ShuriZma
/
BizHawk
mirror of https://github.com/TASEmulators/BizHawk.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

abusing public SVN as my own local store

This commit is contained in:
goyuken 2012-12-17 01:00:52 +00:00
parent fe6f029f39
commit 4db8ca7422
1 changed files with 24 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

33
BizHawk.Emulation/Consoles/Nintendo/NES/APU.cs
View File

@ -33,7 +33,7 @@ namespace BizHawk.Emulation.Consoles.Nintendo
public bool EnableNoise = false;
public bool EnableDMC = true;
public bool recalculate = false;
//public bool recalculate = false;
NES nes;
public APU(NES nes, APU old, bool pal)
@ -272,7 +272,8 @@ namespace BizHawk.Emulation.Consoles.Nintendo
//newsample -= env_output >> 1; //unbias
if (newsample != sample)
{
apu.recalculate = true;
//apu.recalculate = true;
apu.dlist.Add(new Delta(apu.sampleclock, 376 * (newsample - sample)));
sample = newsample;
}
}
@ -430,7 +431,8 @@ namespace BizHawk.Emulation.Consoles.Nintendo
else newsample = 0;
if (newsample != sample)
{
apu.recalculate = true;
//apu.recalculate = true;
apu.dlist.Add(new Delta(apu.sampleclock, 247 * (newsample - sample)));
sample = newsample;
}
}
@ -540,7 +542,8 @@ namespace BizHawk.Emulation.Consoles.Nintendo
//newsample -= 8; //unbias
if (newsample != sample)
{
apu.recalculate = true;
//apu.recalculate = true;
apu.dlist.Add(new Delta(apu.sampleclock, 426 * (newsample - sample)));
sample = newsample;
}
}
@ -658,15 +661,21 @@ namespace BizHawk.Emulation.Consoles.Nintendo
if (out_shift.Bit(0))
{
if (out_deltacounter < 126)
{
out_deltacounter += 2;
apu.dlist.Add(new Delta(apu.sampleclock, 167 * 2));
}
}
else
{
if (out_deltacounter > 1)
{
out_deltacounter -= 2;
apu.dlist.Add(new Delta(apu.sampleclock, -167 * 2));
}
}
//apu.nes.LogLine("dmc out sample: {0}", out_deltacounter);
apu.recalculate = true;
//apu.recalculate = true;
}
//The right shift register is clocked.
@ -746,9 +755,14 @@ namespace BizHawk.Emulation.Consoles.Nintendo
apu.SyncIRQ();
break;
case 1:
out_deltacounter = val & 0x7F;
int newsample = val & 0x7F;
if (out_deltacounter != newsample)
{
apu.dlist.Add(new Delta(apu.sampleclock, 167 * (newsample - out_deltacounter)));
out_deltacounter = newsample;
}
//apu.nes.LogLine("~~ out_deltacounter set to {0}", out_deltacounter);
apu.recalculate = true;
//apu.recalculate = true;
break;
case 2:
user_address = 0xC000 | (val << 6);
@ -1109,6 +1123,7 @@ namespace BizHawk.Emulation.Consoles.Nintendo
void EmitSample()
{
/*
if (recalculate)
{
recalculate = false;
@ -1130,7 +1145,7 @@ namespace BizHawk.Emulation.Consoles.Nintendo
//linear approximation
//float pulse_out = 0.00752f * (s_pulse0 + s_pulse1);
//float tnd_out = 0.00851f * s_tri + 0.00494f * /*NOISEADJUST * */ s_noise + 0.00335f * s_dmc;
//float tnd_out = 0.00851f * s_tri + 0.00494f * s_noise + 0.00335f * s_dmc;
//float output = pulse_out + tnd_out;
//this needs to leave enough headroom for straying DC bias due to the DMC unit getting stuck outputs. smb3 is bad about that.
//int mix = (int)(50000 * output);
@ -1158,7 +1173,7 @@ namespace BizHawk.Emulation.Consoles.Nintendo
//this needs to leave enough headroom for straying DC bias due to the DMC unit getting stuck outputs. smb3 is bad about that.
//int mix = (int)(20000 * output);
*/
sampleclock++;
}