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AdLib Gold: corrected (more or less) the timer period to allow the sound card to behave more normally instead of locking up the emulator in certain instances (e.g.: jukebox of the card's DOS utilities).

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TC1995
2023-07-14 20:40:09 +02:00
parent 66c1abb2b9
commit 1bd872d43a
1 changed files with 6 additions and 3 deletions
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9
src/sound/snd_adlibgold.c
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@@ -20,7 +20,7 @@
typedef struct adgold_t {
int adgold_irq_status;
int irq, dma, hdma;
int irq, dma;
uint8_t adgold_eeprom[0x1a];
@@ -547,6 +547,7 @@ adgold_read(uint16_t addr, void *p)
temp = adgold->adgold_mma_status;
adgold->adgold_mma_status &= ~0xf3; /*JUKEGOLD expects timer status flags to auto-clear*/
adgold_update_irq_status(adgold);
picintc(1 << adgold->irq);
break;
case 5:
if (adgold->adgold_mma_addr >= 0xf)
@@ -652,7 +653,8 @@ adgold_timer_poll(void *p)
{
adgold_t *adgold = (adgold_t *) p;
timer_advance_u64(&adgold->adgold_mma_timer_count, (uint64_t) ((double) TIMER_USEC * 1.88964));
/*A small timer period will result in hangs.*/
timer_on_auto(&adgold->adgold_mma_timer_count, 4.88964);
if (adgold->adgold_midi_ctrl & 0x3f) {
if ((adgold->adgold_midi_ctrl & 0x3f) != 0x3f) {
@@ -925,7 +927,7 @@ adgold_init(const device_t *info)
adgold->adgold_eeprom[0x10] = 0xff;
adgold->adgold_eeprom[0x11] = 0x20;
adgold->adgold_eeprom[0x12] = 0x00;
adgold->adgold_eeprom[0x13] = 0xa0;
adgold->adgold_eeprom[0x13] = 0x00;
adgold->adgold_eeprom[0x14] = 0x00;
adgold->adgold_eeprom[0x15] = 0x388 / 8; /*Present at 388-38f*/
adgold->adgold_eeprom[0x16] = 0x00;
@@ -957,6 +959,7 @@ adgold_init(const device_t *info)
break;
}
adgold->adgold_eeprom[0x13] |= (adgold->dma << 3);
adgold->adgold_eeprom[0x14] |= (adgold->dma << 4);
memcpy(adgold->adgold_38x_regs, adgold->adgold_eeprom, 0x19);
adgold->vol_l = attenuation[adgold->adgold_eeprom[0x04] & 0x3f];
adgold->vol_r = attenuation[adgold->adgold_eeprom[0x05] & 0x3f];