nuclear@0: #include "mouse.h"
nuclear@21: #include "inttypes.h"
nuclear@0: 
nuclear@0: #define INTR	0x33
nuclear@0: 
nuclear@0: #define QUERY	0
nuclear@0: #define SHOW	1
nuclear@0: #define HIDE	2
nuclear@0: #define READ	3
nuclear@0: #define WRITE	4
nuclear@0: 
nuclear@0: #define XLIM	7
nuclear@0: #define YLIM	8
nuclear@0: 
nuclear@0: int have_mouse(void)
nuclear@0: {
nuclear@21: 	int16_t res;
nuclear@21: 	__asm {
nuclear@0: 		mov ax, QUERY
nuclear@0: 		int INTR
nuclear@0: 		mov res, ax
nuclear@0: 	}
nuclear@0: 	return res;
nuclear@0: }
nuclear@0: 
nuclear@0: void show_mouse(int show)
nuclear@0: {
nuclear@21: 	int16_t cmd = show ? SHOW : HIDE;
nuclear@21: 	__asm {
nuclear@0: 		mov ax, cmd
nuclear@0: 		int INTR
nuclear@0: 	}
nuclear@0: }
nuclear@0: 
nuclear@0: int read_mouse(int *xp, int *yp)
nuclear@0: {
nuclear@21: 	int16_t x, y, bn;
nuclear@0: 
nuclear@21: 	__asm {
nuclear@0: 		mov ax, READ
nuclear@0: 		int INTR
nuclear@0: 		mov bn, bx
nuclear@0: 		mov x, cx
nuclear@0: 		mov y, dx
nuclear@0: 		/* XXX some sort of div by 8 in the original code ? */
nuclear@0: 	}
nuclear@0: 
nuclear@0: 	if(xp) *xp = x;
nuclear@0: 	if(yp) *yp = y;
nuclear@0: 	return bn;
nuclear@0: }
nuclear@0: 
nuclear@0: void set_mouse(int x, int y)
nuclear@0: {
nuclear@21: 	__asm {
nuclear@0: 		mov ax, WRITE
nuclear@21: 		mov ecx, x
nuclear@21: 		mov edx, y
nuclear@0: 		int INTR
nuclear@0: 	}
nuclear@0: }
nuclear@0: 
nuclear@0: void set_mouse_limits(int xmin, int ymin, int xmax, int ymax)
nuclear@0: {
nuclear@21: 	__asm {
nuclear@0: 		mov ax, XLIM
nuclear@21: 		mov ecx, xmin
nuclear@21: 		mov edx, xmax
nuclear@0: 		int INTR
nuclear@0: 		mov ax, YLIM
nuclear@21: 		mov ecx, ymin
nuclear@21: 		mov edx, ymax
nuclear@0: 		int INTR
nuclear@0: 	}
nuclear@0: }