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r3299 Saturday 20th September, 2008 at 11:49:11 UTC by Fabio Priuli
[MEGADRIVE] Added possibility to choose between 3 and 6 buttons Joypads (MAME changes submitted to MAMEDev)
[src/mame/drivers]megadriv.c megadriv.h
[src/mess/drivers]genesis.c

src/mame/drivers/megadriv.c
r3298r3299
14251425}
14261426
14271427/* pointers to our io data read/write functions */
1428static UINT8 (*megadrive_io_read_data_port_ptr)(int offset);
1429static void (*megadrive_io_write_data_port_ptr)(int offset, UINT16 data);
1428UINT8 (*megadrive_io_read_data_port_ptr)(int offset);
1429void (*megadrive_io_write_data_port_ptr)(int offset, UINT16 data);
14301430
14311431INPUT_PORTS_START( megadri6 )
14321432   PORT_START("PAD1")      /* Joypad 1 (6 button + start + mode) NOT READ DIRECTLY */
r3298r3299
17151715#define UP_BUTTON(player)    ((input_port_read_safe(Machine, padnames[player], 0) & 0x0001) >> 0 )
17161716#define MD_RESET_BUTTON       ((input_port_read_safe(Machine, "RESET", 0x00) & 0x01) >> 0 )
17171717
1718static UINT8 megadrive_io_data_regs[3];
1719static UINT8 megadrive_io_ctrl_regs[3];
1718UINT8 megadrive_io_data_regs[3];
1719UINT8 megadrive_io_ctrl_regs[3];
17201720static UINT8 megadrive_io_tx_regs[3];
17211721
17221722static void megadrive_init_io(running_machine *machine)
src/mame/drivers/megadriv.h
r3298r3299
3232VIDEO_START( megadriv );
3333VIDEO_UPDATE( megadriv );
3434VIDEO_EOF( megadriv );
35
36/* Needed to create external input handlers (see e.g. MESS) */
37
38UINT8 (*megadrive_io_read_data_port_ptr)(int offset);
39void (*megadrive_io_write_data_port_ptr)(int offset, UINT16 data);
40UINT8 megadrive_io_data_regs[3];
41UINT8 megadrive_io_ctrl_regs[3];
src/mess/drivers/genesis.c
r3298r3299
6161static int megadrive_region_pal = 0;
6262
6363
64/*************************************
65 *
66 *  Input handlers
67 *
68 *************************************/
6469
70/* We need to always initialize 6 buttons pad */
71static emu_timer *mess_io_timeout[3];
72static int mess_io_stage[3];
73
74static TIMER_CALLBACK( mess_io_timeout_timer_callback )
75{
76   mess_io_stage[(int)(FPTR)ptr] = -1;
77}
78
79static void mess_init_6buttons_pad(void)
80{
81   int i;
82
83   for (i = 0; i < 3; i++)
84   {
85      mess_io_timeout[i] = timer_alloc(mess_io_timeout_timer_callback, (void*)(FPTR)i);
86      mess_io_stage[i] = -1;
87   }
88}
89
90/* These overwrite the MAME ones in DRIVER_INIT */
91/* They're needed to give the users the choice between different controllers */
92static UINT8 mess_md_io_read_data_port(int portnum)
93{
94   static const char *const pad6names[2][4] = {{ "PAD1_6B", "PAD2_6B", "UNUSED", "UNUSED" },
95                                    { "EXTRA1", "EXTRA2", "UNUSED", "UNUSED" }};
96   static const char *const pad3names[4] = { "PAD1_3B", "PAD2_3B", "UNUSED", "UNUSED" };
97
98   UINT8 retdata;
99   int controller;
100   UINT8 helper_6b = (megadrive_io_ctrl_regs[portnum] & 0x3f) | 0xc0; // bits 6 & 7 always come from megadrive_io_data_regs
101   UINT8 helper_3b = (megadrive_io_ctrl_regs[portnum] & 0x7f) | 0x80; // bit 7 always comes from megadrive_io_data_regs
102
103   switch (portnum)
104   {
105      case 0:
106         controller = (input_port_read(Machine, "CTRLSEL") & 0x0f);
107         break;
108
109      case 1:
110         controller = (input_port_read(Machine, "CTRLSEL") & 0xf0);
