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taitof3 timer thing for faster music in ridingf

This commit is contained in:
dinkc64 2018-02-02 01:19:27 +00:00
parent 1c3f790e8a
commit 5b9d1dedb1
3 changed files with 20 additions and 3 deletions
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8
src/burn/drv/taito/d_taitof3.cpp
View File

@ -1859,7 +1859,13 @@ STD_ROM_FN(ridingf)
static INT32 ridingfInit()
{
return DrvInit(NULL, f3_12bit_palette_update, 1, RIDINGF, 1, 0x417FE4);
INT32 rc = DrvInit(NULL, f3_12bit_palette_update, 1, RIDINGF, 1, 0x417FE4);
if (!rc) {
TaitoF3SoundIRQConfig(1);
}
return rc;
}
struct BurnDriver BurnDrvRidingf = {

14
src/burn/drv/taito/taitof3_snd.cpp
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@ -6,6 +6,7 @@
#include "es5506.h"
#include "mb87078.h"
#include "taito.h"
#include "taitof3_snd.h"
// Allocate these externally!
UINT8 *TaitoF3SoundRom = NULL;
@ -33,10 +34,12 @@ static UINT32 TaitoES5510DOLLatch;
static UINT32 TaitoES5510DILLatch;
static UINT32 TaitoES5510DADRLatch;
static UINT8 TaitoES5510RAMSelect;
static UINT32 TaitoF3SoundIRQhz;
#define IRQ_TRIGGER_OFF 0
#define IRQ_TRIGGER_ONCE 1
#define IRQ_TRIGGER_PULSE 2
#define IRQ_DEFAULT_HZ 16000000
static INT32 TaitoF3CpuNum = 2;
@ -169,7 +172,7 @@ static void __fastcall TaitoF3Sound68KWriteByte(UINT32 a, UINT8 d)
//bprintf(PRINT_NORMAL, _T("counter is %04x (/16), so interrupt once in %d cycles\n"), TaitoF3Counter, (16000000 / 2000000) * TaitoF3Counter * 16);
TaitoF3SoundTriggerIRQCyclesMode = IRQ_TRIGGER_ONCE;
TaitoF3SoundTriggerIRQCycleCounter = 0;
TaitoF3SoundTriggerIRQCycles = (16000000 / 2000000) * TaitoF3Counter * 16;
TaitoF3SoundTriggerIRQCycles = (TaitoF3SoundIRQhz / 2000000) * TaitoF3Counter * 16;
return;
}
@ -185,7 +188,7 @@ static void __fastcall TaitoF3Sound68KWriteByte(UINT32 a, UINT8 d)
//bprintf(PRINT_NORMAL, _T("counter is %04x, so interrupt every %d cycles\n"), TaitoF3Counter, (16000000 / 2000000) * TaitoF3Counter);
TaitoF3SoundTriggerIRQCyclesMode = IRQ_TRIGGER_PULSE;
TaitoF3SoundTriggerIRQPulseCycleCounter = 0;
TaitoF3SoundTriggerIRQPulseCycles = (16000000 / 2000000) * TaitoF3Counter;
TaitoF3SoundTriggerIRQPulseCycles = (TaitoF3SoundIRQhz / 2000000) * TaitoF3Counter;
return;
}
@ -349,6 +352,13 @@ void TaitoF3SoundInit(INT32 cpunum)
ES5505Init(30476100/2, TaitoF3ES5506Rom, TaitoF3ES5506Rom, NULL);
mb87078_init(TaitoF3VolumeCallback);
TaitoF3SoundIRQConfig(0);
}
void TaitoF3SoundIRQConfig(INT32 bAlternateHz)
{
TaitoF3SoundIRQhz = (!bAlternateHz) ? IRQ_DEFAULT_HZ : (30476100 / 2);
}
void TaitoF3CpuUpdate(INT32 nInterleave, INT32 nCurrentSlice)

1
src/burn/drv/taito/taitof3_snd.h
View File

@ -11,6 +11,7 @@ extern double TaitoF3VolumeOffset; // Games set their own volume (mb87078), but
void TaitoF3SoundReset();
void TaitoF3SoundExit();
void TaitoF3SoundInit(INT32 cpunum); // which cpu?
void TaitoF3SoundIRQConfig(INT32 bAlternateHz); // for ridingf (faster music)
void TaitoF3CpuUpdate(INT32 nInterleave, INT32 nCurrentSlice);
void TaitoF3SoundUpdate(INT16 *pDest, INT32 nLen);