[syslinux] extlinux 6.03 serial console not responding to input

[Ady]

> How far such a backward compatibility fix should go?
 
A configuration file containing the following (1st) line (as example):

 SERIAL 0 115200 0x003

and/or the following:

 SERIAL 1 115200

and/or:

 SERIAL 0x3F8 115200

and/or any other documented syntax for the SERIAL directive should be 
supported in the next Syslinux release, and patches are welcome (better 
sooner rather than later :).

In other words, this is a regression bug, and AFAIK there was no 
intention to drop support of non-decimal values for the SERIAL 
directive.

Again, patches are welcome.

Regards,
Ady.