111         break;
112
113      default:
114         controller = 0;
115         break;
116   }
117
118   /* Are we using a 6 buttons Joypad? */
119   if (controller)
120   {
121      if (megadrive_io_data_regs[portnum] & 0x40)
122      {
123         if (mess_io_stage[portnum] == 2)
124         {
125            /* here we read B, C & the additional buttons */
126            retdata = (megadrive_io_data_regs[portnum] & helper_6b) |
127                     (((input_port_read_safe(Machine, pad6names[0][portnum], 0) & 0x30) |
128                        (input_port_read_safe(Machine, pad6names[1][portnum], 0) & 0x0f)) & ~helper_6b);
129         }
130         else
131         {
132            /* here we read B, C & the directional buttons */
133            retdata = (megadrive_io_data_regs[portnum] & helper_6b) |
134                     ((input_port_read_safe(Machine, pad6names[0][portnum], 0) & 0x3f) & ~helper_6b);
135         }
136      }
137      else
138      {
139         if (mess_io_stage[portnum] == 1)
140         {
141            /* here we read ((Start & A) >> 2) | 0x00 */
142            retdata = (megadrive_io_data_regs[portnum] & helper_6b) |
143                     (((input_port_read_safe(Machine, pad6names[0][portnum], 0) & 0xc0) >> 2) & ~helper_6b);
144         }
145         else if (mess_io_stage[portnum]==2)
146         {
147            /* here we read ((Start & A) >> 2) | 0x0f */
148            retdata = (megadrive_io_data_regs[portnum] & helper_6b) |
149                     ((((input_port_read_safe(Machine, pad6names[0][portnum], 0) & 0xc0) >> 2) | 0x0f) & ~helper_6b);
150         }
151         else
152         {
153            /* here we read ((Start & A) >> 2) | Up and Down */
154            retdata = (megadrive_io_data_regs[portnum] & helper_6b) |
155                     ((((input_port_read_safe(Machine, pad6names[0][portnum], 0) & 0xc0) >> 2) |
156                        (input_port_read_safe(Machine, pad6names[0][portnum], 0) & 0x03)) & ~helper_6b);
157         }
158      }
159
160   //  mame_printf_debug("read io data port stage %d port %d %02x\n",mess_io_stage[portnum],portnum,retdata);
161
162      retdata |= (retdata << 8);
163   }
164   /* Otherwise it's a 3 buttons Joypad */
165   else
166   {
167      if (megadrive_io_data_regs[portnum] & 0x40)
168      {
169         /* here we read B, C & the directional buttons */
170         retdata = (megadrive_io_data_regs[portnum] & helper_3b) |
171                  (((input_port_read_safe(Machine, pad3names[portnum], 0) & 0x3f) | 0x40) & ~helper_3b);
172      }
173      else
174      {
175         /* here we read ((Start & A) >> 2) | Up and Down */
176         retdata = (megadrive_io_data_regs[portnum] & helper_3b) |
177                  ((((input_port_read_safe(Machine, pad3names[portnum], 0) & 0xc0) >> 2) |
178                     (input_port_read_safe(Machine, pad3names[portnum], 0) & 0x03) | 0x40) & ~helper_3b);
179      }
180   }
181
182   return retdata;
183}
184
185
186static void mess_md_io_write_data_port(int portnum, UINT16 data)
187{
188   int controller;
189
190   switch (portnum)
191   {
192      case 0:
193         controller = (input_port_read(Machine, "CTRLSEL") & 0x0f);
194         break;
195
196      case 1:
197         controller = (input_port_read(Machine, "CTRLSEL") & 0xf0);
198         break;
199
200      default:
