Here is a copy of the vt220 termcap entry adopted from a 4.3BSD UNIX machine.
We don't have any VT220 terminal to test these entries though.
We've checked this and some contain the same entry as in A/UX 1.1, so you may
need to change them to different entry names. Here is the entry:
dl|vt200|vt220|vt200-js|vt220-js|dec vt200 series with jump scroll:\\
:im=\\E[4h:ei=\\E[4l:mi:DC=\\E[P:dm=:ed=:al=\\E[L:dl=\\E[M:\\
:cs=\\E[%i%d;%dr:sf=\\ED:sr=\\EM:sb=\\EM:\\
:ce=\\E[K:cl=\\E[H\\E[J:CD=\\E[J:cm=\\E[%i%d;%dH:nd=\\E[C:up=\\E[A:\\
:so=\\E[7m:SE=\\E[27m:us=\\E[4m:ue=\\E[24m:\\
:md=\\E[1m:mr=\\E[7m:MB=\\E[5m:me=\\E[m:\\
:is=\\E>\\E[?3l\\E[?4l\\E[?5l\\E[?7h\\E[?8h\\E[1;24r\\E[24;1H:\\
:rs=\\E>\\E[?3l\\E[?4l\\E[?5l\\E[?7h\\E[?8h:\\
:tc=vt100:
d0|vt100|vt100-am|vt100am|dec vt100:\\
:do=^J:co#80:li#24:cl=50\\E[;H\\E[2J:sf=5\\ED:\\
:le=^H:bs:am:cm=5\\E[%i%d;%dH:nd=2\\E[C:up=2\\E[A:\\
:ce=3\\E[K:CD=50\\E[J:so=2\\E[7m:SE=2\\E[m:us=2\\E[4m:ue=2\\E[m:\\
:md=2\\E[1m:mr=2\\E[7m:MB=2\\E[5m:me=2\\E[m:is=\\E[1;24r\\E[24;1H:\\
:rf=/usr/lib/tabset/VT100:\\
:rs=\\E>\\E[?3l\\E[?4l\\E[?5l\\E[?7h\\E[?8h:ks=\\E[?1h\\E=:ke=\\E[?1l\\E>:\\
:ku=\\EOA:kd=\\EOB:kr=\\EOC:kl=\\EOD:KB=^H:\\
:ho=\\E[H:k1=\\EOP:k2=\\EOQ:k3=\\EOR:k4=\\EOS:pt:sr=5\\EM:vt#3:xn:\\
:SC=\\E7:rc=\\E8:cs=\\E[%i%d;%dr:
#
# From: Bracy H. Elton <elton@lll-crg>
dm|vt200-ss|vt220-ss|dec vt200 series with smooth scroll:\\
:is=\\E>\\E[?3l\\E[?4h\\E[?5l\\E[?7h\\E[?8h\\E[1;24r\\E[24;1H:\\
:rs=\\E>\\E[?3l\\E[?4h\\E[?5l\\E[?7h\\E[?8h:\\
:tc=vt200:
dn|vt200-w|vt220-w|vt200-wj|vt220-wj|dec vt200 series; 132 col.; jump scroll:\\
:is=\\E>\\E[?3h\\E[?4l\\E[?5l\\E[?7h\\E[?8h\\E[1;24r\\E[24;1H:\\
:rs=\\E>\\E[?3h\\E[?4l\\E[?5l\\E[?7h\\E[?8h:\\
:co#132:tc=vt200:
do|vt200-ws|vt220-ws|DEC vt200 series; 132 col.; smooth scroll:\\
:is=\\E>\\E[?3h\\E[?4h\\E[?5l\\E[?7h\\E[?8h\\E[1;24r\\E[24;1H:\\
:rs=\\E>\\E[?3h\\E[?4h\\E[?5l\\E[?7h\\E[?8h:\\
:co#132:tc=vt200: