diff options
Diffstat (limited to 'source/spec.c')
| -rw-r--r-- | source/spec.c | 80 |
1 files changed, 78 insertions, 2 deletions
diff --git a/source/spec.c b/source/spec.c index 1a5eba2..0dc753f 100644 --- a/source/spec.c +++ b/source/spec.c @@ -134,9 +134,16 @@ static struct }; -/* The keyboard +/* The keyboard and joystick */ static Z80Byte matrix[8]; +static Z80Byte joystick; + +#define JOY_FIRE 0x10 +#define JOY_UP 0x08 +#define JOY_DOWN 0x04 +#define JOY_LEFT 0x02 +#define JOY_RIGHT 0x01 static struct { @@ -424,7 +431,66 @@ void SPECHandleKey(SoftKey key, int is_pressed) } else { - /* TODO: Joysticks? */ + switch(key) + { + case SK_PAD_UP: + if (is_pressed) + { + joystick = joystick | JOY_UP; + } + else + { + joystick = joystick & ~JOY_UP; + } + break; + + case SK_PAD_DOWN: + if (is_pressed) + { + joystick = joystick | JOY_DOWN; + } + else + { + joystick = joystick & ~JOY_DOWN; + } + break; + + case SK_PAD_LEFT: + if (is_pressed) + { + joystick = joystick | JOY_LEFT; + } + else + { + joystick = joystick & ~JOY_LEFT; + } + break; + + case SK_PAD_RIGHT: + if (is_pressed) + { + joystick = joystick | JOY_RIGHT; + } + else + { + joystick = joystick & ~JOY_RIGHT; + } + break; + + case SK_PAD_A: + if (is_pressed) + { + joystick = joystick | JOY_FIRE; + } + else + { + joystick = joystick & ~JOY_FIRE; + } + break; + + default: + break; + } } } @@ -448,9 +514,19 @@ Z80Byte SPECReadPort(Z80 *z80, Z80Word port) switch(lo) { case 0x1f: /* Kempston joystick */ + b = joystick; break; case 0x7f: /* Fuller joystick */ + b = ~joystick; + if (b & JOY_FIRE) + { + b |= 0x80; + } + else + { + b &= 0x7f; + } break; case 0xfb: /* ZX Printer */ |