201         controller = 0;
202         break;
203   }
204
205   if (controller)
206   {
207      if (megadrive_io_ctrl_regs[portnum] & 0x40)
208      {
209         if (((megadrive_io_data_regs[portnum] & 0x40) == 0x00) && ((data & 0x40) == 0x40))
210         {
211            mess_io_stage[portnum]++;
212            timer_adjust_oneshot(mess_io_timeout[portnum], ATTOTIME_IN_CYCLES(8192,0), 0);
213         }
214
215      }
216   }
217   megadrive_io_data_regs[portnum] = data;
218   //mame_printf_debug("Writing IO Data Register #%d data %04x\n",portnum,data);
219}
220
221
65222/*************************************
66223 *
224 *  Input ports
225 *
226 *************************************/
227
228
229INPUT_PORTS_START( md )
230   PORT_START("CTRLSEL")   /* Controller selection */
231   PORT_CATEGORY_CLASS( 0x0f, 0x00, "Player 1 Controller" )
232   PORT_CATEGORY_ITEM( 0x00, "Joystick 3 Buttons", 10 )
233   PORT_CATEGORY_ITEM( 0x01, "Joystick 6 Buttons", 11 )
234//   PORT_CATEGORY_ITEM( 0x02, "Sega Mouse", 12 )
235/* there exists both a 2 buttons version of the Mouse (Jpn ver, to be used with RPGs, it
236   can aslo be used as trackball) and a 3 buttons version (US ver, no trackball feats.) */
237//   PORT_CATEGORY_ITEM( 0x03, "Sega Menacer", 13 )
238//   PORT_CATEGORY_ITEM( 0x04, "Konami Justifier", 14 )
239//   PORT_CATEGORY_ITEM( 0x05, "Team Player (Sega Multitap)", 15 )
240//   PORT_CATEGORY_ITEM( 0x06, "4-Play (EA Multitap)", 16 )
241//   PORT_CATEGORY_ITEM( 0x07, "J-Cart", 17 )
242   PORT_CATEGORY_CLASS( 0xf0, 0x00, "Player 2 Controller" )
243   PORT_CATEGORY_ITEM( 0x00, "Joystick 3 Buttons", 20 )
244   PORT_CATEGORY_ITEM( 0x10, "Joystick 6 Buttons", 21 )
245
246   PORT_START("PAD1_3B")      /* Joypad 1 (3 button + start) NOT READ DIRECTLY */
247   PORT_BIT( 0x0001, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY PORT_PLAYER(1) PORT_CATEGORY(10)
248   PORT_BIT( 0x0002, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_PLAYER(1) PORT_CATEGORY(10)
249   PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_PLAYER(1) PORT_CATEGORY(10)
250   PORT_BIT( 0x0008, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_PLAYER(1) PORT_CATEGORY(10)
251   PORT_BIT( 0x0010, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(1) PORT_NAME("P1 B") PORT_CATEGORY(10)
252   PORT_BIT( 0x0020, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_PLAYER(1) PORT_NAME("P1 C") PORT_CATEGORY(10)
253   PORT_BIT( 0x0040, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(1) PORT_NAME("P1 A") PORT_CATEGORY(10)
254   PORT_BIT( 0x0080, IP_ACTIVE_LOW, IPT_START ) PORT_PLAYER(1) PORT_CATEGORY(10)
255
256   PORT_START("PAD2_3B")      /* Joypad 2 (3 button + start) NOT READ DIRECTLY */
257   PORT_BIT( 0x0001, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY PORT_PLAYER(2) PORT_CATEGORY(20)
258   PORT_BIT( 0x0002, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_PLAYER(2) PORT_CATEGORY(20)
259   PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_PLAYER(2) PORT_CATEGORY(20)
260   PORT_BIT( 0x0008, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_PLAYER(2) PORT_CATEGORY(20)
261   PORT_BIT( 0x0010, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(2) PORT_NAME("P2 B") PORT_CATEGORY(20)
262   PORT_BIT( 0x0020, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_PLAYER(2) PORT_NAME("P2 C") PORT_CATEGORY(20)
