mirror of
https://github.com/Oibaf66/frodo-wii.git
synced 2024-11-22 19:39:24 +01:00
1421 lines
42 KiB
C++
1421 lines
42 KiB
C++
/*
|
|
* SID.cpp - 6581 emulation
|
|
*
|
|
* Frodo (C) 1994-1997,2002-2005 Christian Bauer
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
/*
|
|
* Incompatibilities:
|
|
* ------------------
|
|
*
|
|
* - Lots of empirically determined constants in the filter calculations
|
|
*/
|
|
|
|
#include "sysdeps.h"
|
|
#include <math.h>
|
|
|
|
#include "SID.h"
|
|
#include "Prefs.h"
|
|
|
|
#ifdef __BEOS__
|
|
#include <media/SoundPlayer.h>
|
|
#endif
|
|
|
|
#ifdef AMIGA
|
|
#include <exec/types.h>
|
|
#include <utility/hooks.h>
|
|
#include <devices/ahi.h>
|
|
#define USE_FIXPOINT_MATHS
|
|
#define FIXPOINT_PREC 16 // number of fractional bits used in fixpoint representation
|
|
#define PRECOMPUTE_RESONANCE
|
|
#define ldSINTAB 9 // size of sinus table (0 to 90 degrees)
|
|
#endif
|
|
|
|
#ifdef SUN
|
|
extern "C" {
|
|
#include <sys/audioio.h>
|
|
}
|
|
#endif
|
|
|
|
#ifdef __hpux
|
|
extern "C" {
|
|
#include <sys/audio.h>
|
|
}
|
|
#endif
|
|
|
|
#ifdef __mac__
|
|
#include <Sound.h>
|
|
#define M_PI 3.14159265358979323846
|
|
#endif
|
|
|
|
#ifdef WIN32
|
|
class DigitalPlayer;
|
|
#endif
|
|
|
|
#ifdef __riscos__
|
|
#include "ROLib.h"
|
|
# ifndef M_PI
|
|
# define M_PI 3.14159265358979323846
|
|
# endif
|
|
#define USE_FIXPOINT_MATHS
|
|
#define FIXPOINT_PREC 16 // number of fractional bits used in fixpoint representation
|
|
#define PRECOMPUTE_RESONANCE
|
|
#define ldSINTAB 9 // size of sinus table (0 to 90 degrees)
|
|
#endif
|
|
|
|
|
|
#ifdef USE_FIXPOINT_MATHS
|
|
#include "FixPoint.h"
|
|
#endif
|
|
|
|
|
|
/*
|
|
* Resonance frequency polynomials
|
|
*/
|
|
|
|
#define CALC_RESONANCE_LP(f) (227.755\
|
|
- 1.7635 * f\
|
|
- 0.0176385 * f * f\
|
|
+ 0.00333484 * f * f * f\
|
|
- 9.05683E-6 * f * f * f * f)
|
|
|
|
#define CALC_RESONANCE_HP(f) (366.374\
|
|
- 14.0052 * f\
|
|
+ 0.603212 * f * f\
|
|
- 0.000880196 * f * f * f)
|
|
|
|
|
|
/*
|
|
* Random number generator for noise waveform
|
|
*/
|
|
|
|
static uint8 sid_random(void);
|
|
static uint8 sid_random(void)
|
|
{
|
|
static uint32 seed = 1;
|
|
seed = seed * 1103515245 + 12345;
|
|
return seed >> 16;
|
|
}
|
|
|
|
|
|
/*
|
|
* Constructor
|
|
*/
|
|
|
|
MOS6581::MOS6581(C64 *c64) : the_c64(c64)
|
|
{
|
|
the_renderer = NULL;
|
|
for (int i=0; i<32; i++)
|
|
regs[i] = 0;
|
|
|
|
// Open the renderer
|
|
open_close_renderer(SIDTYPE_NONE, ThePrefs.SIDType);
|
|
}
|
|
|
|
|
|
/*
|
|
* Destructor
|
|
*/
|
|
|
|
MOS6581::~MOS6581()
|
|
{
|
|
// Close the renderer
|
|
open_close_renderer(ThePrefs.SIDType, SIDTYPE_NONE);
|
|
}
|
|
|
|
|
|
/*
|
|
* Reset the SID
|
|
*/
|
|
|
|
void MOS6581::Reset(void)
|
|
{
|
|
for (int i=0; i<32; i++)
|
|
regs[i] = 0;
|
|
last_sid_byte = 0;
|
|
|
|
// Reset the renderer
|
|
if (the_renderer != NULL)
|
|
the_renderer->Reset();
|
|
}
|
|
|
|
|
|
/*
|
|
* Preferences may have changed
|
|
*/
|
|
|
|
void MOS6581::NewPrefs(Prefs *prefs)
