1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/src/dos/mouse.c	Mon Jan 19 15:49:14 2015 +0200
     1.3 @@ -0,0 +1,93 @@
     1.4 +#include "mouse.h"
     1.5 +#include "inttypes.h"
     1.6 +
     1.7 +#define INTR	0x33
     1.8 +
     1.9 +#define QUERY	0
    1.10 +#define SHOW	1
    1.11 +#define HIDE	2
    1.12 +#define READ	3
    1.13 +#define WRITE	4
    1.14 +#define PIXRATE	0xf
    1.15 +
    1.16 +#define XLIM	7
    1.17 +#define YLIM	8
    1.18 +
    1.19 +int have_mouse(void)
    1.20 +{
    1.21 +	uint16_t res = 0;
    1.22 +	_asm {
    1.23 +		mov eax, QUERY
    1.24 +		int INTR
    1.25 +		mov res, ax
    1.26 +	}
    1.27 +	return res;
    1.28 +}
    1.29 +
    1.30 +void show_mouse(int show)
    1.31 +{
    1.32 +	uint16_t cmd = show ? SHOW : HIDE;
    1.33 +	_asm {
    1.34 +		mov ax, cmd
    1.35 +		int INTR
    1.36 +	}
    1.37 +}
    1.38 +
    1.39 +int read_mouse(int *xp, int *yp)
    1.40 +{
    1.41 +	uint16_t x, y, state;
    1.42 +	_asm {
    1.43 +		mov eax, READ
    1.44 +		int INTR
    1.45 +		mov state, bx
    1.46 +		mov x, cx
    1.47 +		mov y, dx
    1.48 +	}
    1.49 +
    1.50 +	if(xp) *xp = x;
    1.51 +	if(yp) *yp = y;
    1.52 +	return state;
    1.53 +}
    1.54 +
    1.55 +void set_mouse(int x, int y)
    1.56 +{
    1.57 +	_asm {
    1.58 +		mov eax, WRITE
    1.59 +		mov ecx, x
    1.60 +		mov edx, y
    1.61 +		int INTR
    1.62 +	}
    1.63 +}
    1.64 +
    1.65 +void set_mouse_limits(int xmin, int ymin, int xmax, int ymax)
    1.66 +{
    1.67 +	_asm {
    1.68 +		mov eax, XLIM
    1.69 +		mov ecx, xmin
    1.70 +		mov edx, xmax
    1.71 +		int INTR
    1.72 +		mov eax, YLIM
    1.73 +		mov ecx, ymin
    1.74 +		mov edx, ymax
    1.75 +		int INTR
    1.76 +	}
    1.77 +}
    1.78 +
    1.79 +void set_mouse_rate(int xrate, int yrate)
    1.80 +{
    1.81 +	_asm {
    1.82 +		mov ax, PIXRATE
    1.83 +		mov ecx, xrate
    1.84 +		mov edx, yrate
    1.85 +		int INTR
    1.86 +	}
    1.87 +}
    1.88 +
    1.89 +void set_mouse_mode(enum mouse_mode mode)
    1.90 +{
    1.91 +	if(mode == MOUSE_GFX) {
    1.92 +		set_mouse_rate(1, 1);
    1.93 +	} else {
    1.94 +		set_mouse_rate(8, 16);
    1.95 +	}
    1.96 +}