263   PORT_BIT( 0x0040, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2) PORT_NAME("P2 A") PORT_CATEGORY(20)
264   PORT_BIT( 0x0080, IP_ACTIVE_LOW, IPT_START ) PORT_PLAYER(2) PORT_CATEGORY(20)
265
266   PORT_START("PAD1_6B")      /* Joypad 1 (6 button + start + mode) NOT READ DIRECTLY */
267   PORT_BIT( 0x0001, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY PORT_PLAYER(1) PORT_CATEGORY(11)
268   PORT_BIT( 0x0002, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_PLAYER(1) PORT_CATEGORY(11)
269   PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_PLAYER(1) PORT_CATEGORY(11)
270   PORT_BIT( 0x0008, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_PLAYER(1) PORT_CATEGORY(11)
271   PORT_BIT( 0x0010, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(1) PORT_NAME("P1 B") PORT_CATEGORY(11)
272   PORT_BIT( 0x0020, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_PLAYER(1) PORT_NAME("P1 C") PORT_CATEGORY(11)
273   PORT_BIT( 0x0040, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(1) PORT_NAME("P1 A") PORT_CATEGORY(11)
274   PORT_BIT( 0x0080, IP_ACTIVE_LOW, IPT_START ) PORT_PLAYER(1) PORT_CATEGORY(11)
275
276   PORT_START("EXTRA1")   /* Extra buttons for Joypad 1 (6 button + start + mode) NOT READ DIRECTLY */
277   PORT_BIT( 0x0001, IP_ACTIVE_LOW, IPT_BUTTON6 ) PORT_PLAYER(1) PORT_NAME("P1 Z") PORT_CATEGORY(11)
278   PORT_BIT( 0x0002, IP_ACTIVE_LOW, IPT_BUTTON5 ) PORT_PLAYER(1) PORT_NAME("P1 Y") PORT_CATEGORY(11)
279   PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_BUTTON4 ) PORT_PLAYER(1) PORT_NAME("P1 X") PORT_CATEGORY(11)
280   PORT_BIT( 0x0008, IP_ACTIVE_LOW, IPT_BUTTON7 ) PORT_PLAYER(1) PORT_NAME("P1 Mode") PORT_CATEGORY(11)
281
282   PORT_START("PAD2_6B")      /* Joypad 2 (6 button + start + mode) NOT READ DIRECTLY */
283   PORT_BIT( 0x0001, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY PORT_PLAYER(2) PORT_CATEGORY(21)
284   PORT_BIT( 0x0002, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_PLAYER(2) PORT_CATEGORY(21)
285   PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_PLAYER(2) PORT_CATEGORY(21)
286   PORT_BIT( 0x0008, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_PLAYER(2) PORT_CATEGORY(21)
287   PORT_BIT( 0x0010, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(2) PORT_NAME("P2 B") PORT_CATEGORY(21)
288   PORT_BIT( 0x0020, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_PLAYER(2) PORT_NAME("P2 C") PORT_CATEGORY(21)
289   PORT_BIT( 0x0040, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2) PORT_NAME("P2 A") PORT_CATEGORY(21)
290   PORT_BIT( 0x0080, IP_ACTIVE_LOW, IPT_START ) PORT_PLAYER(2) PORT_CATEGORY(21)
291
292   PORT_START("EXTRA2")   /* Extra buttons for Joypad 2 (6 button + start + mode) NOT READ DIRECTLY */
293   PORT_BIT( 0x0001, IP_ACTIVE_LOW, IPT_BUTTON6 ) PORT_PLAYER(2) PORT_NAME("P2 Z") PORT_CATEGORY(21)
294   PORT_BIT( 0x0002, IP_ACTIVE_LOW, IPT_BUTTON5 ) PORT_PLAYER(2) PORT_NAME("P2 Y") PORT_CATEGORY(21)
295   PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_BUTTON4 ) PORT_PLAYER(2) PORT_NAME("P2 X") PORT_CATEGORY(21)
296   PORT_BIT( 0x0008, IP_ACTIVE_LOW, IPT_BUTTON7 ) PORT_PLAYER(2) PORT_NAME("P2 Mode") PORT_CATEGORY(21)
297
298   PORT_START("RESET")      /* Buttons on Genesis Console */
299   PORT_BIT( 0x0001, IP_ACTIVE_HIGH, IPT_SERVICE1 ) PORT_NAME("Reset Button") PORT_IMPULSE(1) // reset, resets 68k (and..?)
