9 Apr
2002
9 Apr
'02
9:10 a.m.
Does anyone have a live VT52 to hand? I'm working on a patch for xterm,
and I have a query about its behaviour that could be answered by having
someone type five characters in local mode and reporting the results.
Unfortunately my VT52 is dead and I haven't spent the time to discover
why, yet. I promise that these five characters won't kill yours!
9 Apr
9 Apr
9:54 a.m.
Does anyone have a live VT52 to hand? I'm working
on a patch for xterm,
and I have a query about its behaviour that could be answered by having
someone type five characters in local mode and reporting the results.
Unfortunately my VT52 is dead and I haven't spent the time to discover
why, yet. I promise that these five characters won't kill yours!
I've got a VT100 I could run in VT52 mode and Kermit which does
excellent VT52. I've also got a Zorba CP/M box which was VT52/H19
compatible...
I don't know anyone with a still-existing VT52.
Bill
--
d|i|g|i|t|a|l had it THEN. Don't you wish you could still buy it now!
bpechter@shell.monmouth.com|pechter@ureach.com
10:07 a.m.
--- Bill Pechter <pechter(a)pechter.dyndns.org> wrote:
I have several, but all packed away in storage. In the past, I found
that the VT52 emulation in the VT220 wasn't accurate enough to run
the VTEDIT macro under OS/8. I bought my last one c. 1987 for $50.
I haven't seen any lately.
-ethan
__________________________________________________
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Does anyone
have a live VT52 to hand?
I don't know anyone with a still-existing VT52.
Bill
10:49 a.m.
Ethan Dicks wrote:
In the past, I found that the VT52 emulation in the VT220 wasn't
accurate enough to run the VTEDIT macro under OS/8.
That's very interesting. VT52 mode is so simple that I would have
thought it was difficult to get wrong. Mind you, the VT420 in VT52 mode
can produce garbage on the screen when stressed by vttest, so if DEC
couldn't get it right ...
I bought my last one c. 1987 for $50.
I haven't seen any lately.
A few months ago I was contacted by a gentleman who had a VT52 and a
VT180 in his loft, complete with loads of manuals and software. He was
happy to donate it to a good home. The VT180 is working, but I haven't
had time to play with it yet. The VT52/VT55 manuals he supplied are now
all online.
Regards,
Paul
10:43 a.m.
Bill Pechter wrote:
I've got a VT100 I could run in VT52 mode and Kermit which does
excellent VT52. I've also got a Zorba CP/M box which was VT52/H19
compatible...
Thanks Bill, but I am specifically searching for differences between a
real VT52 and any later terminal in VT52 mode. Yes, I am that obsessed
with trivia!
Regards,
Paul
12:26 p.m.
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10:13 a.m.
Paul,
most newer VTs can be switched to VT52 mode in setup. I don't have a
real VT52, but I can, as certainly many others here, easily offer to
type in whatever you want me to using a VT320 or VT420 switched to VT52
mode. I might even dig out a VT100, which IIRC can also be set to VT52
mode. I think their behaviour will be close enough to a real VT52 to
make your patch fully compatible. And, yes, thanks, I do know how to
produce an ESC with those LKnnn keyboards. I assume at least one of the
five characters is 0x1B?
Andreas
Paul Williams wrote:
Does anyone have a live VT52 to hand? I'm working on a patch for xterm,
and I have a query about its behaviour that could be answered by having
someone type five characters in local mode and reporting the results.
Unfortunately my VT52 is dead and I haven't spent the time to discover
why, yet. I promise that these five characters won't kill yours!
--
Andreas Freiherr
Vishay Semiconductor GmbH, Heilbronn, Germany
http://www.vishay.com
10:41 a.m.
Andreas Freiherr wrote:
most newer VTs can be switched to VT52 mode in setup. I don't have a
real VT52, but I can, as certainly many others here, easily offer to
type in whatever you want me to using a VT320 or VT420 switched to
VT52 mode.
Thanks Andreas, but I have working examples of most newer DEC terminals.
I have a complete state diagram for the behaviour of the these terminals
in VT52 mode and I was now trying to discover any differences.
You're right about compatibility of the patch of course, because xterm
in VT52 mode should behave the same as any VT100 to VT500 in VT52 mode.
However, having been completist about the ANSI-mode parser[1], I would
like to finish the job for the VT52 itself.
[1] http://vt100.net/emu/dec_ansi_parser -- only for insomniacs!
Cheers,
Paul
10:21 a.m.
Paul Williams wrote:
Does anyone have a live VT52 to hand? I'm working
on a patch for xterm,
and I have a query about its behaviour that could be answered by having
someone type five characters in local mode and reporting the results.
Unfortunately my VT52 is dead and I haven't spent the time to discover
why, yet. I promise that these five characters won't kill yours!
Jerome Fine replies:
OK! But I have not turned mine on for at least two
years. But I will if you send the five characters. By the
way, I forget how to use local mode as well.
