28 Oct
2009
28 Oct
'09
2:02 p.m.
arcarlini at iee.org wrote:
cctalk-bounces at classiccmp.org wrote:
I took a good stare at the VT220 Programmers Reference. It looks like
'application mode' isn't that special. It really looks very similar to
the way the keypad is handled on the PC - in one mode you get the
numbers on the keypad, and in the other mode you get an ESC string to
indicate special keys.
Have I finally got this right? :-)
Mike
Just a little more help because I'm being
super thick - what exactly
does "keypad application mode mean"? I understand the difference
between numeric mode and non-numeric, or I'm assuming that it
works the
same way it does on PC. But the "application mode" thing is throwing
me off because I don't know what it means and can't draw my own
analogies.
iirc that ANSI standard was based on the DEC VT100, so if you read the
VT100 user manual (available on Manx I think) you'll have a good idea of
what everything is supposed to do.
My recollection is that in numeric keypad mode you cannot tell the
difference between "1" on the keypad and "1" above the
"Q".
In "application keypad" mode, "1" on the keypad generates an escape
sequence.
Antonio