The-Homebrew-Cloud/Genesis-Plus-GX
2
0
Fork 0
mirror of https://github.com/ekeeke/Genesis-Plus-GX.git synced 2025-01-12 11:19:07 +01:00
Code Issues Packages Projects Releases Wiki Activity

some fixes with YM2612

Browse Source
This commit is contained in:
ekeeke31 2008-09-15 16:28:53 +00:00
parent 1747f1b060
commit 5b48f93b49
4 changed files with 13 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
source/sound/SRC/high_qual_coeffs.h
View File

@ -30,7 +30,8 @@
** half length : 340238
** increment : 2381
*/
#ifndef NGC
#ifdef USE_ALL_SINC
static const struct slow_high_qual_coeffs_s
{ int increment ;
coeff_t coeffs [340239] ;

2
source/sound/SRC/mid_qual_coeffs.h
View File

@ -30,7 +30,7 @@
** half length : 22437
** increment : 491
*/
#ifndef NGC
#ifdef USE_ALL_SINC
static const struct slow_mid_qual_coeffs_s
{ int increment ;
coeff_t coeffs [22438] ;

2
source/sound/SRC/src_sinc.c
View File

@ -186,7 +186,7 @@ sinc_set_converter (SRC_PRIVATE *psrc, int src_enum)
temp_filter.index_inc = fastest_coeffs.increment ;
break ;
#ifndef NGC
#ifdef USE_ALL_SINC
case SRC_SINC_MEDIUM_QUALITY :
temp_filter.coeffs = slow_mid_qual_coeffs.coeffs ;
temp_filter.coeff_half_len = ARRAY_LEN (slow_mid_qual_coeffs.coeffs) - 1 ;

21
source/sound/fm.c
View File

@ -19,11 +19,10 @@
** - implemented Detune overflow (Ariel, Comix Zone, Shaq Fu, Spiderman & many others), credits to Nemesis
** - fixed SSG-EG support (Asterix, Bubba'n Six & many others), thanks to Nemesis for his tests
** - modified EG rates, tested by Nemesis on real hardware
** - fixed EG attenuation level on KEY ON (Ecco 2 splash sound)
** - implemented LFO phase update for CH3 special mode (Warlock birds, Alladin bug sound)
** - fixed Attack Rate update (Batman & Robin intro)
** - fixed attenuation level at the start of Substain (Gynoug explosions)
** - fixed EG updates when AR is maximal and/or SL minimal (Mega Turrican tracks 03,09...)
** - fixed EG when AR is maximal and/or SL minimal (Mega Turrican tracks 03,09...)
**
** 03-08-2003 Jarek Burczynski:
** - fixed YM2608 initial values (after the reset)
@ -658,7 +657,6 @@ INLINE void FM_KEYON(FM_CH *CH , int s )
if ((SLOT->ar + SLOT->ksr) < 94 /*32+62*/)
{
SLOT->state = EG_ATT; /* phase -> Attack */
SLOT->volume = MAX_ATT_INDEX; /* fix Ecco 2 splash sound */
}
else
{
@ -913,11 +911,9 @@ INLINE void advance_lfo()
INLINE void advance_eg_channel(FM_SLOT *SLOT)
{
unsigned int out;
unsigned int swap_flag = 0;
unsigned int i;
unsigned int i = 4; /* four operators per channel */
i = 4; /* four operators per channel */
do
{
/* reset SSG-EG swap flag (Eke-Eke) */
@ -999,7 +995,6 @@ INLINE void advance_eg_channel(FM_SLOT *SLOT)
if ((SLOT->ar + SLOT->ksr) < 94 /*32+62*/)
{
SLOT->volume = MAX_ATT_INDEX;
SLOT->state = EG_ATT; /* phase -> Attack */
}
else
@ -1034,7 +1029,7 @@ INLINE void advance_eg_channel(FM_SLOT *SLOT)
if ( !(ym2612.OPN.eg_cnt & ((1<<SLOT->eg_sh_rr)-1) ) )
{
if (SLOT->ssg&0x08)
/* SSG-EG affects Release Phase also (Nemesis) */
/* SSG-EG affects Release phase also (Nemesis) */
SLOT->volume += 6 * eg_inc[SLOT->eg_sel_rr + ((ym2612.OPN.eg_cnt>>SLOT->eg_sh_rr)&7)];
else
SLOT->volume += eg_inc[SLOT->eg_sel_rr + ((ym2612.OPN.eg_cnt>>SLOT->eg_sh_rr)&7)];
@ -1049,7 +1044,7 @@ INLINE void advance_eg_channel(FM_SLOT *SLOT)
}
out = (UINT32)SLOT->volume;
unsigned int out = (UINT32)SLOT->volume;
/* negate output (changes come from alternate bit, init comes from attack bit) */
if ((SLOT->ssg&0x08) && (SLOT->ssgn&2) && (SLOT->state > EG_REL))
@ -1442,7 +1437,8 @@ static void INTERNAL_TIMER_A()
if (ym2612.OPN.ST.mode & 0x04) ym2612.OPN.ST.status |= 0x01;
/* reload the counter */
ym2612.OPN.ST.TAC += ym2612.OPN.ST.TAL;
if (ym2612.OPN.ST.TAL) ym2612.OPN.ST.TAC += ym2612.OPN.ST.TAL;
else ym2612.OPN.ST.TAC = ym2612.OPN.ST.TAL;
/* CSM mode total level latch and auto key on */
if ((ym2612.OPN.ST.mode & 0xC0) == 0x80) CSMKeyControll (&(ym2612.CH[2]));
@ -1460,7 +1456,8 @@ static void INTERNAL_TIMER_B(int step)
if (ym2612.OPN.ST.mode & 0x08) ym2612.OPN.ST.status |= 0x02;
/* reload the counter */
ym2612.OPN.ST.TBC += ym2612.OPN.ST.TBL;
if (ym2612.OPN.ST.TBL) ym2612.OPN.ST.TBC += ym2612.OPN.ST.TBL;
else ym2612.OPN.ST.TBC = ym2612.OPN.ST.TBL;
}
}
}
@ -1891,7 +1888,7 @@ int YM2612ResetChip(void)
OPNWriteReg(i ,0);
OPNWriteReg(i|0x100,0);
}
for(i = 0x26 ; i >= 0x20 ; i-- ) OPNWriteMode(i,0);
for(i = 0x26 ; i >= 0x20 ; i-- ) OPNWriteMode(i,0); /* fixed (Eke-Eke) */
/* DAC mode clear */
ym2612.dacen = 0;