C++ Variables Sent to AT&T Inline Assembly

Hi, I'm very new here and I've searched for a while now, but I just don't have the knowledge base to answer this question for myself...  I believe I know what the problem is.  I'm trying to pass in variables that don't match the size of the registars I'm trying to pass them into.  I need to do this in AT&T because I'm using Dev-CPP 4 by bloodshed.

Now, this is a really easy 120 points because this is for a school project thats due in a very short amount of time.  Whoever submits working code will get the points, A pure explanation will not do as I don't know assembly very well, but feel free to include an explanation as well, that would be ideal.  I must stress that this code MUST work in Dev-CPP 4 because I can get the intel version to work in early (but not up to date) versions of Borland's compiler.  Sorry for being so picky guys but it is important.

Please Please help me, whoever submits the code will definitly be in the credits.  If you want you can go above and beyond and submit working code of a pixel plotting method that is faster than this one (that doesn't use DD or OpenGL ect) that also works in Dev-CPP 4 and I'll award the correct answer that way also.

Intel Syntax
_____________
#include <stdio.h>

#define VGA256 0x13
#define XMAX 320
#define YMAX 200

void pset(int x,int y,unsigned char color);
unsigned char get_mode(void);
void set_mode(unsigned char mode);

void main()
{
    unsigned char save,c;
    int x,y;

/* Initialze things */

    save = get_mode();      //Save current screen mode
    set_mode(VGA256);

/* Main routine */

    x=XMAX/2;
    y=YMAX/2;
    c=1;
    pset(x,y,c);

    getchar();

/* Reset stuff for end */

    set_mode(save);        //Restore screen mode
}

void pset(int x,int y,unsigned char color)
{
    _asm mov ah,0ch
    _asm mov al,color
    _asm mov cx,x
    _asm mov dx,y
    _asm int 10h
}

unsigned char get_mode(void)
{
    unsigned char mode;

    _asm mov ah,0fh
    _asm int 10h

    _asm mov mode,al
    return(mode);
}

void set_mode(unsigned char mode)
{
    _asm mov ah,00
    _asm mov al,mode
    _asm int 10h
}
_____________


My attempt at getting it into AT&T
_____________

#include <stdio.h>

#define VGA256 0x13
#define XMAX 320
#define YMAX 200

void pset(int x,int y,unsigned char color);
unsigned char get_mode(void);
void set_mode(unsigned char mode);

void main()
{
    unsigned char save,c;
    int x,y;

/* Initialze things */

    save = get_mode();      //Save current screen mode
    set_mode(VGA256);

/* Main routine */

    x=XMAX/2;
    y=YMAX/2;
    c=1;
    pset(x,y,c);

    getchar();

/* Reset stuff for end */

    set_mode(save);        //Restore screen mode
}

void pset(int x,int y,unsigned char color)
{
    __asm("mov $0x0c,%ah");
    __asm("mov color,%al");
    __asm("mov x,%cx");
    __asm("mov y,%dx");     //I believe a few of these lines can be simply
    __asm("int $0x10");     //replaced by loading the registers directly something like this
}                           //__asm("c", (x));  But I'll leave that to you before I muck it up.

unsigned char get_mode(void)
{
    unsigned char mode;

    __asm("mov $0x0f,%ah");
    __asm("int $0x10");

    __asm("mov mode,%al");
    return(mode);
}

void set_mode(unsigned char mode)
{
    __asm("mov $0x00,%ah");
    __asm("mov mode,%al");
    __asm("int $0x10");
}