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Annotation of uae/src/od-amiga/joystick.c, revision 1.1.1.3

1.1.1.2   root        1:  /*
1.1       root        2:   * UAE - The Un*x Amiga Emulator
1.1.1.2   root        3:   *
1.1       root        4:   * Joystick emulation for AmigaOS
1.1.1.2   root        5:   *
1.1       root        6:   * Copyright 1996, 1997 Samuel Devulder
                      7:   */
                      8: 
                      9: #include "sysconfig.h"
                     10: #include "sysdeps.h"
                     11: 
                     12: #include "options.h"
                     13: #include "memory.h"
                     14: #include "custom.h"
                     15: #include "joystick.h"
                     16: 
                     17: int nr_joysticks;
                     18: 
                     19: #include <hardware/custom.h>
                     20: #include <hardware/cia.h>
                     21: 
1.1.1.2   root       22: #define CIAAPRA 0xBFE001
1.1       root       23: #define CUSTOM  0xDFF000
                     24: 
                     25: static struct Custom *custom= (struct Custom*) CUSTOM;
                     26: static struct CIA *cia = (struct CIA *) CIAAPRA;
                     27: 
                     28: void read_joystick(int nr, unsigned int *dir, int *button)
                     29: {
                     30:     int bot, right, top, left, joy,fire;
1.1.1.2   root       31: 
1.1       root       32:     *dir = 0;
                     33:     *button = 0;
                     34:     if (nr >= nr_joysticks) return;
                     35: 
                     36:     joy   = custom->joy1dat;
                     37:     fire  = !( cia->ciapra & 0x0080 ) ? 1 : 0;
                     38: 
                     39:     right = (joy & 0x0002) ? 1 : 0;
                     40:     left  = (joy & 0x0200) ? 1 : 0;
                     41:     bot   = (joy & 0x0001) ? 1 : 0;
                     42:     top   = (joy & 0x0100) ? 1 : 0;
1.1.1.2   root       43: 
1.1       root       44:     *button = fire;
                     45:     *dir = bot | (right << 1) | (top << 8) | (left << 9);
                     46: }
                     47: 
                     48: void init_joystick(void)
                     49: {
                     50:     nr_joysticks = 1;
                     51: }
                     52: 
                     53: void close_joystick(void)
                     54: {
                     55: }
                     56: 

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