src/mess/machine/rp5c15.c
| r0 | r802 | |
| 1 | /* |
| 2 | |
| 3 | Ricoh RP5C15 Real-time Clock |
| 4 | Written by Barry Rodewald |
| 5 | Started 04/07/07 |
| 6 | |
| 7 | Registers are separated into two banks, switchable through |
| 8 | the LSB of the MODE register. |
| 9 | |
| 10 | Date and time are stored in BCD, one digit to each register |
| 11 | |
| 12 | Register BANK 0 BANK 1 |
| 13 | 0 Timer seconds CLKOUT |
| 14 | 1 Timer seconds (10s) RTC Adjustment |
| 15 | 2 Timer minutes Alarm minutes |
| 16 | 3 Timer minutes (10s) Alarm minutes (10s) |
| 17 | 4 Timer hours Alarm hours |
| 18 | 5 Timer hours (10s) Alarm hours (10s) |
| 19 | 6 Timer day-of-week Alarm day-of-week |
| 20 | 7 Timer day Alarm day |
| 21 | 8 Timer day (10s) Alarm day (10s) |
| 22 | 9 Timer month (unused) |
| 23 | 10 Timer month (10s) 12/24 hour clock selection |
| 24 | 11 Timer year Years until next leap year |
| 25 | 12 Timer year (10s) (unused) |
| 26 | 13 MODE register MODE register |
| 27 | 14 TEST register TEST register |
| 28 | 15 RESET register RESET register |
| 29 | |
| 30 | |
| 31 | CLKOUT (W/O) - on the X68000, this is connected to the Timer LED |
| 32 | xxxxx000 = always high (on) |
| 33 | xxxxx001 = 16384Hz |
| 34 | xxxxx010 = 1024Hz |
| 35 | xxxxx011 = 128Hz |
| 36 | xxxxx100 = 16Hz |
| 37 | xxxxx101 = 1Hz |
| 38 | xxxxx110 = 1/60Hz |
| 39 | xxxxx111 = always low (off) |
| 40 | |
| 41 | Adjustment register (R/W) |
| 42 | bit 0 = if set, will reset the seconds to zero, and if the |
| 43 | seconds were > 30, increment the minutes by 1. |
| 44 | Always returns 0. |
| 45 | |
| 46 | 12/24 hour clock register (R/W) (not implemented yet) |
| 47 | bit 0 = selects 12 or 24 hour clock |
| 48 | presumably, on reading, returns AM/PM status. |
| 49 | |
| 50 | Leap year register |
| 51 | bit 0,1 = returns number of years until next leap year. |
| 52 | Is simply year % 4. |
| 53 | |
| 54 | MODE register (R/W) |
| 55 | bit 0 = if set, selects BANK 1, if reset, selects BANK 0 |
| 56 | bit 2 = Alarm enable |
| 57 | bit 3 = Timer enable |
| 58 | |
| 59 | TEST register (not implemented yet) |
| 60 | bits 0-3 = generally all set to 0, use is unknown. |
| 61 | |
| 62 | RESET register (not implemented yet) |
| 63 | bit 0 = Alarm reset |
| 64 | bit 1 = Timer reset |
| 65 | bit 2 = if set, 16Hz pulse is off |
| 66 | bit 3 = if set, 1Hz pulse is off |
| 67 | |
| 68 | */ |
| 69 | |
| 70 | #include "rp5c15.h" |
| 71 | |
| 72 | struct rp5c15 rtc; |
| 73 | |
| 74 | mame_timer* rtc_timer; |
| 75 | |
| 76 | TIMER_CALLBACK(rtc_alarm_pulse) |
| 77 | { |
| 78 | if(rtc.pulse16_state == 0) // low |
| 79 | { |
| 80 | rtc.pulse16_state = 1; // make high |
| 81 | rtc.pulse_count++; |
| 82 | } |
| 83 | else |
| 84 | { |
| 85 | rtc.pulse16_state = 0; // make low |
