Ingo Kraupa) wrote:
- > >>
- > >> A few months ago someone posted that there is a patch to get higher bps-rates
- > >> than 38.4kbps on a sun sparcstation. I told this to a friend, and he asked
- > >> me if I can get this patch for him. I forgot the person, but I'm sure he
- > >> posted to this group. Any hint would be very appreciated.
- > >>
-
-
- Please note that I am not speaking for Sun, when it comes to the serial
- device driver I'm just a user.
-
- Bear in mind that the 8530 in a SPARCstation is a character-interrupt
- device. Every received character causes a CPU interrupt and the processor
- must read the chip registers, store the value in memory, etc. Asking it
- to do that at >38.4 is asking a lot, especially for an SS1 or 1+. I have
- seen SS2s running at 64k, but you can expect that to be quite a load
- on the system. If the machine is heavily loaded you may lose characters.
-
-
- Steve
-