deepstone

annotate src/mouse.c @ 32:7c8402e27b7c

renamed Makefile.dos to Makefile
author John Tsiombikas <nuclear@member.fsf.org>
date Sun, 22 Sep 2013 18:37:46 +0300
parents f04884489bad
children
rev   line source
nuclear@0 1 #include "mouse.h"
nuclear@21 2 #include "inttypes.h"
nuclear@0 3
nuclear@0 4 #define INTR 0x33
nuclear@0 5
nuclear@0 6 #define QUERY 0
nuclear@0 7 #define SHOW 1
nuclear@0 8 #define HIDE 2
nuclear@0 9 #define READ 3
nuclear@0 10 #define WRITE 4
nuclear@0 11
nuclear@0 12 #define XLIM 7
nuclear@0 13 #define YLIM 8
nuclear@0 14
nuclear@0 15 int have_mouse(void)
nuclear@0 16 {
nuclear@21 17 int16_t res;
nuclear@21 18 __asm {
nuclear@0 19 mov ax, QUERY
nuclear@0 20 int INTR
nuclear@0 21 mov res, ax
nuclear@0 22 }
nuclear@0 23 return res;
nuclear@0 24 }
nuclear@0 25
nuclear@0 26 void show_mouse(int show)
nuclear@0 27 {
nuclear@21 28 int16_t cmd = show ? SHOW : HIDE;
nuclear@21 29 __asm {
nuclear@0 30 mov ax, cmd
nuclear@0 31 int INTR
nuclear@0 32 }
nuclear@0 33 }
nuclear@0 34
nuclear@0 35 int read_mouse(int *xp, int *yp)
nuclear@0 36 {
nuclear@21 37 int16_t x, y, bn;
nuclear@0 38
nuclear@21 39 __asm {
nuclear@0 40 mov ax, READ
nuclear@0 41 int INTR
nuclear@0 42 mov bn, bx
nuclear@0 43 mov x, cx
nuclear@0 44 mov y, dx
nuclear@0 45 /* XXX some sort of div by 8 in the original code ? */
nuclear@0 46 }
nuclear@0 47
nuclear@0 48 if(xp) *xp = x;
nuclear@0 49 if(yp) *yp = y;
nuclear@0 50 return bn;
nuclear@0 51 }
nuclear@0 52
nuclear@0 53 void set_mouse(int x, int y)
nuclear@0 54 {
nuclear@21 55 __asm {
nuclear@0 56 mov ax, WRITE
nuclear@21 57 mov ecx, x
nuclear@21 58 mov edx, y
nuclear@0 59 int INTR
nuclear@0 60 }
nuclear@0 61 }
nuclear@0 62
nuclear@0 63 void set_mouse_limits(int xmin, int ymin, int xmax, int ymax)
nuclear@0 64 {
nuclear@21 65 __asm {
nuclear@0 66 mov ax, XLIM
nuclear@21 67 mov ecx, xmin
nuclear@21 68 mov edx, xmax
nuclear@0 69 int INTR
nuclear@0 70 mov ax, YLIM
nuclear@21 71 mov ecx, ymin
nuclear@21 72 mov edx, ymax
nuclear@0 73 int INTR
nuclear@0 74 }
nuclear@0 75 }