| 86 | } |
| 87 | |
| 88 | if(rtc.pulse_count == 8) |
| 89 | { |
| 90 | rtc.pulse1_state = 0; |
| 91 | } |
| 92 | if(rtc.pulse_count == 16) |
| 93 | { |
| 94 | rtc.pulse_count = 0; |
| 95 | rtc.pulse1_state = 1; |
| 96 | rtc_add_second(); |
| 97 | } |
| 98 | } |
| 99 | |
| 100 | void rp5c15_init(struct rp5c15_interface* intf) |
| 101 | { |
| 102 | mame_system_time systm; |
| 103 | mame_system_tm time; |
| 104 | |
| 105 | rtc.alarm_callback = intf->alarm_irq_callback; |
| 106 | |
| 107 | mame_get_base_datetime(Machine,&systm); |
| 108 | time = systm.local_time; |
| 109 | |
| 110 | // date/time is stored as BCD |
| 111 | rtc.systime.sec_1 = time.second % 10; |
| 112 | rtc.systime.sec_10 = time.second / 10; |
| 113 | rtc.systime.min_1 = time.minute % 10; |
| 114 | rtc.systime.min_10 = time.minute / 10; |
| 115 | rtc.systime.hour_1 = time.hour % 10; |
| 116 | rtc.systime.hour_10 = time.hour / 10; |
| 117 | rtc.systime.day_1 = time.mday % 10; |
| 118 | rtc.systime.day_10 = time.mday / 10; |
| 119 | rtc.systime.month_1 = (time.month+1) % 10; |
| 120 | rtc.systime.month_10 = (time.month+1) / 10; |
| 121 | rtc.systime.year_1 = (time.year - 1980) % 10; |
| 122 | rtc.systime.year_10 = (time.year - 1980) / 10; |
| 123 | rtc.systime.dayofweek = time.weekday; |
| 124 | rtc.alarm.min_1 = time.minute % 10; |
| 125 | rtc.alarm.min_10 = time.minute / 10; |
| 126 | rtc.alarm.hour_1 = time.hour % 10; |
| 127 | rtc.alarm.hour_10 = time.hour / 10; |
| 128 | rtc.alarm.day_1 = time.mday % 10; |
| 129 | rtc.alarm.day_10 = time.mday / 10; |
| 130 | rtc.alarm.dayofweek = time.weekday; |
| 131 | rtc.leap = time.year % 4; |
| 132 | |
| 133 | rtc.mode = 0x08; // Timer enabled, Alarm disable, BANK 0 selected (defaults are guessed) |
| 134 | rtc.reset = 0x00; // enable both 1Hz and 16Hz alarm counters by default |
| 135 | rtc.test = 0x00; |
| 136 | rtc.pulse_count = 0; |
| 137 | |
| 138 | rtc_timer = mame_timer_alloc(rtc_alarm_pulse); |
| 139 | mame_timer_adjust(rtc_timer, time_zero, 0, MAME_TIME_IN_HZ(32)); |
| 140 | } |
| 141 | |
| 142 | int rp5c15_read(int offset, UINT16 mem_mask) |
| 143 | { |
| 144 | if((rtc.mode & 0x01) == 0x00) // BANK 0 selected |
| 145 | { |
| 146 | switch(offset) |
| 147 | { |
| 148 | case 0: |
| 149 | return rtc.systime.sec_1; |
| 150 | case 1: |
| 151 | return rtc.systime.sec_10; |
| 152 | case 2: |
| 153 | return rtc.systime.min_1; |
| 154 | case 3: |
| 155 | return rtc.systime.min_10; |
| 156 | case 4: |
| 157 | return rtc.systime.hour_1; |
| 158 | case 5: |
| 159 | return rtc.systime.hour_10; |
| 160 | case 6: |
| 161 | return rtc.systime.dayofweek; |
| 162 | case 7: |
| 163 | return rtc.systime.day_1; |
| 164 | case 8: |
| 165 | return rtc.systime.day_10; |