|
|
{
|
|
open_close_renderer(ThePrefs.SIDType, prefs->SIDType);
|
|
if (the_renderer != NULL)
|
|
the_renderer->NewPrefs(prefs);
|
|
}
|
|
|
|
|
|
/*
|
|
* Pause sound output
|
|
*/
|
|
|
|
void MOS6581::PauseSound(void)
|
|
{
|
|
if (the_renderer != NULL)
|
|
the_renderer->Pause();
|
|
}
|
|
|
|
|
|
/*
|
|
* Resume sound output
|
|
*/
|
|
|
|
void MOS6581::ResumeSound(void)
|
|
{
|
|
if (the_renderer != NULL)
|
|
the_renderer->Resume();
|
|
}
|
|
|
|
|
|
/*
|
|
* Get SID state
|
|
*/
|
|
|
|
void MOS6581::GetState(MOS6581State *ss)
|
|
{
|
|
ss->freq_lo_1 = regs[0];
|
|
ss->freq_hi_1 = regs[1];
|
|
ss->pw_lo_1 = regs[2];
|
|
ss->pw_hi_1 = regs[3];
|
|
ss->ctrl_1 = regs[4];
|
|
ss->AD_1 = regs[5];
|
|
ss->SR_1 = regs[6];
|
|
|
|
ss->freq_lo_2 = regs[7];
|
|
ss->freq_hi_2 = regs[8];
|
|
ss->pw_lo_2 = regs[9];
|
|
ss->pw_hi_2 = regs[10];
|
|
ss->ctrl_2 = regs[11];
|
|
ss->AD_2 = regs[12];
|
|
ss->SR_2 = regs[13];
|
|
|
|
ss->freq_lo_3 = regs[14];
|
|
ss->freq_hi_3 = regs[15];
|
|
ss->pw_lo_3 = regs[16];
|
|
ss->pw_hi_3 = regs[17];
|
|
ss->ctrl_3 = regs[18];
|
|
ss->AD_3 = regs[19];
|
|
ss->SR_3 = regs[20];
|
|
|
|
ss->fc_lo = regs[21];
|
|
ss->fc_hi = regs[22];
|
|
ss->res_filt = regs[23];
|
|
ss->mode_vol = regs[24];
|
|
|
|
ss->pot_x = 0xff;
|
|
ss->pot_y = 0xff;
|
|
ss->osc_3 = 0;
|
|
ss->env_3 = 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* Restore SID state
|
|
*/
|
|
|
|
void MOS6581::SetState(MOS6581State *ss)
|
|
{
|
|
regs[0] = ss->freq_lo_1;
|
|
regs[1] = ss->freq_hi_1;
|
|
regs[2] = ss->pw_lo_1;
|
|
regs[3] = ss->pw_hi_1;
|
|
regs[4] = ss->ctrl_1;
|
|
regs[5] = ss->AD_1;
|
|
regs[6] = ss->SR_1;
|
|
|
|
regs[7] = ss->freq_lo_2;
|
|
regs[8] = ss->freq_hi_2;
|
|
regs[9] = ss->pw_lo_2;
|
|
regs[10] = ss->pw_hi_2;
|
|
regs[11] = ss->ctrl_2;
|
|
regs[12] = ss->AD_2;
|
|
regs[13] = ss->SR_2;
|
|
|
|
regs[14] = ss->freq_lo_3;
|
|
regs[15] = ss->freq_hi_3;
|
|
regs[16] = ss->pw_lo_3;
|
|
regs[17] = ss->pw_hi_3;
|
|
regs[18] = ss->ctrl_3;
|
|
regs[19] = ss->AD_3;
|
|
regs[20] = ss->SR_3;
|
|
|
|
regs[21] = ss->fc_lo;
|
|
regs[22] = ss->fc_hi;
|
|
regs[23] = ss->res_filt;
|
|
regs[24] = ss->mode_vol;
|
|
|
|
// Stuff the new register values into the renderer
|
|
if (the_renderer != NULL)
|
|
for (int i=0; i<25; i++)
|
|
the_renderer->WriteRegister(i, regs[i]);
|
|
}
|
|
|
|
|
|
/**
|
|
** Renderer for digital SID emulation (SIDTYPE_DIGITAL)
|
|
**/
|
|
|
|
#if defined(AMIGA) || defined(__riscos__)
|
|
const uint32 SAMPLE_FREQ = 22050; // Sample output frequency in Hz
|
|
#else
|
|
const uint32 SAMPLE_FREQ = 32000; // Sample output frequency in Hz
|
|
#endif
|
|
const uint32 SID_FREQ = 985248; // SID frequency in Hz
|
|
const uint32 CALC_FREQ = 50; // Frequency at which calc_buffer is called in Hz (should be 50Hz)
|
|
const uint32 SID_CYCLES = SID_FREQ/SAMPLE_FREQ; // # of SID clocks per sample frame
|
|
const int SAMPLE_BUF_SIZE = 0x138*2;// Size of buffer for sampled voice (double buffered)
|
|
|
|
// SID waveforms (some of them :-)