300INPUT_PORTS_END
301
302
303INPUT_PORTS_START( md_svp )
304   PORT_INCLUDE( md )
305
306   /* We need this as long as we only have the US version of the SVP add-on,
307     otherwise we could not play Non-US Virtua Racing versions  */
308   PORT_START("REGION")
309   /* Region setting for Console */
310   PORT_CONFNAME( 0x000f, 0x0000, DEF_STR( Region ) )
311   PORT_CONFSETTING(      0x0000, "Use Default Choice" )
312   PORT_CONFSETTING(      0x0001, "US (NTSC, 60fps)" )
313   PORT_CONFSETTING(      0x0002, "Japan (NTSC, 60fps)" )
314   PORT_CONFSETTING(      0x0003, "Europe (PAL, 50fps)" )
315INPUT_PORTS_END
316
317
318/*************************************
319 *
67320 *  Machine driver
68321 *
69322 *************************************/
r3298r3299
72325{
73326   MACHINE_RESET_CALL( megadriv );
74327   MACHINE_RESET_CALL( md_mappers );
328   
329   mess_init_6buttons_pad();
75330}
76331
77332static MACHINE_DRIVER_START( ms_megadriv )
r3298r3299
118373ROM_END
119374
120375
121
122376/*************************************
123377 *
124378 *  Driver initialization
r3298r3299
129383{
130384   DRIVER_INIT_CALL(gencommon);
131385   DRIVER_INIT_CALL(megadriv);
386   
387   megadrive_io_read_data_port_ptr   = mess_md_io_read_data_port;
388   megadrive_io_write_data_port_ptr = mess_md_io_write_data_port;
132389}
133390
391static DRIVER_INIT( gensvp )
392{
393   DRIVER_INIT_CALL(gencommon);
394   DRIVER_INIT_CALL(megadsvp);
395}
396
134397static DRIVER_INIT( md_eur )
135398{
136399   DRIVER_INIT_CALL(gencommon);
r3298r3299
404667***************************************************************************/
405668
406669/*    YEAR  NAME      PARENT      COMPAT  MACHINE         INPUT     INIT        CONFIG      COMPANY   FULLNAME */
407CONS( 1989, genesis,   0,         0,      ms_megadriv,  megadri6, genesis,   genesis,   "Sega",   "Genesis (USA, NTSC)", 0)
408CONS( 1993, gensvp,      genesis,   0,      ms_megdsvp,   megdsvp,  megadsvp,   genesis,   "Sega",   "Genesis (USA, NTSC, w/SVP)", 0)
409CONS( 1990, megadriv,   genesis,   0,      ms_megadriv,  megadri6, md_eur,      genesis,   "Sega",   "Mega Drive (Europe, PAL)", 0)
410CONS( 1988, megadrij,   genesis,   0,      ms_megadriv,  megadri6, md_jpn,      genesis,   "Sega",   "Mega Drive (Japan, NTSC)", 0)
670CONS( 1989, genesis,   0,         0,      ms_megadriv,  md,      genesis,   genesis,   "Sega",   "Genesis (USA, NTSC)", 0)
671CONS( 1993, gensvp,      genesis,   0,      ms_megdsvp,   md_svp,   gensvp,      genesis,   "Sega",   "Genesis (USA, NTSC, w/SVP)", 0)
672CONS( 1990, megadriv,   genesis,   0,      ms_megadriv,  md,      md_eur,      genesis,   "Sega",   "Mega Drive (Europe, PAL)", 0)
673CONS( 1988, megadrij,   genesis,   0,      ms_megadriv,  md,      md_jpn,      genesis,   "Sega",   "Mega Drive (Japan, NTSC)", 0)
411674CONS( 1994, pico,      0,         0,      pico,         pico,      md_eur,      pico,      "Sega",   "Pico (Europe, PAL)", 0)
412675CONS( 1994, picou,      pico,      0,      pico,         pico,      genesis,   pico,      "Sega",   "Pico (USA, NTSC)", 0)
413676CONS( 1993, picoj,      pico,      0,      pico,         pico,      md_jpn,      pico,      "Sega",   "Pico (Japan, NTSC)", 0)

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