| 166 | case 9: |
| 167 | return rtc.systime.month_1; |
| 168 | case 10: |
| 169 | return rtc.systime.month_10; |
| 170 | case 11: |
| 171 | return rtc.systime.year_1; |
| 172 | case 12: |
| 173 | return rtc.systime.year_10; |
| 174 | case 13: |
| 175 | return rtc.mode & 0x0f; |
| 176 | } |
| 177 | } |
| 178 | else // BANK 1 selected |
| 179 | { |
| 180 | switch(offset) |
| 181 | { |
| 182 | case 0: // CLKOUT |
| 183 | return rtc.clkout & 0x07; |
| 184 | case 1: // Adjustment (always returns 0) |
| 185 | return 0; |
| 186 | case 2: |
| 187 | return rtc.alarm.min_1; |
| 188 | case 3: |
| 189 | return rtc.alarm.min_10; |
| 190 | case 4: |
| 191 | return rtc.alarm.hour_1; |
| 192 | case 5: |
| 193 | return rtc.alarm.hour_10; |
| 194 | case 6: |
| 195 | return rtc.alarm.dayofweek; |
| 196 | case 7: |
| 197 | return rtc.alarm.day_1; |
| 198 | case 8: |
| 199 | return rtc.alarm.day_10; |
| 200 | case 10: // 12/24 hour selection (returns AM/PM?) |
| 201 | return 0; |
| 202 | case 11: // Leap year |
| 203 | return rtc.leap; |
| 204 | case 13: |
| 205 | return rtc.mode & 0x0f; |
| 206 | default: |
| 207 | return 0; |
| 208 | } |
| 209 | } |
| 210 | return 0; |
| 211 | } |
| 212 | |
| 213 | void rp5c15_write(int offset, int data, UINT16 mem_mask) |
| 214 | { |
| 215 | if(offset == 13) |
| 216 | { |
| 217 | rtc.mode = data & 0x0f; |
| 218 | return; |
| 219 | } |
| 220 | if((rtc.mode & 0x01) == 0x00) // BANK 0 selected |
| 221 | { |
| 222 | switch(offset) |
| 223 | { |
| 224 | case 0: |
| 225 | rtc.systime.sec_1 = data & 0x0f; |
| 226 | break; |
| 227 | case 1: |
| 228 | rtc.systime.sec_10 = data & 0x0f; |
| 229 | break; |
| 230 | case 2: |
| 231 | rtc.systime.min_1 = data & 0x0f; |
| 232 | break; |
| 233 | case 3: |
| 234 | rtc.systime.min_10 = data & 0x0f; |
| 235 | break; |
| 236 | case 4: |
| 237 | rtc.systime.hour_1 = data & 0x0f; |
| 238 | break; |
| 239 | case 5: |
| 240 | rtc.systime.hour_10 = data & 0x0f; |
| 241 | break; |
| 242 | case 6: |
| 243 | rtc.systime.dayofweek = data & 0x0f; |
| 244 | break; |
| 245 | case 7: |
| 246 | rtc.systime.day_1 = data & 0x0f; |
| 247 | break; |
| 248 | case 8: |
| 249 | rtc.systime.day_10 = data & 0x0f; |
| 250 | break; |
| 251 | case 9: |
| 252 | rtc.systime.month_1 = data & 0x0f; |
| 253 | break; |
| 254 | case 10: |
| 255 | rtc.systime.month_10 = data & 0x0f; |
| 256 | break; |
| 257 | case 11: |
| 258 | rtc.systime.year_1 = data & 0x0f; |
| 259 | break; |
| 260 | case 12: |
| 261 | rtc.systime.year_10 = data & 0x0f; |
| 262 | break; |
| 263 | } |
| 264 | } |
| 265 | else // BANK 1 selected |
| 266 | { |
| 267 | switch(offset) |
| 268 | { |
| 269 | case 0: |
| 270 | rtc.clkout = data & 0x07; |
| 271 | break; |
| 272 | case 1: // Adjustment (resets seconds to 0, increases minute by 1 if seconds are > 30 |
