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ES5506: one more percent off

This commit is contained in:
tildearrow 2023-02-11 23:43:19 -05:00
parent 50431b08b0
commit 78d3f9d97f
5 changed files with 16 additions and 7 deletions
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2
extern/vgsound_emu-modified/vgsound_emu/src/es550x/es5506.cpp vendored
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@ -99,7 +99,7 @@ void es5506_core::voice_t::tick(u8 voice)
if (m_alu.busy())
{
fetch(0);
if ((m_alu.m_last_accum&(~m_alu.m_fraction))!=(m_alu.m_accum&(~m_alu.m_fraction))) fetch(0);
m_filter.tick(m_alu.interpolation());
// Send to output
m_output[0] = m_mute ? 0 : volume_calc(m_lvol, (short)m_filter.o4_1());

4
extern/vgsound_emu-modified/vgsound_emu/src/es550x/es550x.hpp vendored
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@ -169,6 +169,7 @@ class es550x_shared_core : public vgsound_emu_core
, m_start(0)
, m_end(0)
, m_accum(0)
, m_last_accum(0)
, m_sample{0,0}
{
}
@ -268,7 +269,7 @@ class es550x_shared_core : public vgsound_emu_core
inline s32 sample(u8 slot) { return m_sample[slot & 1]; }
private:
public:
class es550x_alu_cr_t : public vgsound_emu_core
{
public:
@ -370,6 +371,7 @@ class es550x_shared_core : public vgsound_emu_core
// 20 integer, 9 fraction for ES5504/ES5505
// 21 integer, 11 fraction for ES5506
u32 m_accum = 0;
u32 m_last_accum = 0;
// Samples
s32 m_sample[2];
};

2
extern/vgsound_emu-modified/vgsound_emu/src/es550x/es550x_alu.cpp vendored
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@ -16,6 +16,7 @@ void es550x_shared_core::es550x_voice_t::es550x_alu_t::reset()
m_start = 0;
m_end = 0;
m_accum = 0;
m_last_accum=0;
m_sample[0] = m_sample[1] = 0;
}
@ -23,6 +24,7 @@ bool es550x_shared_core::es550x_voice_t::es550x_alu_t::busy() { return !(m_cr.m_
bool es550x_shared_core::es550x_voice_t::es550x_alu_t::tick()
{
m_last_accum = m_accum;
if (m_cr.dir())
{
m_accum -= m_fc;

9
src/engine/platform/es5506.cpp
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@ -1153,14 +1153,15 @@ void DivPlatformES5506::notifyInsDeletion(void* ins) {
void DivPlatformES5506::setFlags(const DivConfig& flags) {
chipClock=16000000;
CHECK_CUSTOM_CLOCK;
rate=chipClock/512; // 2 E clock tick (16 CLKIN tick) per voice / 4
for (int i=0; i<32; i++) {
oscBuf[i]->rate=rate;
}
initChanMax=MAX(4,flags.getInt("channels",0x1f)&0x1f);
chanMax=initChanMax;
pageWriteMask(0x00,0x60,0x0b,chanMax);
rate=chipClock/(16*(initChanMax+1)); // 2 E clock tick (16 CLKIN tick) per voice / 4
for (int i=0; i<32; i++) {
oscBuf[i]->rate=rate;
}
}
void DivPlatformES5506::poke(unsigned int addr, unsigned short val) {

6
src/engine/platform/sound/c64_fp/siddefs-fp.h
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@ -21,10 +21,14 @@
#define SIDDEFS_FP_H
// Compilation configuration.
#define RESID_BRANCH_HINTS 0
#define RESID_BRANCH_HINTS 1
// Compiler specifics.
#if defined(__GNUC__) && (__GNUC__ >= 4)
#define HAVE_BUILTIN_EXPECT 1
#else
#define HAVE_BUILTIN_EXPECT 0
#endif
#ifndef M_PI
# define M_PI 3.14159265358979323846