|
|
enum {
|
|
WAVE_NONE,
|
|
WAVE_TRI,
|
|
WAVE_SAW,
|
|
WAVE_TRISAW,
|
|
WAVE_RECT,
|
|
WAVE_TRIRECT,
|
|
WAVE_SAWRECT,
|
|
WAVE_TRISAWRECT,
|
|
WAVE_NOISE
|
|
};
|
|
|
|
// EG states
|
|
enum {
|
|
EG_IDLE,
|
|
EG_ATTACK,
|
|
EG_DECAY,
|
|
EG_RELEASE
|
|
};
|
|
|
|
// Filter types
|
|
enum {
|
|
FILT_NONE,
|
|
FILT_LP,
|
|
FILT_BP,
|
|
FILT_LPBP,
|
|
FILT_HP,
|
|
FILT_NOTCH,
|
|
FILT_HPBP,
|
|
FILT_ALL
|
|
};
|
|
|
|
// Structure for one voice
|
|
struct DRVoice {
|
|
int wave; // Selected waveform
|
|
int eg_state; // Current state of EG
|
|
DRVoice *mod_by; // Voice that modulates this one
|
|
DRVoice *mod_to; // Voice that is modulated by this one
|
|
|
|
uint32 count; // Counter for waveform generator, 8.16 fixed
|
|
uint32 add; // Added to counter in every frame
|
|
|
|
uint16 freq; // SID frequency value
|
|
uint16 pw; // SID pulse-width value
|
|
|
|
uint32 a_add; // EG parameters
|
|
uint32 d_sub;
|
|
uint32 s_level;
|
|
uint32 r_sub;
|
|
uint32 eg_level; // Current EG level, 8.16 fixed
|
|
|
|
uint32 noise; // Last noise generator output value
|
|
|
|
bool gate; // EG gate bit
|
|
bool ring; // Ring modulation bit
|
|
bool test; // Test bit
|
|
bool filter; // Flag: Voice filtered
|
|
|
|
// The following bit is set for the modulating
|
|
// voice, not for the modulated one (as the SID bits)
|
|
bool sync; // Sync modulation bit
|
|
bool mute; // Voice muted (voice 3 only)
|
|
};
|
|
|
|
// Renderer class
|
|
class DigitalRenderer : public SIDRenderer {
|
|
public:
|
|
#if defined(__BEOS__) || defined(__riscos__)
|
|
DigitalRenderer(C64 *c64);
|
|
#else
|
|
DigitalRenderer();
|
|
#endif
|
|
virtual ~DigitalRenderer();
|
|
|
|
virtual void Reset(void);
|
|
virtual void EmulateLine(void);
|
|
virtual void WriteRegister(uint16 adr, uint8 byte);
|
|
virtual void NewPrefs(Prefs *prefs);
|
|
virtual void Pause(void);
|
|
virtual void Resume(void);
|
|
#ifdef WII
|
|
void calc_buffer(int16 *buf, long count);
|
|
#endif
|
|
private:
|
|
void init_sound(void);
|
|
void calc_filter(void);
|
|
#ifdef __riscos__
|
|
void calc_buffer(uint8 *buf, long count);
|
|
#else
|
|
#ifndef WII
|
|
void calc_buffer(int16 *buf, long count);
|
|
#endif
|
|
#endif
|
|
|
|
bool ready; // Flag: Renderer has initialized and is ready
|
|
uint8 volume; // Master volume
|
|
|
|
static uint16 TriTable[0x1000*2]; // Tables for certain waveforms
|
|
static const uint16 TriSawTable[0x100];
|
|
static const uint16 TriRectTable[0x100];
|
|
static const uint16 SawRectTable[0x100];
|
|
static const uint16 TriSawRectTable[0x100];
|
|
static const uint32 EGTable[16]; // Increment/decrement values for all A/D/R settings
|
|
static const uint8 EGDRShift[256]; // For exponential approximation of D/R
|
|
static const int16 SampleTab[16]; // Table for sampled voice
|
|
|
|
DRVoice voice[3]; // Data for 3 voices
|
|
|
|
uint8 f_type; // Filter type
|
|
uint8 f_freq; // SID filter frequency (upper 8 bits)
|
|
uint8 f_res; // Filter resonance (0..15)
|
|
#ifdef USE_FIXPOINT_MATHS