| 273 | if(rtc.systime.sec_10 >= 3) |
| 274 | rtc_add_minute(); |
| 275 | rtc.systime.sec_1 = 0; |
| 276 | rtc.systime.sec_10 = 0; |
| 277 | break; |
| 278 | case 2: |
| 279 | rtc.alarm.min_1 = data & 0x0f; |
| 280 | break; |
| 281 | case 3: |
| 282 | rtc.alarm.min_10 = data & 0x0f; |
| 283 | break; |
| 284 | case 4: |
| 285 | rtc.alarm.hour_1 = data & 0x0f; |
| 286 | break; |
| 287 | case 5: |
| 288 | rtc.alarm.hour_10 = data & 0x0f; |
| 289 | break; |
| 290 | case 6: |
| 291 | rtc.alarm.dayofweek = data & 0x0f; |
| 292 | break; |
| 293 | case 7: |
| 294 | rtc.alarm.day_1 = data & 0x0f; |
| 295 | break; |
| 296 | case 8: |
| 297 | rtc.alarm.day_10 = data & 0x0f; |
| 298 | break; |
| 299 | case 10: // 12/24 hour clock selection |
| 300 | rtc.hour24 = data; |
| 301 | break; |
| 302 | |
| 303 | } |
| 304 | } |
| 305 | } |
| 306 | |
| 307 | void rtc_add_second() // add one second to current time |
| 308 | { |
| 309 | if((rtc.mode & 0x08) == 0x00) // if timer is not enabled |
| 310 | return; |
| 311 | rtc.systime.sec_1++; |
| 312 | if(rtc.systime.sec_1 < 10) |
| 313 | return; |
| 314 | rtc.systime.sec_1 = 0; |
| 315 | rtc.systime.sec_10++; |
| 316 | if(rtc.systime.sec_10 < 6) |
| 317 | return; |
| 318 | rtc.systime.sec_10 = 0; |
| 319 | rtc_add_minute(); |
| 320 | } |
| 321 | |
| 322 | void rtc_add_minute() |
| 323 | { |
| 324 | rtc.systime.min_1++; |
| 325 | if(rtc.systime.min_1 < 10) |
| 326 | return; |
| 327 | rtc.systime.min_1 = 0; |
| 328 | rtc.systime.min_10++; |
| 329 | if(rtc.systime.min_10 < 6) |
| 330 | return; |
| 331 | rtc.systime.min_10 = 0; |
| 332 | rtc.systime.hour_1++; |
| 333 | if(rtc.systime.hour_1 < 10 && rtc.systime.hour_10 < 2) |
| 334 | return; |
| 335 | if(rtc.systime.hour_10 < 3 && rtc.systime.hour_1 < 4) |
| 336 | return; |
| 337 | rtc.systime.hour_1 = 0; |
| 338 | rtc.systime.hour_10++; |
| 339 | if(rtc.systime.hour_10 < 3) |
| 340 | return; |
| 341 | rtc.systime.hour_10 = 0; |
| 342 | rtc_add_day(); |
| 343 | } |
| 344 | |
| 345 | void rtc_add_day() |
| 346 | { |
| 347 | int d,m; |
| 348 | |
| 349 | rtc.systime.dayofweek++; |
| 350 | if(rtc.systime.dayofweek >= 7) |
| 351 | rtc.systime.dayofweek = 0; |
| 352 | d = (rtc.systime.day_10 << 4) | rtc.systime.day_1; |
| 353 | m = (rtc.systime.month_10 << 4) | rtc.systime.month_1; |
| 354 | d++; |
| 355 | if((d & 0x0f) >= 10) |
| 356 | { |
| 357 | d &= 0xf0; |
| 358 | d += 0x10; |
| 359 | } |
| 360 | rtc.systime.day_1 = (d & 0x0f); |
| 361 | rtc.systime.day_10 = (d & 0xf0) >> 4; |
| 362 | switch(m) |
| 363 | { |
| 364 | case 1: |
| 365 | case 3: |
| 366 | case 5: |
| 367 | case 7: |
| 368 | case 8: |
| 369 | case 0x10: |
| 370 | case 0x12: |
| 371 | if(d > 0x31) |
| 372 | { |
