+u32 ym2612_read_local_68k(void)\r
+{\r
+ int xcycles = cycles_68k_to_z80(SekCyclesDone()) << 8;\r
+\r
+ ym2612_read_local();\r
+\r
+ elprintf(EL_YMTIMER, "timer 68k read %i, sched %i, %i @ %i|%i", ym2612.OPN.ST.status,\r
+ timer_a_next_oflow>>8, timer_b_next_oflow>>8, xcycles >> 8, (xcycles >> 8) / 228);\r
+ return ym2612.OPN.ST.status;\r
+}\r
+\r
+void ym2612_pack_state(void)\r
+{\r
+ // timers are saved as tick counts, in 16.16 int format\r
+ int tac, tat = 0, tbc, tbt = 0;\r
+ tac = 1024 - ym2612.OPN.ST.TA;\r
+ tbc = 256 - ym2612.OPN.ST.TB;\r
+ if (timer_a_next_oflow != TIMER_NO_OFLOW)\r
+ tat = (int)((double)(timer_a_step - timer_a_next_oflow) / (double)timer_a_step * tac * 65536);\r
+ if (timer_b_next_oflow != TIMER_NO_OFLOW)\r
+ tbt = (int)((double)(timer_b_step - timer_b_next_oflow) / (double)timer_b_step * tbc * 65536);\r
+ elprintf(EL_YMTIMER, "save: timer a %i/%i", tat >> 16, tac);\r
+ elprintf(EL_YMTIMER, "save: timer b %i/%i", tbt >> 16, tbc);\r
+\r
+#ifdef __GP2X__\r
+ if (PicoOpt & POPT_EXT_FM)\r
+ YM2612PicoStateSave2_940(tat, tbt);\r
+ else\r
+#endif\r
+ YM2612PicoStateSave2(tat, tbt);\r
+}\r
+\r
+void ym2612_unpack_state(void)\r
+{\r
+ int i, ret, tac, tat, tbc, tbt;\r
+ YM2612PicoStateLoad();\r
+\r
+ // feed all the registers and update internal state\r
+ for (i = 0x20; i < 0xA0; i++) {\r
+ ym2612_write_local(0, i, 0);\r
+ ym2612_write_local(1, ym2612.REGS[i], 0);\r
+ }\r
+ for (i = 0x30; i < 0xA0; i++) {\r
+ ym2612_write_local(2, i, 0);\r
+ ym2612_write_local(3, ym2612.REGS[i|0x100], 0);\r
+ }\r
+ for (i = 0xAF; i >= 0xA0; i--) { // must apply backwards\r
+ ym2612_write_local(2, i, 0);\r
+ ym2612_write_local(3, ym2612.REGS[i|0x100], 0);\r
+ ym2612_write_local(0, i, 0);\r
+ ym2612_write_local(1, ym2612.REGS[i], 0);\r
+ }\r
+ for (i = 0xB0; i < 0xB8; i++) {\r
+ ym2612_write_local(0, i, 0);\r
+ ym2612_write_local(1, ym2612.REGS[i], 0);\r
+ ym2612_write_local(2, i, 0);\r
+ ym2612_write_local(3, ym2612.REGS[i|0x100], 0);\r
+ }\r
+\r
+#ifdef __GP2X__\r
+ if (PicoOpt & POPT_EXT_FM)\r
+ ret = YM2612PicoStateLoad2_940(&tat, &tbt);\r
+ else\r
+#endif\r
+ ret = YM2612PicoStateLoad2(&tat, &tbt);\r
+ if (ret != 0) {\r
+ elprintf(EL_STATUS, "old ym2612 state");\r
+ return; // no saved timers\r
+ }\r
+\r
+ tac = (1024 - ym2612.OPN.ST.TA) << 16;\r
+ tbc = (256 - ym2612.OPN.ST.TB) << 16;\r
+ if (ym2612.OPN.ST.mode & 1)\r
+ timer_a_next_oflow = (int)((double)(tac - tat) / (double)tac * timer_a_step);\r
+ else\r
+ timer_a_next_oflow = TIMER_NO_OFLOW;\r
+ if (ym2612.OPN.ST.mode & 2)\r
+ timer_b_next_oflow = (int)((double)(tbc - tbt) / (double)tbc * timer_b_step);\r
+ else\r
+ timer_b_next_oflow = TIMER_NO_OFLOW;\r
+ elprintf(EL_YMTIMER, "load: %i/%i, timer_a_next_oflow %i", tat>>16, tac>>16, timer_a_next_oflow >> 8);\r
+ elprintf(EL_YMTIMER, "load: %i/%i, timer_b_next_oflow %i", tbt>>16, tbc>>16, timer_b_next_oflow >> 8);\r
+}\r
+\r