vt100 terminfo with padding for an actual vt100?

[Fritz Mueller]

> On Sep 4, 2016, at 6:08 PM, william degnan <billdegnan at gmail.com> wrote:
> 
> Even better, I found this post, this is my how to attach a vt100 to a VAX
> 4000, you can apply to most any case


Hi Bill,

Thanks for you help!

I will say that I have the getty running fine, baud rate, serial format, etc. all okay.  Works just fine at 1200 baud and below.  At higher baud rates, it seems like the vt100 is dropping some characters or bits after certain escape sequences, even with xon/xoff flow control enabled, so I’m *pretty* sure the issue is just with the padding values in the vt100 terminfo spec?

To answer your question, though: since this is Ubuntu 16.04, systemd based, it runs agetty, and has no inittab.  The sorta equivalent under systemd is serial-getty at .service, which on my system looks like what is posted below.  I’ve also posted the effective terminfo (from infocmp) below that.

	cheers,
	   —FritzM.

---------------- snip -----------------------------------------------------

#  This file is part of systemd.
#
#  systemd is free software; you can redistribute it and/or modify it
#  under the terms of the GNU Lesser General Public License as published by
#  the Free Software Foundation; either version 2.1 of the License, or
#  (at your option) any later version.

[Unit]
Description=Serial Getty on %I
Documentation=man:agetty(8) man:systemd-getty-generator(8)
Documentation=http://0pointer.de/blog/projects/serial-console.html
BindsTo=dev-%i.device
After=dev-%i.device systemd-user-sessions.service plymouth-quit-wait.service
After=rc-local.service

# If additional gettys are spawned during boot then we should make
# sure that this is synchronized before getty.target, even though
# getty.target didn't actually pull it in.
Before=getty.target
IgnoreOnIsolate=yes

[Service]
Environment=TERM=vt100
ExecStart=-/sbin/agetty --keep-baud 115200,38400,19200,9600,4800,1200 %I $TERM
Type=idle
Restart=always
UtmpIdentifier=%I
TTYPath=/dev/%I
TTYReset=yes
TTYVHangup=yes
KillMode=process
IgnoreSIGPIPE=no
SendSIGHUP=yes

[Install]
WantedBy=getty.target

---------------- snip -----------------------------------------------------

#	Reconstructed via infocmp from file: /lib/terminfo/v/vt100
vt100|vt100-am|dec vt100 (w/advanced video),
	am, mc5i, msgr, xenl, xon,
	cols#80, it#8, lines#24, vt#3,
	acsc=``aaffggjjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~,
	bel=^G, blink=\E[5m$<2>, bold=\E[1m$<2>,
	clear=\E[H\E[J$<50>, cr=^M, csr=\E[%i%p1%d;%p2%dr,
	cub=\E[%p1%dD, cub1=^H, cud=\E[%p1%dB, cud1=^J,
	cuf=\E[%p1%dC, cuf1=\E[C$<2>,
	cup=\E[%i%p1%d;%p2%dH$<5>, cuu=\E[%p1%dA,
	cuu1=\E[A$<2>, ed=\E[J$<50>, el=\E[K$<3>, el1=\E[1K$<3>,
	enacs=\E(B\E)0, home=\E[H, ht=^I, hts=\EH, ind=^J, ka1=\EOq,
	ka3=\EOs, kb2=\EOr, kbs=^H, kc1=\EOp, kc3=\EOn, kcub1=\EOD,
	kcud1=\EOB, kcuf1=\EOC, kcuu1=\EOA, kent=\EOM, kf0=\EOy,
	kf1=\EOP, kf10=\EOx, kf2=\EOQ, kf3=\EOR, kf4=\EOS, kf5=\EOt,
	kf6=\EOu, kf7=\EOv, kf8=\EOl, kf9=\EOw, lf1=pf1, lf2=pf2,
	lf3=pf3, lf4=pf4, mc0=\E[0i, mc4=\E[4i, mc5=\E[5i, rc=\E8,
	rev=\E[7m$<2>, ri=\EM$<5>, rmacs=^O, rmam=\E[?7l,
	rmkx=\E[?1l\E>, rmso=\E[m$<2>, rmul=\E[m$<2>,
	rs2=\E>\E[?3l\E[?4l\E[?5l\E[?7h\E[?8h, sc=\E7,
	sgr=\E[0%?%p1%p6%|%t;1%;%?%p2%t;4%;%?%p1%p3%|%t;7%;%?%p4%t;5%;m%?%p9%t\016%e\017%;$<2>,
	sgr0=\E[m\017$<2>, smacs=^N, smam=\E[?7h, smkx=\E[?1h\E=,
	smso=\E[7m$<2>, smul=\E[4m$<2>, tbc=\E[3g,