how keyboard quarrel x86 unprotected steel assembly?

i'm slight perplexing penetrate together initial pieces kernel. i now have whole heart collected down c code, i've managed displaying calm console window glorious goodness. now, i wish start usurpation keyboard quarrel i indeed thing going slight management.

i'm controlling djgpp compile, loading grub. i'm also controlling little bit public fundamentally jumps directly collected c formula i'm happy there.

all investigate i've finished seems indicate an isr during $0x16 review unbroken impression keyboard buffer. i tell, ostensible store ascii value ah, keycode al, something effect. i'm attempting formula controlling following slight inline assembly:

char getc(void) 
{
    int cost = 0;

    //crazy spell code
    asm("xor %%ah, %%ah\n\t"
        "int $0x16"
        : "=a" (output)
        : "a" (output)
        : 

        );

    relapse (char)output;
}

when formula called, core immediately crashes. (i'm controlling virtualbox, i didn't feel need try something simple genuine hardware.)

now i have indeed integrate questions. means tell me (since formula launched grub) i'm controlling genuine mode stable mode during moment. i haven't finished burst proceed another, i formulation controlling genuine mode until i got slight handler set up.

so, presumption i'm controlling genuine mode, am i doing wrong, i repair it? i only need simple getc routine, preferably non-blocking, nonetheless i'll darned google aiding during all. once i that, i rest there.

i speculation i'm seeking here is, am i anywhere circuitously right track? does generally removing keyboard quarrel level?

edit: oohh... i'm controlling stable mode. definitely explains wreck perplexing opening genuine mode functions then.

so following i speculation i'm looking opening keyboard io stable mode. i competence means own, nonetheless anyone happens know feel free. interjection again.