reSIDfp::FilterModelConfig6581 Class Reference

#include <FilterModelConfig6581.h>

Inheritance diagram for reSIDfp::FilterModelConfig6581:

Public Member Functions
void	setFilterRange (double adjustment)
unsigned short *	getDAC (double adjustment) const
double	getWL_snake () const
unsigned short	getVcr_nVg (int i) const
unsigned short	getVcr_n_Ids_term (int i) const
double	getN16 () const
Public Member Functions inherited from reSIDfp::FilterModelConfig
unsigned short *	getVolume ()
unsigned short *	getResonance ()
unsigned short *	getSummer ()
unsigned short *	getMixer ()
unsigned short	getOpampRev (int i) const
double	getVddt () const
double	getVth () const
unsigned short	getNormalizedValue (double value) const
template<int N>
unsigned short	getNormalizedCurrentFactor (double wl) const
unsigned short	getNVmin () const
int	getNormalizedVoice (float value, unsigned int env) const

Static Public Member Functions
static FilterModelConfig6581 *	getInstance ()
static constexpr double	getUt ()

Protected Member Functions
double	getVoiceDC (unsigned int env) const override
Protected Member Functions inherited from reSIDfp::FilterModelConfig
	FilterModelConfig (double vvr, double c, double vdd, double vth, double ucox, const Spline::Point *opamp_voltage, int opamp_size)
void	setUCox (double new_uCox)
void	buildSummerTable (const OpAmp &opampModel)
void	buildMixerTable (const OpAmp &opampModel, double nRatio)
void	buildVolumeTable (const OpAmp &opampModel, double nDivisor)
void	buildResonanceTable (const OpAmp &opampModel, const double resonance_n[16])

Additional Inherited Members
Static Protected Member Functions inherited from reSIDfp::FilterModelConfig
static unsigned short	to_ushort_dither (double x, double d_noise)
static unsigned short	to_ushort (double x)
Protected Attributes inherited from reSIDfp::FilterModelConfig
const double	C
	Capacitor value.
const double	Vdd
	Positive supply voltage.
const double	Vth
	Threshold voltage.
const double	Vddt
	Vdd - Vth.
double	uCox
	Transconductance coefficient: u*Cox.
const double	vmin
const double	vmax
const double	denorm
const double	norm
const double	N16
	Fixed point scaling for 16 bit op-amp output.
const double	voice_voltage_range
double	currFactorCoeff
	Current factor coefficient for op-amp integrators.
unsigned short *	mixer
	Lookup tables for gain and summer op-amps in output stage / filter.
unsigned short *	summer
unsigned short *	volume
unsigned short *	resonance
unsigned short	opamp_rev [1<< 16]
	Reverse op-amp transfer function.
Static Protected Attributes inherited from reSIDfp::FilterModelConfig
static constexpr double	Ut = 26.0e-3
	Transistor parameters.

Detailed Description

Calculate parameters for 6581 filter emulation.

Member Function Documentation

getDAC()

unsigned short * reSIDfp::FilterModelConfig6581::getDAC

(

double

adjustment

)

const

Construct an 11 bit cutoff frequency DAC output voltage table. Ownership is transferred to the requester which becomes responsible of freeing the object when done.

Parameters

adjustment

Returns

the DAC table

getVoiceDC()

double reSIDfp::FilterModelConfig6581::getVoiceDC ( unsigned int env ) const

inlineoverrideprotectedvirtual

On 6581 the DC offset varies between ~5.0V and ~5.214V depending on the envelope value.

Implements reSIDfp::FilterModelConfig.

---

The documentation for this class was generated from the following files:

• FilterModelConfig6581.h
• FilterModelConfig6581.cpp