\r
#include "src/lib/16_sd.h"\r
\r
-//static void (interrupt *old_irq0)();\r
-void interrupt (*old_irq0)(void);\r
+static void interrupt (*t0OldService)(void);\r
\r
void opl2out(word reg, word data)\r
{\r
opl2out(opCellNum, ins->Feedback);\r
} /* End of FMSetVoice */\r
\r
+\r
+//newer sd\r
+\r
+\r
+struct glob_game_vars *ggvv;\r
+// WARNING: subroutine call in interrupt handler. make sure you compile with -zu flag for large/compact memory models\r
+void interrupt SDL_irq0()\r
+{\r
+ ggvv->ca.sd.irq0_ticks++;\r
+ if ((ggvv->ca.sd.irq0_cnt += ggvv->ca.sd.irq0_add) >= ggvv->ca.sd.irq0_max) {\r
+ ggvv->ca.sd.irq0_cnt -= ggvv->ca.sd.irq0_max;\r
+ t0OldService();\r
+ }\r
+ else {\r
+ p8259_OCW2(0,P8259_OCW2_NON_SPECIFIC_EOI);\r
+ }\r
+}\r
+\r
void SD_Initimf(global_game_variables_t *gvar)\r
{\r
if (!init_adlib()) {\r
return;\r
}\r
\r
- gvar->ca.sd.irq0_ticks=\r
- //gvar->ca.sd.irq0_cnt=\r
- //gvar->ca.sd.irq0_add=\r
- gvar->ca.sd.imf_delay_countdown=\r
- gvar->ca.sd.irq0_max=0;\r
+ gvar->ca.sd.imf_delay_countdown=0;\r
gvar->ca.sd.imf_music=\r
gvar->ca.sd.imf_play_ptr=\r
gvar->ca.sd.imf_music_end=NULL;\r
+\r
+ SD_adlib_shut_up();\r
+ shutdown_adlib_opl3(); // NTS: Apparently the music won't play otherwise\r
+}\r
+\r
+void SD_imf_reset_music(global_game_variables_t *gvar)\r
+{\r
+ gvar->ca.sd.imf_music = gvar->ca.sd.imf_play_ptr = gvar->ca.sd.imf_music_end = NULL;\r
+ gvar->ca.sd.imf_delay_countdown = 0;\r
+}\r
+\r
+void SD_StartupTimer(global_game_variables_t *gvar)\r
+{\r
+ gvar->ca.sd.irq0_ticks=\r
gvar->ca.sd.irq0_cnt = 0;\r
gvar->ca.sd.irq0_add = 182;\r
gvar->ca.sd.irq0_max = 1000; /* about 18.2Hz */\r
+ gvar->ca.sd.tickrate = 700;\r
\r
- SD_adlib_shut_up();\r
- shutdown_adlib_opl3(); // NTS: Apparently the music won't play otherwise\r
+ write_8254_system_timer(T8254_REF_CLOCK_HZ / gvar->ca.sd.tickrate);\r
+ t0OldService = _dos_getvect(8); /*IRQ0*/\r
+ _dos_setvect(8,SDL_irq0);\r
+\r
+ _cli();\r
+ gvar->ca.sd.irq0_ticks = gvar->ca.sd.ptick = 0;\r
+ _sti();\r
+}\r
+\r
+void SD_ShutdownTimer()\r
+{\r
+ _dos_setvect(8,t0OldService);\r
}\r
\r
void SD_imf_free_music(global_game_variables_t *gvar)\r
{\r
-// if (gvar->ca.sd.imf_music) free(gvar->ca.sd.imf_music);\r
+#ifndef SD_USESCAMMPM\r
+ if (gvar->ca.sd.imf_music) free(gvar->ca.sd.imf_music);\r
+#else\r
MM_FreePtr(MEMPTRCONV gvar->ca.audiosegs[0], gvar); //TODO make behave like id engine\r
- gvar->ca.sd.imf_music = gvar->ca.sd.imf_play_ptr = gvar->ca.sd.imf_music_end = NULL;\r
- gvar->ca.sd.imf_delay_countdown = 0;\r
+#endif\r
+ SD_imf_reset_music(gvar);\r
}\r
\r
int SD_imf_load_music(const char *path, global_game_variables_t *gvar)\r
unsigned char buf[8];\r
int fd;\r
\r
+#ifndef SD_USESCAMMPM\r
SD_imf_free_music(gvar);\r
+#else\r
+ SD_imf_reset_music(gvar);\r
+#endif\r
\r
fd = open(path,O_RDONLY|O_BINARY);\r
if (fd < 0) return 0;\r
}\r
len -= len & 3;\r
\r
+#ifndef SD_USESCAMMPM\r
+ gvar->ca.sd.imf_music = malloc(len);\r
+#else\r
MM_GetPtr(MEMPTRCONV gvar->ca.audiosegs[0],len, gvar);\r
gvar->ca.sd.imf_music = (struct imf_entry *)gvar->ca.audiosegs[0];\r
+#endif\r
if (gvar->ca.sd.imf_music == NULL) {\r
close(fd);\r
return 0;\r
return 1;\r
}\r
\r
-struct glob_game_vars *ggvv;\r
-// WARNING: subroutine call in interrupt handler. make sure you compile with -zu flag for large/compact memory models\r
-void interrupt irq0()\r
-{\r
- ggvv->ca.sd.irq0_ticks++;\r
- if ((ggvv->ca.sd.irq0_cnt += ggvv->ca.sd.irq0_add) >= ggvv->ca.sd.irq0_max) {\r
- ggvv->ca.sd.irq0_cnt -= ggvv->ca.sd.irq0_max;\r
- old_irq0();\r
- }\r
- else {\r
- p8259_OCW2(0,P8259_OCW2_NON_SPECIFIC_EOI);\r
- }\r
-}\r
-\r
void SD_imf_tick(global_game_variables_t *gvar)\r
{\r
if (gvar->ca.sd.imf_delay_countdown == 0) {\r