|
|
FixPoint f_ampl;
|
|
FixPoint d1, d2, g1, g2;
|
|
int32 xn1, xn2, yn1, yn2; // can become very large
|
|
FixPoint sidquot;
|
|
#ifdef PRECOMPUTE_RESONANCE
|
|
FixPoint resonanceLP[256];
|
|
FixPoint resonanceHP[256];
|
|
#endif
|
|
#else
|
|
float f_ampl; // IIR filter input attenuation
|
|
float d1, d2, g1, g2; // IIR filter coefficients
|
|
float xn1, xn2, yn1, yn2; // IIR filter previous input/output signal
|
|
#ifdef PRECOMPUTE_RESONANCE
|
|
float resonanceLP[256]; // shortcut for calc_filter
|
|
float resonanceHP[256];
|
|
#endif
|
|
#endif
|
|
|
|
uint8 sample_buf[SAMPLE_BUF_SIZE]; // Buffer for sampled voice
|
|
int sample_in_ptr; // Index in sample_buf for writing
|
|
|
|
#ifdef __BEOS__
|
|
static void buffer_proc(void *cookie, void *buffer, size_t size, const media_raw_audio_format &format);
|
|
C64 *the_c64; // Pointer to C64 object
|
|
BSoundPlayer *the_player; // Pointer to sound player
|
|
bool player_stopped; // Flag: player stopped
|
|
#endif
|
|
|
|
#ifdef AMIGA
|
|
static void sub_invoc(void); // Sound sub-process
|
|
void sub_func(void);
|
|
struct Process *sound_process;
|
|
int quit_sig, pause_sig,
|
|
resume_sig, ahi_sig; // Sub-process signals
|
|
struct Task *main_task; // Main task
|
|
int main_sig; // Main task signals
|
|
static ULONG sound_func(void); // AHI callback
|
|
struct MsgPort *ahi_port; // Port and IORequest for AHI
|
|
struct AHIRequest *ahi_io;
|
|
struct AHIAudioCtrl *ahi_ctrl; // AHI control structure
|
|
struct AHISampleInfo sample[2]; // SampleInfos for double buffering
|
|
struct Hook sf_hook; // Hook for callback function
|
|
int play_buf; // Number of buffer currently playing
|
|
#endif
|
|
|
|
#ifdef HAVE_SDL
|
|
int sndbufsize;
|
|
int16 *sound_buffer;
|
|
#endif
|
|
|
|
#ifdef __linux__
|
|
int devfd, sndbufsize, buffer_rate;
|
|
int16 *sound_buffer;
|
|
#endif
|
|
|
|
#ifdef SUN
|
|
int fd;
|
|
audio_info status;
|
|
uint_t sent_samples,delta_samples;
|
|
int16 *sound_calc_buf;
|
|
#endif
|
|
|
|
#ifdef __hpux
|
|
int fd;
|
|
audio_status status;
|
|
int16 *sound_calc_buf;
|
|
int linecnt;
|
|
#endif
|
|
|
|
#ifdef __mac__
|
|
SndChannelPtr chan1;
|
|
SndDoubleBufferHeader myDblHeader;
|
|
SndDoubleBufferPtr sampleBuffer1, sampleBuffer2;
|
|
SCStatus myStatus;
|
|
short sndbufsize;
|
|
OSErr err;
|
|
|
|
static void doubleBackProc(SndChannelPtr chan, SndDoubleBufferPtr doubleBuffer);
|
|
#endif
|
|
|
|
#ifdef WIN32
|
|
public:
|
|
void VBlank(void);
|
|
|
|
private:
|
|
void StartPlayer(void);
|
|
void StopPlayer(void);
|
|
|
|
BOOL direct_sound;
|
|
DigitalPlayer *ThePlayer;
|
|
SWORD *sound_buffer;
|
|
int to_output;
|
|
int sb_pos;
|
|
int divisor;
|
|
int *lead;
|
|
int lead_pos;
|
|
#endif
|
|
|
|
#ifdef __riscos__
|
|
int linecnt, sndbufsize;
|
|
uint8 *sound_buffer;
|
|
C64 *the_c64;
|
|
#endif
|
|
};
|
|
|
|
// Static data members
|
|
uint16 DigitalRenderer::TriTable[0x1000*2];
|
|
|
|
#ifndef EMUL_MOS8580
|
|
// Sampled from a 6581R4
|
|
const uint16 DigitalRenderer::TriSawTable[0x100] = {
