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1.1 root 1: /*
2: Hatari - rtc.c
3:
4: This file is distributed under the GNU Public License, version 2 or at
5: your option any later version. Read the file gpl.txt for details.
6:
7: Mega-ST real time clock.
8: There is probably a more efficient way to do it, such as using directly a
9: timer in ram instead of calling localtime for each function. For now it will
10: show that it works, at least...
11:
12: In fact these mappings seems to force the gem to ask the IKBD for the real
13: time (seconds units). See ikbd.c for the time returned by the IKBD.
14: */
1.1.1.7 ! root 15: const char Rtc_fileid[] = "Hatari rtc.c : " __DATE__ " " __TIME__;
1.1 root 16:
17: #include <time.h>
18:
19: #include "main.h"
1.1.1.4 root 20: #include "ioMem.h"
1.1 root 21: #include "rtc.h"
22:
23:
1.1.1.5 root 24: static bool rtc_bank; /* RTC bank select (0=normal, 1=configuration(?)) */
1.1 root 25: static Sint8 fake_am, fake_amz;
26:
27:
28: /*-----------------------------------------------------------------------*/
1.1.1.4 root 29: /**
30: * Read seconds units.
31: */
1.1 root 32: void Rtc_SecondsUnits_ReadByte(void)
33: {
1.1.1.4 root 34: struct tm *SystemTime;
35: time_t nTimeTicks;
1.1 root 36:
1.1.1.4 root 37: /* Get system time */
38: nTimeTicks = time(NULL);
39: SystemTime = localtime(&nTimeTicks);
40: IoMem[0xfffc21] = SystemTime->tm_sec % 10;
1.1 root 41: }
42:
43:
44: /*-----------------------------------------------------------------------*/
1.1.1.4 root 45: /**
46: * Read seconds tens.
47: */
1.1 root 48: void Rtc_SecondsTens_ReadByte(void)
49: {
1.1.1.4 root 50: struct tm *SystemTime;
51: time_t nTimeTicks;
1.1 root 52:
1.1.1.4 root 53: /* Get system time */
54: nTimeTicks = time(NULL);
55: SystemTime = localtime(&nTimeTicks);
56: IoMem[0xfffc23] = SystemTime->tm_sec / 10;
1.1 root 57: }
58:
59:
60: /*-----------------------------------------------------------------------*/
1.1.1.4 root 61: /**
62: * Read minutes units.
63: */
1.1 root 64: void Rtc_MinutesUnits_ReadByte(void)
65: {
1.1.1.4 root 66: if (rtc_bank)
67: {
68: IoMem[0xfffc25] = fake_am;
69: }
70: else
71: {
72: struct tm *SystemTime;
73: time_t nTimeTicks;
74:
75: /* Get system time */
76: nTimeTicks = time(NULL);
77: SystemTime = localtime(&nTimeTicks);
78: IoMem[0xfffc25] = SystemTime->tm_min % 10;
79: }
1.1 root 80: }
81:
82:
83: /*-----------------------------------------------------------------------*/
1.1.1.4 root 84: /**
85: * Write minutes units.
86: */
1.1 root 87: void Rtc_MinutesUnits_WriteByte(void)
88: {
1.1.1.4 root 89: /* TOS 1.0x uses this... */
90: if (rtc_bank)
91: fake_am = ((IoMem[0xfffc25] & 0x0f) | 0xf0);
92: /* else ignore */
1.1 root 93: }
94:
95:
96: /*-----------------------------------------------------------------------*/
1.1.1.4 root 97: /**
98: * Read minutes tens.
99: */
1.1 root 100: void Rtc_MinutesTens_ReadByte(void)
101: {
1.1.1.4 root 102: if (rtc_bank)
103: {
104: IoMem[0xfffc27] = fake_amz;
105: }
106: else
107: {
108: struct tm *SystemTime;
109: time_t nTimeTicks;
110:
111: /* Get system time */
112: nTimeTicks = time(NULL);
113: SystemTime = localtime(&nTimeTicks);
114: IoMem[0xfffc27] = SystemTime->tm_min / 10;
115: }
1.1 root 116: }
117:
118:
119: /*-----------------------------------------------------------------------*/
1.1.1.4 root 120: /**
121: * Write minutes tens.
122: */
1.1 root 123: void Rtc_MinutesTens_WriteByte(void)
124: {
1.1.1.4 root 125: /* TOS 1.0x uses this... */
126: if (rtc_bank)
127: fake_amz = ((IoMem[0xfffc27] & 0x0f) | 0xf0);
128: /* else ignore */
1.1 root 129: }
130:
131:
132: /*-----------------------------------------------------------------------*/
1.1.1.4 root 133: /**
134: * Read hours units.
135: */
1.1 root 136: void Rtc_HoursUnits_ReadByte(void)
137: {
1.1.1.4 root 138: struct tm *SystemTime;
139: time_t nTimeTicks;
1.1 root 140:
1.1.1.4 root 141: /* Get system time */
142: nTimeTicks = time(NULL);
143: SystemTime = localtime(&nTimeTicks);
144: IoMem[0xfffc29] = SystemTime->tm_hour % 10;
1.1 root 145: }
146:
147:
148: /*-----------------------------------------------------------------------*/
1.1.1.4 root 149: /**
150: * Read hours tens.
