[syslinux] Re: Remapping Serial Keyboard Input with SYSLINUX

[H. Peter Anvin]

George Pajari wrote:
> I wrote earlier:
> 
>> I have a system with a Matrix Orbital keypad (only) on ttyS0 which
>> generates it own strange bytes when keys are pressed. Is there
>> something similar to the KBDMAP directive but for serial input? 
> 
> 
> I've now spent more time looking in the comio.inc and see how the KBDMAP
> is implemented and how one could extend it to serial keyboard mapping.
> Before I launch on this project I should like to solicit some design
> guidance from the syslinux community.
> 
> Here are the three obvious ways of supporting keyboard mapping:
> 
> 1 - The KBDMAP applies equally to both keyboard and serial input
> (currently it only applies to keyboard input)
> 2 - There is one KBDMAP and the user (in the config file) can specify it
> applies to the keyboard only, serial input only, or both.
> 3 - There are two maps (say, KBDMAP and SERIALMAP) at the cost of
> another 256 bytes of memory + some code
> 
> What is your preference? What does the Master (hpa) think?
> 
> Have guidance, will code...
> 

I'd say #3.  The extra memory is pretty trivial (code size is much more
of an issue, and that applies to #2 as well.)  #1 is not acceptable --
most users of serial terminals expect it to be already decoded, which
may not apply to terminals in, say, France where most keyboards may be
AZERTY.

	-hpa