| 373 | rtc.systime.day_1 = 1; |
| 374 | rtc.systime.day_10 = 0; |
| 375 | rtc_add_month(); |
| 376 | } |
| 377 | break; |
| 378 | case 4: |
| 379 | case 6: |
| 380 | case 9: |
| 381 | case 11: |
| 382 | if(d > 0x30) |
| 383 | { |
| 384 | rtc.systime.day_1 = 1; |
| 385 | rtc.systime.day_10 = 0; |
| 386 | rtc_add_month(); |
| 387 | } |
| 388 | break; |
| 389 | case 2: |
| 390 | if(rtc.leap == 0) // this is a leap year |
| 391 | { |
| 392 | if(d > 0x29) |
| 393 | { |
| 394 | rtc.systime.day_1 = 1; |
| 395 | rtc.systime.day_10 = 0; |
| 396 | rtc_add_month(); |
| 397 | } |
| 398 | } |
| 399 | else // not a leap year |
| 400 | { |
| 401 | if(d > 0x28) |
| 402 | { |
| 403 | rtc.systime.day_1 = 1; |
| 404 | rtc.systime.day_10 = 0; |
| 405 | rtc_add_month(); |
| 406 | } |
| 407 | } |
| 408 | break; |
| 409 | } |
| 410 | } |
| 411 | |
| 412 | void rtc_add_month() |
| 413 | { |
| 414 | rtc.systime.month_1++; |
| 415 | if(rtc.systime.month_1 < 10 && rtc.systime.month_10 < 1) |
| 416 | return; |
| 417 | if(rtc.systime.month_1 < 3 && rtc.systime.month_10 < 2) |
| 418 | return; |
| 419 | rtc.systime.month_1 = 0; |
| 420 | rtc.systime.month_10++; |
| 421 | if(rtc.systime.month_10 < 2) |
| 422 | return; |
| 423 | rtc.systime.month_1 = 1; |
| 424 | rtc.systime.month_10 = 0; |
| 425 | rtc.systime.year_1++; |
| 426 | if(rtc.systime.year_1 < 10) |
| 427 | return; |
| 428 | rtc.systime.year_1 = 0; |
| 429 | rtc.systime.year_10++; |
| 430 | if(rtc.systime.year_10 < 10) |
| 431 | return; |
| 432 | rtc.systime.year_10 = 0; |
| 433 | } |
| 434 | |
| 435 | READ16_HANDLER(rp5c15_r) { return rp5c15_read(offset,mem_mask); } |
| 436 | WRITE16_HANDLER(rp5c15_w) { return rp5c15_write(offset,data,mem_mask); } |
src/mess/drivers/x68k.c
| r801 | r802 | |
| 135 | 135 | #include "sound/okim6295.h" |
| 136 | 136 | #include "machine/8530scc.h" |
| 137 | 137 | #include "machine/hd63450.h" |
| 138 | #include "machine/rp5c15.h" |
| 138 | 139 | #include "devices/basicdsk.h" |
| 139 | 140 | #include "includes/x68k.h" |
| 140 | 141 | |
| r801 | r802 | |
| 1109 | 1110 | |
| 1110 | 1111 | READ16_HANDLER( x68k_rtc_r ) |
| 1111 | 1112 | { |
| 1112 | | if(offset < 13) |
| 1113 | | { |
| 1114 | | if(sys.rtc.mode & 0x01) |
| 1115 | | return sys.rtc.regbank1[offset]; |
| 1116 | | else |
| 1117 | | return sys.rtc.regbank0[offset]; |
| 1118 | | } |
| 1119 | | else |
| 1120 | | { |
| 1121 | | if(offset == 0x13) |
| 1122 | | return sys.rtc.mode & 0x0f; |
| 1123 | | // logerror("RTC: [%08x] read from offset %i\n",activecpu_get_pc(),offset); |
| 1124 | | return 0xff; |
| 1125 | | } |
| 1113 | return rp5c15_r(offset,mem_mask); |
| 1126 | 1114 | } |
| 1127 | 1115 | |
| 1128 | 1116 | WRITE16_HANDLER( x68k_rtc_w ) |
| 1129 | 1117 | { |
| 1130 | | if(offset < 13) |
