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Article View: comp.sys.amiga.tech
Article #11283

Re: DTR and serial.device

#11283
From: Marco Papa
Date: Tue, 31 Jan 1989 22:17
30 lines
1700 bytes
In article <443@madnix.UUCP> perry@madnix.UUCP (Perry Kivolowitz) writes:
|Marco's suggestion to access the CIA registers directly for toggling
|DTR is *not* a good idea for  the  following reason: No other serial
|port besides the internal one uses the CIA.
...
|Another suggestion:
|In an earlier incantation of my serial device driver I added a command
|which would allow access to all setable outputs. Something like:
|
|io_Command = CMD_SET_SERIAL_CTRL_LINES;
|io_Length  = MASK_OF_BITS_TO_BE_AFFECTED;
|io_Actual  = WHAT_TO_SET_THEM_TO;
|
|DoIO(IOB)
|
|If we all agree to make this a standard, well then, it will become a
|standard.

Perry,

I just received word from Bryce that the "standard" way to drop DTR
is to close and then reopen the device.  This should work no matter
what serial device and unit one is using.

-- Marco Papa 'Doc'

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Technical Details
Message-ID: <15068@oberon.USC.EDU>
Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!bbn!oberon!pollux.usc.edu!papa
References: <10511@well.UUCP> <15000@oberon.USC.EDU> <443@madnix.UUCP>

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!bbn!oberon!pollux.usc.edu!papa
From: papa@pollux.usc.edu (Marco Papa)
Newsgroups: comp.sys.amiga.tech
Subject: Re: DTR and serial.device
Keywords: serial, RS232, modem
Message-ID: <15068@oberon.USC.EDU>
Date: 31 Jan 89 22:17:55 GMT
References: <10511@well.UUCP> <15000@oberon.USC.EDU> <443@madnix.UUCP>
Sender: news@oberon.USC.EDU
Reply-To: papa@pollux.usc.edu (Marco Papa)
Distribution: usa
Organization: Felsina Software, Los Angeles, CA
Lines: 30