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0808,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x1010, 0x3C3C,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0808,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x1010, 0x3C3C
|
|
};
|
|
|
|
const uint16 DigitalRenderer::TriRectTable[0x100] = {
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x8080,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x8080,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x8080, 0xC0C0,
|
|
0x0000, 0x8080, 0x8080, 0xE0E0, 0x8080, 0xE0E0, 0xF0F0, 0xFCFC,
|
|
0xFFFF, 0xFCFC, 0xFAFA, 0xF0F0, 0xF6F6, 0xE0E0, 0xE0E0, 0x8080,
|
|
0xEEEE, 0xE0E0, 0xE0E0, 0x8080, 0xC0C0, 0x0000, 0x0000, 0x0000,
|
|
0xDEDE, 0xC0C0, 0xC0C0, 0x0000, 0x8080, 0x0000, 0x0000, 0x0000,
|
|
0x8080, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0xBEBE, 0x8080, 0x8080, 0x0000, 0x8080, 0x0000, 0x0000, 0x0000,
|
|
0x8080, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x7E7E, 0x4040, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000
|
|
};
|
|
|
|
const uint16 DigitalRenderer::SawRectTable[0x100] = {
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x7878,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x7878
|
|
};
|
|
|
|
const uint16 DigitalRenderer::TriSawRectTable[0x100] = {
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000
|
|
};
|
|
#else
|
|
// Sampled from an 8580R5
|
|
const uint16 DigitalRenderer::TriSawTable[0x100] = {
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0808,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x1818, 0x3C3C,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x1C1C,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x8080, 0x0000, 0x8080, 0x8080,
|
|
0xC0C0, 0xC0C0, 0xC0C0, 0xC0C0, 0xC0C0, 0xC0C0, 0xC0C0, 0xE0E0,
|
|
0xF0F0, 0xF0F0, 0xF0F0, 0xF0F0, 0xF8F8, 0xF8F8, 0xFCFC, 0xFEFE
|
|
};
|
|
|
|
const uint16 DigitalRenderer::TriRectTable[0x100] = {
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0xFFFF, 0xFCFC, 0xF8F8, 0xF0F0, 0xF4F4, 0xF0F0, 0xF0F0, 0xE0E0,
|
|
0xECEC, 0xE0E0, 0xE0E0, 0xC0C0, 0xE0E0, 0xC0C0, 0xC0C0, 0xC0C0,
|
|
0xDCDC, 0xC0C0, 0xC0C0, 0xC0C0, 0xC0C0, 0xC0C0, 0x8080, 0x8080,
|
|
0xC0C0, 0x8080, 0x8080, 0x8080, 0x8080, 0x8080, 0x0000, 0x0000,
|
|
0xBEBE, 0xA0A0, 0x8080, 0x8080, 0x8080, 0x8080, 0x8080, 0x0000,
|
|
0x8080, 0x8080, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x8080, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x7E7E, 0x7070, 0x6060, 0x0000, 0x4040, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000
|
|
};
|
|
|
|
const uint16 DigitalRenderer::SawRectTable[0x100] = {
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x8080,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x8080, 0x8080,
|
|
0x0000, 0x8080, 0x8080, 0x8080, 0x8080, 0x8080, 0xB0B0, 0xBEBE,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x8080,
|
|
0x0000, 0x0000, 0x0000, 0x8080, 0x8080, 0x8080, 0x8080, 0xC0C0,
|
|
0x0000, 0x8080, 0x8080, 0x8080, 0x8080, 0x8080, 0x8080, 0xC0C0,
