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From: coburn@clo.enet.dec.com (John T. Coburn)
Newsgroups: comp.sys.amiga.datacomm
Subject: Re: Handshake 2.20c questions
Message-ID: <23307@shlump.lkg.dec.com>
Date: 9 Jun 91 21:34:56 GMT
Sender: newsdaemon@shlump.lkg.dec.com
Organization: DEC - EIS Cleveland, Ohio
Lines: 49


In article <2996@public.BTR.COM>, thad@public.BTR.COM (Thaddeus P. Floryan) writes...
: 
:The REAL problem is NOT how DEC VT2?? and VT3?? terminals and clones (both
:hardware and software) operate.  Handshake mimics a real DEC VT2?? properly.
: 
:I have "real" DEC VT100, DEC VT102, DEC VT220, and DEC VT340 terminals at my
:office and can see how they are definitely braindamaged.
: 
:A REAL DEC VT220, operated in DEC VT100 mode, will shift to VT2?? mode after
:a "SET TERM/INQUIRE" under VMS 4.3, 4.4, 4.7, and all 5.*.
: 

This happens because the SET TERM/INQ code tells the VT2xx to switch to VT200,
7bit controls mode. This is the real problem.. Handshake is just doing what it
is told to do.

[text removed]

:The "problem" is that the DEC terminals, upon receipt of the inquiry code,
:indicate they're a (for example) DEC VT220 in VT100 mode and then setup to
:VT200 mode; though it's been a while since I've connected DLM test equipment to
:check this, it's my recollection that VMS itself instructs the terminal to
:enter VT200 mode even though the user had the terminal set in VT100 mode.
: 

This is essentially correct. If you want to be in VT100 mode then you need to
return a VT100 identification sequence to keep SET TERM/INQ from telling you to
change your mode. This may be where Handshake needs to fixed.

:IN ANY EVENT, it is NOT a problem with Handshake (in this regards); Handshake
:does exactly what DEC's own terminals do in this respect.  Not only that,
:EVERY VT200 clone terminal I've tested over the years (e.g. Liberty, Falco,
:et al) does the same annoying thing ONLY on a VMS system.
: 
:Why do you think VMS is colloquially known as the Vomit Making System?   :-)
: 

I disagree - at least VMS is usable. Maybe I'm biased having grown up on RT11,
RSX-11M and CPM. Amigas and VMS forever. :-)

:Thad Floryan [ thad@btr.com (OR) {decwrl, mips, fernwood}!btr!thad ]

--------------------------------------------------------------------------------
John Coburn                             !Email:
Digital Equipment Corporation           ! coburn@clovax.enet.dec.com   -or-
Digital Services, Consulting Services 	! coburn%clovax.enet@decwrl.dec.com
Cleveland, Ohio                         ! ...!decwrl!clovax.enet!coburn
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