[Simh] Questions about VT emulation

[Mark Pizzolato]

FYI, the latest simh available from https://github.com/simh/simh/master.zip shows more detail about the console PCHAR setting:

sim> show console pchar
pchar mask = 1000023640 {ESC,CR(^M),LF(^J),HT(^I),BS(^H),BEL(^G),ENQ(^E)}
sim>

The PCHAR setting influences output for characters with values < 0x20 (Space).

From: Simh [mailto:simh-bounces at trailing-edge.com] On Behalf Of Joe Ambrose
Sent: Saturday, May 27, 2017 5:36 PM
To: simh at trailing-edge.com
Subject: Re: [Simh] Questions about VT emulation


Follow up question then....



The value of the pchars option is 23600,  is this octal? Hex? Decimal?



If I want to pass all characters then I would need a value of 37777777777 octal….







=================================================

Joseph Ambrose

172 Ketcham Avenue

Amityville, NY 11701

Primary: 631-598-0528

  Mobile: 516-380-6047

   Email: joe11701 at verizon.net<mailto:joe11701 at verizon.net>

  Profile: http://www.linkedin.com/in/jambrose0321

     Blog: http://houseofdoejoegetsbigger.blogspot.com/





-----Original Message-----
From: Simh [mailto:simh-bounces at trailing-edge.com] On Behalf Of Johnny Billquist
Sent: Saturday, May 27, 2017 8:27 PM
To: simh at trailing-edge.com<mailto:simh at trailing-edge.com>
Subject: Re: [Simh] Questions about VT emulation



The pchar mask is to tell which characters are let through on the console port. It's "printable characters".



Essentially, characters not in that mask just gets dropped without being printed.



Will it affect escape sequences? Yes, if the escape character, or any other character in that sequence are among the characters filtered out, then you will not what you might be expecting.



As for "usable VT emulators", it all depends on what your expectations and demands are.

Pretty much any terminal emulator will have some level of VT emulation in there. But most of them have some bugs somewhere or another.



It you are really picky, then the only one I've found acceptable is xterm, and the actual DEC terminal emulator in Pathworks.



But for most people, something like Putty works well enough.



          Johnny



On 2017-05-27 04:27, Joe Ambrose wrote:

> Hi Y'all !!!

>

> I am trying to set up a PDP-11 emulation using RT-11.....

>

> I've set up a remote telnet console and I'd like to find out what VT

> emulatior you find that works.

> Here's my config file....

>

> set console telnet=1111

> set cpu 11/23+ 256K

> attach LPT lpt.txt

> set rl0 writeenabled

> set rl0 rl02

> attach rl0 rl0.dsk

> boot rl0

>

> When I sh console... this is what I get....

>

> PDP-11 simulator V3.9-0

> Listening on port 1111 (socket 136)

> Disabling CR

> Waiting for console Telnet connection

> rt11.ini> boot rl0

> Simulation stopped

> sim> sh console

> WRU = 5

> BRK = 0

> DEL = 10

> pchar mask = 23600

> Logging disabled

> Listening on port 1111

> Debug output disabled

>

> My question is about the pchar mask.

> What's it for?

> Will it affect the escape sequences I need to emulate a VT?

>

> Any help is much appreciated!

>

> =================================================

> Joseph Ambrose

> 172 Ketcham Avenue

> Amityville, NY 11701

> Primary: 631-598-0528

>   Mobile: 516-380-6047

>    Email: joe11701 at verizon.net<mailto:joe11701 at verizon.net> <mailto:joeambrose at optonline.net>

>   Profile: http://www.linkedin.com/in/jambrose0321

>      Blog: http://houseofdoejoegetsbigger.blogspot.com/

>

>

>

>

> _______________________________________________

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--

Johnny Billquist                  || "I'm on a bus

                                   ||  on a psychedelic trip

email: bqt at softjar.se<mailto:bqt at softjar.se>             ||  Reading murder books

pdp is alive!                     ||  tryin' to stay hip" - B. Idol

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