15 Mar
2007
15 Mar
'07
3:42 a.m.
On 15/03/07, Pete Turnbull <pete at dunnington.plus.com> wrote:
On 15/03/2007 09:34, Rob wrote:
as per the footnote .. but specifically:
Send it..
HOME Esc M Hello CR LF
Esc M Goodbye CR LF
Esc M Hello CR LF
Esc M Goodbye CR LF
you should only see two double-height "Hello"s..
send it HOME and a space
you should now see two double height "Goodbye"s ..
Many emulations drop the hidden second line, rather than remember it,
so it doesn't re-appear, and you end up with just the top line
changing, if it does even that .. I've seen some that change the top
line to single height, and leave line 2 on the screen with the bottom
half of the Hello on it, or worse, because they duplicated line 1,
they think that line 2 is now a double-height Hello, overwriting line
3....
I've never seen an emulation that could cope
with the rare case of
"remove the double-height -start-code" properly[1] apart from the one
I wrote, probably because nobody ever thought hard about the
implications of it..
Define "properly" and I'll tell you if mine does :-)