-static void (interrupt *old_irq0)();
-/*static volatile unsigned long irq0_ticks=0;
-static volatile unsigned int irq0_cnt=0,irq0_add=0,irq0_max=0;
-
-#pragma pack(push,1)
-struct imf_entry {
- uint8_t reg,data;
- uint16_t delay;
-};
-#pragma pack(pop)
-
-static struct imf_entry* imf_music=NULL;
-static struct imf_entry* imf_play_ptr=NULL;
-static struct imf_entry* imf_music_end=NULL;
-static uint16_t imf_delay_countdown=0;
-
-#define PRINTBB {\
- printf("-------------------------------------------------------------------------------\n");\
- printf("buffer:\n");\
- printf("bigbuffer %Fp\t", gvar->ca.audiosegs[0]);\
- printf("&%Fp\n", MEMPTR gvar->ca.audiosegs[0]);\
- printf("imf_music %Fp\t", imf_music);\
- printf("&%Fp\n", imf_music);\
- printf("imf_play_ptr %Fp\t", imf_play_ptr);\
- printf("&%Fp\n", imf_play_ptr);\
- printf("imf_music_end %Fp\t", imf_music_end);\
- printf("&%Fp\n", imf_music_end);\
- printf("-------------------------------------------------------------------------------\n");\
-}
-
-void imf_free_music(global_game_variables_t *gvar) {
- if (gvar->ca.sd.imf_music) free(gvar->ca.sd.imf_music);
- MM_FreePtr(MEMPTRCONV gvar->ca.audiosegs[0], gvar);
- gvar->ca.sd.imf_music = gvar->ca.sd.imf_play_ptr = gvar->ca.sd.imf_music_end = NULL;
- gvar->ca.sd.imf_delay_countdown = 0;
-}
-
-int imf_load_music(const char *path, global_game_variables_t *gvar) {
- unsigned long len;
- unsigned char buf[8];
- int fd;
-
- imf_free_music(gvar);
-
- fd = open(path,O_RDONLY|O_BINARY);
- if (fd < 0) return 0;
-
- len = lseek(fd,0,SEEK_END);
- lseek(fd,0,SEEK_SET);
- read(fd,buf,2);
- if (buf[0] != 0 || buf[1] != 0) // type 1 IMF
- len = *((uint16_t*)buf);
- else
- lseek(fd,0,SEEK_SET);
-
- if (len == 0 || len > 65535UL) {
- close(fd);
- return 0;
- }
- len -= len & 3;
-
-// imf_music = malloc(len);
- MM_GetPtr(MEMPTRCONV gvar->ca.audiosegs[0],len, gvar);
- gvar->ca.sd.imf_music = (struct imf_entry *)gvar->ca.audiosegs[0];
- if (gvar->ca.sd.imf_music == NULL) {
- close(fd);
- return 0;
- }
- read(fd,gvar->ca.sd.imf_music,len);
- close(fd);
-
- gvar->ca.sd.imf_play_ptr = gvar->ca.sd.imf_music;
- gvar->ca.sd.imf_music_end = gvar->ca.sd.imf_music + (len >> 2UL);
-// PRINTBB;
- return 1;
-}*/
-
-// WARNING: subroutine call in interrupt handler. make sure you compile with -zu flag for large/compact memory models
-void interrupt irq0()
-{
- ggvv->ca.sd.irq0_ticks++;
- if ((ggvv->ca.sd.irq0_cnt += ggvv->ca.sd.irq0_add) >= ggvv->ca.sd.irq0_max) {
- ggvv->ca.sd.irq0_cnt -= ggvv->ca.sd.irq0_max;
- old_irq0();
- }
- else {
- p8259_OCW2(0,P8259_OCW2_NON_SPECIFIC_EOI);
- }
-}
-
-/*void imf_tick() {
- if (imf_delay_countdown == 0) {
- do {
- adlib_write(imf_play_ptr->reg,imf_play_ptr->data);
- imf_delay_countdown = imf_play_ptr->delay;
- imf_play_ptr++;
- if (imf_play_ptr == imf_music_end)
- {
- printf("replay\n");
- imf_play_ptr = imf_music;
- }
- } while (imf_delay_countdown == 0);
- }
- else {
- imf_delay_countdown--;
- }
-}
-
-void adlib_shut_up() {
- int i;
-
- memset(adlib_fm,0,sizeof(adlib_fm));
- memset(&adlib_reg_bd,0,sizeof(adlib_reg_bd));
- for (i=0;i < adlib_fm_voices;i++) {
- struct adlib_fm_operator *f;
- f = &adlib_fm[i].mod;
- f->ch_a = f->ch_b = f->ch_c = f->ch_d = 1;
- f = &adlib_fm[i].car;
- f->ch_a = f->ch_b = f->ch_c = f->ch_d = 1;
- }
-
- for (i=0;i < adlib_fm_voices;i++) {
- struct adlib_fm_operator *f;
-
- f = &adlib_fm[i].mod;
- f->mod_multiple = 1;
- f->total_level = 63 - 16;
- f->attack_rate = 15;
- f->decay_rate = 4;
- f->sustain_level = 0;
- f->release_rate = 8;
- f->f_number = 400;
- f->sustain = 1;
- f->octave = 4;
- f->key_on = 0;
-
- f = &adlib_fm[i].car;
- f->mod_multiple = 1;
- f->total_level = 63 - 16;
- f->attack_rate = 15;
- f->decay_rate = 4;
- f->sustain_level = 0;
- f->release_rate = 8;
- f->f_number = 0;
- f->sustain = 1;
- f->octave = 0;
- f->key_on = 0;
- }
-
- adlib_apply_all();
-}*/
-