Good references for ANSI terminal emulation?

[Michael B. Brutman]

arcarlini at iee.org wrote:
> cctalk-bounces at classiccmp.org wrote:
> 
>> 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

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