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- Path: sparky!uunet!mcsun!sun4nl!tuegate.tue.nl!viper!raymond
- From: raymond@es.ele.tue.nl (Raymond Nijssen)
- Newsgroups: comp.sys.hp
- Subject: Re: How to operate 750 serial ports at 57600 baud?
- Message-ID: <RAYMOND.92Jul29134258@anaconda.es.ele.tue.nl>
- Date: 29 Jul 92 11:42:58 GMT
- References: <RAYMOND.92Jul23153140@anaconda.es.ele.tue.nl> <28510298@hpuamsa.neth.hp.com>
- Sender: root@tuegate.tue.nl
- Organization: Eindhoven University of Technology, Eindhoven, The Netherlands
- Lines: 65
- In-reply-to: franks@hpuamsa.neth.hp.com's message of 27 Jul 92 11:50:22 GMT
-
- In article <28510298@hpuamsa.neth.hp.com> franks@hpuamsa.neth.hp.com (Frank Slootweg CRC) writes:
-
- > raymond@es.ele.tue.nl (Raymond Nijssen) writes:
-
- >> We're trying to connect a high-speed modem to our 9000/750.
- >>
- >> The modem is capable of running at 57600 baud, but the 750 (running 8.05)
- >> builtin ports seem to be capable of running at 57600 and up, but
- >> the software (stty, [uu]getty) seems to be limited to at most 38400 baud.
-
- > From termio(7) :
-
- >> DEPENDENCIES
- >[deleted]
- >> Series 700
- >> Built-in serial ports on the Series 700 machines support the
- >> following additional baud rate settings: 57600, 115200, 230400,
- >> and 460800 baud. An RS-232-to-RS-422 converter may be required
- >> to achieve actual throughput at these baud rates (because RS-232
- >> only specifies up to 19200 baud).
-
- This made us believe that these ports could run at 57600 bps (ao.)
-
- > I don't know if there are any limitations in stty(1). In any case it
- > is easy to write a little C program to set the baud rate and use stty(1)
- > for the rest. See termio(7) for the required ioctl's.
-
- Sure. It should be possible to adapt GNU's gstty to do this job, but the
- actual problem is getty.
-
- > There is no need for uugetty(1m) on HP systems. We only supply it for
- > compatibility reasons. See "Terminal port access interlock" in modem(7)
-
- I only mentioned uugetty because we tried it to see if it would support
- anything faster than 38400 bps.
-
- > as to why uugetty(1m) is not needed. I don't know if getty(1m) can
- > handle 57600 baud, just try it.
-
- We already did, without success unfortunately.
- Eg. /etc/getty -c /etc/gettydefs yields:
-
- **** Next Entry ****
- 57600M # B57600 HUPCL IGNPAR ICRNL IXON OPOST ONLCR CS8 CREAD
- ISIG ICANON ECHO ECHOK ISTRIP IXANY TAB3
- # B57600 SANE CS8 ISTRIP IXANY TAB3 HUPCL
- #\n \n\n\n\n\t\tAccess restricted to authorized users!
- \n\n\n\n\n\nlogin: #57600M
-
- Undefined: B57600
- Undefined: B57600
-
- etcetera...
-
- Does anybody know if these high speed modes are _fully_ supported in HP-UX 8.07?
- Experiences?
-
- Regards,
- -Raymond
- --
- | Raymond Nijssen | Eindhoven University of Techology |
- | | Department of Electrical Engineering |
- | phone: +31-40-473373 | Design Automation Section (ES), Room EH 7.16 |
- | raymond@es.ele.tue.nl | P.O. Box 513, 5600 MB Eindhoven, The Netherlands |
- | | "Trust me. I know what I'm doing" (Sledge Hammer) |
-