|
|
0x8080, 0x8080, 0xC0C0, 0xC0C0, 0xC0C0, 0xC0C0, 0xC0C0, 0xDCDC,
|
|
0x8080, 0x8080, 0x8080, 0xC0C0, 0xC0C0, 0xC0C0, 0xC0C0, 0xC0C0,
|
|
0xC0C0, 0xC0C0, 0xC0C0, 0xE0E0, 0xE0E0, 0xE0E0, 0xE0E0, 0xECEC,
|
|
0xC0C0, 0xE0E0, 0xE0E0, 0xE0E0, 0xE0E0, 0xF0F0, 0xF0F0, 0xF4F4,
|
|
0xF0F0, 0xF0F0, 0xF8F8, 0xF8F8, 0xF8F8, 0xFCFC, 0xFEFE, 0xFFFF
|
|
};
|
|
|
|
const uint16 DigitalRenderer::TriSawRectTable[0x100] = {
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x8080, 0x8080,
|
|
0x8080, 0x8080, 0x8080, 0x8080, 0x8080, 0x8080, 0xC0C0, 0xC0C0,
|
|
0xC0C0, 0xC0C0, 0xE0E0, 0xE0E0, 0xE0E0, 0xF0F0, 0xF8F8, 0xFCFC
|
|
};
|
|
#endif
|
|
|
|
const uint32 DigitalRenderer::EGTable[16] = {
|
|
(SID_CYCLES << 16) / 9, (SID_CYCLES << 16) / 32,
|
|
(SID_CYCLES << 16) / 63, (SID_CYCLES << 16) / 95,
|
|
(SID_CYCLES << 16) / 149, (SID_CYCLES << 16) / 220,
|
|
(SID_CYCLES << 16) / 267, (SID_CYCLES << 16) / 313,
|
|
(SID_CYCLES << 16) / 392, (SID_CYCLES << 16) / 977,
|
|
(SID_CYCLES << 16) / 1954, (SID_CYCLES << 16) / 3126,
|
|
(SID_CYCLES << 16) / 3906, (SID_CYCLES << 16) / 11720,
|
|
(SID_CYCLES << 16) / 19531, (SID_CYCLES << 16) / 31251
|
|
};
|
|
|
|
const uint8 DigitalRenderer::EGDRShift[256] = {
|
|
5,5,5,5,5,5,5,5,4,4,4,4,4,4,4,4,
|
|
3,3,3,3,3,3,3,3,3,3,3,3,2,2,2,2,
|
|
2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,
|
|
2,2,2,2,2,2,2,2,1,1,1,1,1,1,1,1,
|
|
1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
|
|
1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
|
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
|
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
|
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
|
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
|
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
|
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
|
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
|
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
|
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
|
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
|
|
};
|
|
|
|
const int16 DigitalRenderer::SampleTab[16] = {
|
|
0x8000, 0x9111, 0xa222, 0xb333, 0xc444, 0xd555, 0xe666, 0xf777,
|
|
0x0888, 0x1999, 0x2aaa, 0x3bbb, 0x4ccc, 0x5ddd, 0x6eee, 0x7fff,
|
|
};
|
|
|
|
|
|
/*
|
|
* Constructor
|
|
*/
|
|
|
|
#if defined(__BEOS__) || defined(__riscos__)
|
|
DigitalRenderer::DigitalRenderer(C64 *c64) : the_c64(c64)
|
|
#else
|
|
DigitalRenderer::DigitalRenderer()
|
|
#endif
|
|
{
|
|
// Link voices together
|
|
voice[0].mod_by = &voice[2];
|
|
voice[1].mod_by = &voice[0];
|
|
voice[2].mod_by = &voice[1];
|
|
voice[0].mod_to = &voice[1];
|
|
voice[1].mod_to = &voice[2];
|
|
voice[2].mod_to = &voice[0];
|
|
|
|
// Calculate triangle table
|
|
for (int i=0; i<0x1000; i++) {
|
|
TriTable[i] = (i << 4) | (i >> 8);
|
|
TriTable[0x1fff-i] = (i << 4) | (i >> 8);
|
|
}
|
|
|
|
#ifdef PRECOMPUTE_RESONANCE
|
|
#ifdef USE_FIXPOINT_MATHS
|
|
// slow floating point doesn't matter much on startup!
