CTRL+Fn and ALT+Fn mappings

[Paolo Gaggini <paolo@gseserver.net>]

Hi all,
here is a problem I've already seen discussed in the list, but with no 
clear answers for me.

This is the context:
- debian 4.0
- dosemu 1.4.0
- an old clipper application for dos, which uses CTRL+Fn and ALT+Fn 
combination keys to work

I launch dosemu fron the console, the application works fine except for 
that key combination. If I press CTRL^cF1 it works as CTRL+F1, but this 
is a problem for me to use that unusual key combination.

My keyboard is set as XLATE (ASCII 8bit) and with the linux command 
"showkey" I can see 4byte combination, for example the CONTROL+F1 
combination give me this 4 hex bytes: 0x1D 0x3B 0xBB 0x9D
How can I modify kbd_slang.c to match this keycodes??
Otherwise, there is a simple way to remapping CTRL+Fn/ALT+Fn ???

Thank you in advance
Paolo