9 Apr
2002
9 Apr
'02
4:08 p.m.
Allison wrote:
You can use any dec terminal, set it to VT52 mode
and then try the results. The Video SRM (dec internal)
made the behavour a standard for all VT52/100/220/320
and all the rest.
My quick check of the the VT102 and VT220 manuals
does not show "ESC /" as a recognised emulated
VT52 sequence. The VT100 manual makes it quite
clear how to react to random ESCape sequences.
It is pretty silent on VT52 emulation mode. I suspect
the VSRM is too (if we still have one in
the office, I'll check tomorrow).
When I wrote a VT102 emulator, many moons
ago, I know that since most VT52 escape
sequences were of the form "ESC x" then
I would have ignored "ESC x" for an
unrecognised "x" and displayed
"ABC" when fed "A ESC / BC". It seems
that real VT terminals do not do this.
The only way to determine whether the VT1xx
is a faithful VT52 emulator is to see what
a real VT52 does. (Or read the schematics,
which I believe are online).
Antonio