|
|
for (int i=0; i<256; i++) {
|
|
resonanceLP[i] = FixNo(CALC_RESONANCE_LP(i));
|
|
resonanceHP[i] = FixNo(CALC_RESONANCE_HP(i));
|
|
}
|
|
// Pre-compute the quotient. No problem since int-part is small enough
|
|
sidquot = (int32)((((double)SID_FREQ)*65536) / SAMPLE_FREQ);
|
|
// compute lookup table for sin and cos
|
|
InitFixSinTab();
|
|
#else
|
|
for (int i=0; i<256; i++) {
|
|
resonanceLP[i] = CALC_RESONANCE_LP(i);
|
|
resonanceHP[i] = CALC_RESONANCE_HP(i);
|
|
}
|
|
#endif
|
|
#endif
|
|
|
|
Reset();
|
|
|
|
// System specific initialization
|
|
init_sound();
|
|
}
|
|
|
|
|
|
/*
|
|
* Reset emulation
|
|
*/
|
|
|
|
void DigitalRenderer::Reset(void)
|
|
{
|
|
volume = 0;
|
|
|
|
for (int v=0; v<3; v++) {
|
|
voice[v].wave = WAVE_NONE;
|
|
voice[v].eg_state = EG_IDLE;
|
|
voice[v].count = voice[v].add = 0;
|
|
voice[v].freq = voice[v].pw = 0;
|
|
voice[v].eg_level = voice[v].s_level = 0;
|
|
voice[v].a_add = voice[v].d_sub = voice[v].r_sub = EGTable[0];
|
|
voice[v].gate = voice[v].ring = voice[v].test = false;
|
|
voice[v].filter = voice[v].sync = voice[v].mute = false;
|
|
}
|
|
|
|
f_type = FILT_NONE;
|
|
f_freq = f_res = 0;
|
|
#ifdef USE_FIXPOINT_MATHS
|
|
f_ampl = FixNo(1);
|
|
d1 = d2 = g1 = g2 = 0;
|
|
xn1 = xn2 = yn1 = yn2 = 0;
|
|
#else
|
|
f_ampl = 1.0;
|
|
d1 = d2 = g1 = g2 = 0.0;
|
|
xn1 = xn2 = yn1 = yn2 = 0.0;
|
|
#endif
|
|
|
|
sample_in_ptr = 0;
|
|
memset(sample_buf, 0, SAMPLE_BUF_SIZE);
|
|
}
|
|
|
|
|
|
/*
|
|
* Write to register
|
|
*/
|
|
|
|
void DigitalRenderer::WriteRegister(uint16 adr, uint8 byte)
|
|
{
|
|
if (!ready)
|
|
return;
|
|
|
|
int v = adr/7; // Voice number
|
|
|
|
switch (adr) {
|
|
case 0:
|
|
case 7:
|
|
case 14:
|
|
voice[v].freq = (voice[v].freq & 0xff00) | byte;
|
|
#ifdef USE_FIXPOINT_MATHS
|
|
voice[v].add = sidquot.imul((int)voice[v].freq);
|
|
#else
|
|
voice[v].add = (uint32)((float)voice[v].freq * SID_FREQ / SAMPLE_FREQ);
|
|
#endif
|
|
break;
|
|
|
|
case 1:
|
|
case 8:
|
|
case 15:
|
|
voice[v].freq = (voice[v].freq & 0xff) | (byte << 8);
|
|
#ifdef USE_FIXPOINT_MATHS
|
|
voice[v].add = sidquot.imul((int)voice[v].freq);
|
|
#else
|
|
voice[v].add = (uint32)((float)voice[v].freq * SID_FREQ / SAMPLE_FREQ);
|
|
#endif
|
|
break;
|
|
|
|
case 2:
|
|
case 9:
|
|
case 16:
|
|