| 1118 | rp5c15_w(offset,data,mem_mask); |
| 1119 | } |
| 1120 | |
| 1121 | void x68k_rtc_alarm_irq(int state) |
| 1122 | { |
| 1123 | if(sys.mfp.aer & 0x01) |
| 1131 | 1124 | { |
| 1132 | | if(sys.rtc.mode & 0x01) |
| 1133 | | sys.rtc.regbank1[offset] = data; |
| 1134 | | else |
| 1135 | | sys.rtc.regbank0[offset] = data; |
| 1125 | if(state == 1) |
| 1126 | mfp_trigger_irq(MFP_IRQ_GPIP0); // RTC ALARM |
| 1136 | 1127 | } |
| 1137 | 1128 | else |
| 1138 | 1129 | { |
| 1139 | | switch(offset) |
| 1140 | | { |
| 1141 | | case 14: // MODE |
| 1142 | | sys.rtc.mode = data & 0x0f; |
| 1143 | | break; |
| 1144 | | case 15: // TEST (will usually always be all 0) |
| 1145 | | sys.rtc.test = data & 0x0f; |
| 1146 | | break; |
| 1147 | | case 16: // RESET |
| 1148 | | sys.rtc.reset = data & 0x0f; |
| 1149 | | // TODO: clocking up the RTC counter. |
| 1150 | | break; |
| 1151 | | default: |
| 1152 | | // logerror("RTC: [%08x] write to invalid offset %i\n",activecpu_get_pc(),offset); |
| 1153 | | break; |
| 1154 | | } |
| 1130 | if(state == 0) |
| 1131 | mfp_trigger_irq(MFP_IRQ_GPIP0); // RTC ALARM |
| 1155 | 1132 | } |
| 1156 | 1133 | } |
| 1157 | 1134 | |
| r801 | r802 | |
| 1496 | 1473 | NULL//x68k_scc_ack |
| 1497 | 1474 | }; |
| 1498 | 1475 | |
| 1476 | static struct rp5c15_interface rtc_intf = |
| 1477 | { |
| 1478 | x68k_rtc_alarm_irq |
| 1479 | }; |
| 1480 | |
| 1499 | 1481 | INPUT_PORTS_START( x68000 ) |
| 1500 | 1482 | PORT_START_TAG( "joy1" ) |
| 1501 | 1483 | PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP) PORT_CODE(JOYCODE_Y_UP_SWITCH) PORT_PLAYER(1) |
| r801 | r802 | |
| 1768 | 1750 | info->unload = device_unload_x68k_floppy; |
| 1769 | 1751 | break; |
| 1770 | 1752 | case DEVINFO_STR_FILE_EXTENSIONS: |
| 1771 | | strcpy(info->s = device_temp_str(), "xdf,hdm,dim"); |
| 1753 | strcpy(info->s = device_temp_str(), "xdf,hdm,2hd,dim"); |
| 1772 | 1754 | break; |
| 1773 | 1755 | default: |
| 1774 | 1756 | legacybasicdsk_device_getinfo(devclass, state, info); |
| r801 | r802 | |
| 1873 | 1855 | nec765_reset(0); |
| 1874 | 1856 | mfp_init(); |
| 1875 | 1857 | scc_init(&scc_interface); |
| 1858 | rp5c15_init(&rtc_intf); |
| 1876 | 1859 | |
| 1877 | 1860 | cpunum_set_irq_callback(0, x68k_int_ack); |
| 1878 | 1861 | |
| r801 | r802 | |
| 1927 | 1910 | |
| 1928 | 1911 | SYSTEM_CONFIG_START(x68000) |
| 1929 | 1912 | CONFIG_DEVICE(x68k_floppy_getinfo) |
| 1913 | CONFIG_RAM(0x100000) |
| 1914 | CONFIG_RAM(0x200000) |
| 1930 | 1915 | CONFIG_RAM_DEFAULT(0x400000) // 4MB - should be enough for most things |
| 1916 | CONFIG_RAM(0x800000) |
| 1917 | CONFIG_RAM(0xc00000) // 12MB - maximum possible |
| 1931 | 1918 | SYSTEM_CONFIG_END |
| 1932 | 1919 | |
| 1933 | 1920 | ROM_START( x68000 ) |