adding to nk7110.c

[Tobie Kerridge]

I'm trying to understand how to add the enterchar function to nk7110.c, 
in essence I think this effects the file in three places;

1 prototyping the function:

	static gn_error NK7110_EnterChar(gn_data *data, struct gn_statemachine 
*state);

2 adding a case statement:

        case GN_OP_EnterChar:
                return NK7110_EnterChar(data, state);

3 adding a function called "EnterChar":

        static gn_error EnterChar(gn_data *data, struct gn_statemachine *state)
        {
                code
        }

I'm going to base that function on a piece of code from nk6110.c, and 
use nk6110.txt and nk7110.txt as a guide for the modification. Assuming 
I'm not oversimplifying the process grossly (I bet I am!) it seems that 
there are not too many parts of this function which are specific to the 
6110, apart from an opening statement:

nk6100_keytable *keytable = DRVINSTANCE(state)->keytable;

which I must admit I don't wholly understand, and is my first stumbling 
block. is "nk6100_keytable" included in one of the header files at the 
opening of the document? Is there an equivalent  "nk7100_keytable", or 
is this where the real work lies, or am I talking nonsense?