151: */
1.1 root 152: void Rtc_HoursTens_ReadByte(void)
153: {
1.1.1.4 root 154: struct tm *SystemTime;
155: time_t nTimeTicks;
1.1 root 156:
1.1.1.4 root 157: /* Get system time */
158: nTimeTicks = time(NULL);
159: SystemTime = localtime(&nTimeTicks);
160: IoMem[0xfffc2b] = SystemTime->tm_hour / 10;
1.1 root 161: }
162:
163:
164: /*-----------------------------------------------------------------------*/
1.1.1.4 root 165: /**
166: * Read weekday.
167: */
1.1 root 168: void Rtc_Weekday_ReadByte(void)
169: {
1.1.1.4 root 170: struct tm *SystemTime;
171: time_t nTimeTicks;
1.1 root 172:
1.1.1.4 root 173: /* Get system time */
174: nTimeTicks = time(NULL);
175: SystemTime = localtime(&nTimeTicks);
176: IoMem[0xfffc2d] = SystemTime->tm_wday;
1.1 root 177: }
178:
179:
180: /*-----------------------------------------------------------------------*/
1.1.1.4 root 181: /**
182: * Read day units.
183: */
1.1 root 184: void Rtc_DayUnits_ReadByte(void)
185: {
1.1.1.4 root 186: struct tm *SystemTime;
187: time_t nTimeTicks;
1.1 root 188:
1.1.1.4 root 189: /* Get system time */
190: nTimeTicks = time(NULL);
191: SystemTime = localtime(&nTimeTicks);
192: IoMem[0xfffc2f] = SystemTime->tm_mday % 10;
1.1 root 193: }
194:
195:
196: /*-----------------------------------------------------------------------*/
1.1.1.4 root 197: /**
198: * Read day tens.
199: */
1.1 root 200: void Rtc_DayTens_ReadByte(void)
201: {
1.1.1.4 root 202: struct tm *SystemTime;
203: time_t nTimeTicks;
1.1 root 204:
1.1.1.4 root 205: /* Get system time */
206: nTimeTicks = time(NULL);
207: SystemTime = localtime(&nTimeTicks);
208: IoMem[0xfffc31] = SystemTime->tm_mday / 10;
1.1 root 209: }
210:
211:
212: /*-----------------------------------------------------------------------*/
1.1.1.4 root 213: /**
214: * Read month units.
215: */
1.1 root 216: void Rtc_MonthUnits_ReadByte(void)
217: {
1.1.1.4 root 218: struct tm *SystemTime;
219: time_t nTimeTicks;
1.1 root 220:
1.1.1.4 root 221: /* Get system time */
222: nTimeTicks = time(NULL);
223: SystemTime = localtime(&nTimeTicks);
224: IoMem[0xfffc33] = (SystemTime->tm_mon + 1) % 10;
1.1 root 225: }
226:
227:
228: /*-----------------------------------------------------------------------*/
1.1.1.4 root 229: /**
230: * Read month tens.
231: */
1.1 root 232: void Rtc_MonthTens_ReadByte(void)
233: {
1.1.1.4 root 234: struct tm *SystemTime;
235: time_t nTimeTicks;
1.1 root 236:
1.1.1.4 root 237: /* Get system time */
238: nTimeTicks = time(NULL);
239: SystemTime = localtime(&nTimeTicks);
240: IoMem[0xfffc35] = (SystemTime->tm_mon + 1) / 10;
1.1 root 241: }
242:
243:
244: /*-----------------------------------------------------------------------*/
1.1.1.4 root 245: /**
246: * Read year units.
247: */
1.1 root 248: void Rtc_YearUnits_ReadByte(void)
249: {
1.1.1.4 root 250: struct tm *SystemTime;
251: time_t nTimeTicks;
1.1 root 252:
1.1.1.4 root 253: /* Get system time */
254: nTimeTicks = time(NULL);
255: SystemTime = localtime(&nTimeTicks);
256: IoMem[0xfffc37] = SystemTime->tm_year % 10;
1.1 root 257: }
258:
259:
260: /*-----------------------------------------------------------------------*/
1.1.1.4 root 261: /**
262: * Read year tens.
263: */
1.1 root 264: void Rtc_YearTens_ReadByte(void)
265: {
1.1.1.4 root 266: struct tm *SystemTime;
267: time_t nTimeTicks;
1.1 root 268:
1.1.1.4 root 269: /* Get system time */
270: nTimeTicks = time(NULL);
271: SystemTime = localtime(&nTimeTicks);
272: IoMem[0xfffc39] = (SystemTime->tm_year - 80) / 10;
1.1 root 273: }
274:
275:
276: /*-----------------------------------------------------------------------*/
1.1.1.4 root 277: /**
278: * Read clock mod.
279: */
1.1 root 280: void Rtc_ClockMod_ReadByte(void)
281: {
1.1.1.4 root 282: IoMem[0xfffc3b] = ((IoMem[0xfffc3b] & 0x0f) | 0xf0);
1.1 root 283: }
284:
285:
286: /*-----------------------------------------------------------------------*/
1.1.1.4 root 287: /**
288: * Write clock mod.
289: */
1.1 root 290: void Rtc_ClockMod_WriteByte(void)
291: {
1.1.1.4 root 292: rtc_bank = IoMem[0xfffc3b] & 1;
1.1 root 293: }
294:
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