Sincerely yours,
Jerome Fine
--
If you attempted to send a reply and the original e-mail
address has been discontinued due a high volume of junk
e-mail, then the semi-permanent e-mail address can be
obtained by replacing the four characters preceding the
'at' with the four digits of the current year.
11 a.m.
"Jerome H. Fine" wrote:
OK! But I have not turned mine on for at least two
years. But I will if you send the five characters. By the
way, I forget how to use local mode as well.
Thank you. The five characters are:
"A" <ESC> "/" "B" "C"
The output on later terminals in VT52 mode is "AC", but from reading the
maintenance manual I suspect that a VT52 will output "ABC".
To set the terminal up for local operation, tip the unit up on its rear.
Notice the two rotary switches. Use a screwdriver or coin to turn S1
(the one on the right) to its most counterclockwise position, Position
1. Turn the other switch, S2, its most clockwise position, and then
counterclockwise one position. This is Position G.
Cheers,
Paul
5:44 p.m.
Paul Williams wrote:
"Jerome H.
Fine" wrote:
OK! But I have not turned mine on for at least two
years. But I will if you send the five characters. By the
way, I forget how to use local mode as well.
Thank you. The five characters are:
"A" <ESC> "/" "B" "C"
The output on later terminals in VT52 mode is "AC", but from reading the
maintenance manual I suspect that a VT52 will output "ABC". To set the terminal up for local operation, tip the
unit up on its rear.
Notice the two rotary switches. Use a screwdriver or coin to turn S1
(the one on the right) to its most counterclockwise position, Position
1. Turn the other switch, S2, its most clockwise position, and then
counterclockwise one position. This is Position G.
Cheers,
Paul
It took a while, but I finally managed to get into local mode.
But now I think I can't get back into normal mode even though
the switches are in the original position - oh well.
Sincerely yours,
Jerome Fine
--
If you attempted to send a reply and the original e-mail
address has been discontinued due a high volume of junk
e-mail, then the semi-permanent e-mail address can be
obtained by replacing the four characters preceding the
'at' with the four digits of the current year.
10 Apr
10 Apr
7:47 a.m.
"Jerome H. Fine" wrote:
As for the DEC VT52, with both upper case and lower case, the output
in local mode is ALWAYS "ABC" or "abc" when I type those five
characters in by hand in local mode.
Thank you.
I was never able to test in normal mode since I could
not seem to
get a cable which worked.
A piece of wire between pins 2 and 3?
Any other sequences?
No thanks. This was just clearing up an oddity in the operator test
procedure where you go into local mode and type ESC Z (the ident
sequence) and then observe a single character on the screen. The
response string would be something like ESC / K, where the final letter
varies with model of terminal and installed options. However, the
terminal swallows ESC / on the way back, and just displays the final
character. You can't try this in VT52 mode on later terminals because
they swallow the entire sequence (which in their case is ESC / Z).
Case closed, thanks Jerome.
It took a while, but I finally managed to get into
local mode.
But now I think I can't get back into normal mode even though
the switches are in the original position - oh well.
You may have to turn the unit off in order to effect the change, I'm not
sure. You'll find the switch definitions in the DECscope User's Manual
and the Maintenance Manual, both of which are online.
Cheers,
Paul
9 Apr
9 Apr
12:35 p.m.
Oh I wish I had one - the clack clack of the
solenoid pounding on the plate below the keyboard...
memories..
I'll just have to use my VT-05, the VT52's grand daddy L;)
anybody have a termcap or specs/manuals for one of these?
heinz
Subject: Re: Does anyone have a live VT52?
Paul Williams
wrote:
Does anyone have a live VT52 to hand? I'm
working on a patch for xterm,
and I have a query about its behaviour that could be answered by having
someone type five characters in local mode and reporting the results.
Unfortunately my VT52 is dead and I haven't spent the time to discover
why, yet. I promise that these five characters won't kill yours!
Jerome Fine replies:
OK! But I have not turned mine on for at least two
years. But I will if you send the five characters. By the
way, I forget how to use local mode as well.
12:45 p.m.
Heinz Wolter wrote:
I'll just have to use my VT-05, the VT52's grand daddy L;)
anybody have a termcap or specs/manuals for one of these?
David Gesswein has scanned the Reference Manual and Maintenance Manual
and made them available on http://www.pdp8.net.
I have converted the Reference Manual to HTML at
http://vt100.net/docs/vt05-rm/. I think there is enough information to
construct a termcap, although its capabilities are rather limited.
Regards,
Paul
1:23 p.m.
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8135
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14 comments
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participants (7)
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Andreas.Freiherr＠Vishay.com -
ard＠p850ug1.demon.co.uk -
celigne＠celigne.freeserve.co.uk -
erd_6502＠yahoo.com -
h.wolter＠sympatico.ca -
jhfinepw4z＠compsys.to -
pechter＠pechter.dyndns.org