voice[v].pw = (voice[v].pw & 0x0f00) | byte;
|
|
break;
|
|
|
|
case 3:
|
|
case 10:
|
|
case 17:
|
|
voice[v].pw = (voice[v].pw & 0xff) | ((byte & 0xf) << 8);
|
|
break;
|
|
|
|
case 4:
|
|
case 11:
|
|
case 18:
|
|
voice[v].wave = (byte >> 4) & 0xf;
|
|
if ((byte & 1) != voice[v].gate)
|
|
if (byte & 1) // Gate turned on
|
|
voice[v].eg_state = EG_ATTACK;
|
|
else // Gate turned off
|
|
if (voice[v].eg_state != EG_IDLE)
|
|
voice[v].eg_state = EG_RELEASE;
|
|
voice[v].gate = byte & 1;
|
|
voice[v].mod_by->sync = byte & 2;
|
|
voice[v].ring = byte & 4;
|
|
if ((voice[v].test = byte & 8) != 0)
|
|
voice[v].count = 0;
|
|
break;
|
|
|
|
case 5:
|
|
case 12:
|
|
case 19:
|
|
voice[v].a_add = EGTable[byte >> 4];
|
|
voice[v].d_sub = EGTable[byte & 0xf];
|
|
break;
|
|
|
|
case 6:
|
|
case 13:
|
|
case 20:
|
|
voice[v].s_level = (byte >> 4) * 0x111111;
|
|
voice[v].r_sub = EGTable[byte & 0xf];
|
|
break;
|
|
|
|
case 22:
|
|
if (byte != f_freq) {
|
|
f_freq = byte;
|
|
if (ThePrefs.SIDFilters)
|
|
calc_filter();
|
|
}
|
|
break;
|
|
|
|
case 23:
|
|
voice[0].filter = byte & 1;
|
|
voice[1].filter = byte & 2;
|
|
voice[2].filter = byte & 4;
|
|
if ((byte >> 4) != f_res) {
|
|
f_res = byte >> 4;
|
|
if (ThePrefs.SIDFilters)
|
|
calc_filter();
|
|
}
|
|
break;
|
|
|
|
case 24:
|
|
volume = byte & 0xf;
|
|
voice[2].mute = byte & 0x80;
|
|
if (((byte >> 4) & 7) != f_type) {
|
|
f_type = (byte >> 4) & 7;
|
|
#ifdef USE_FIXPOINT_MATHS
|
|
xn1 = xn2 = yn1 = yn2 = 0;
|
|
#else
|
|
xn1 = xn2 = yn1 = yn2 = 0.0;
|
|
#endif
|
|
if (ThePrefs.SIDFilters)
|
|
calc_filter();
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* Preferences may have changed
|
|
*/
|
|
|
|
void DigitalRenderer::NewPrefs(Prefs *prefs)
|
|
{
|
|
calc_filter();
|
|
}
|
|
|
|
|
|
/*
|
|
* Calculate IIR filter coefficients
|
|
*/
|
|
|
|
void DigitalRenderer::calc_filter(void)
|
|
{
|
|
#ifdef USE_FIXPOINT_MATHS
|
|
FixPoint fr, arg;
|
|
|
|
if (f_type == FILT_ALL)
|
|
{
|
|
d1 = 0; d2 = 0; g1 = 0; g2 = 0; f_ampl = FixNo(1); return;
|
|
}
|
|
else if (f_type == FILT_NONE)
|
|
{
|
|
d1 = 0; d2 = 0; g1 = 0; g2 = 0; f_ampl = 0; return;
|
|
}
|
|
#else
|
|
float fr, arg;
|
|
|
|
// Check for some trivial cases
|
|
if (f_type == FILT_ALL) {
|
|
d1 = 0.0; d2 = 0.0;
|
|
g1 = 0.0; g2 = 0.0;
|
|
f_ampl = 1.0;
|
|
return;
|
|
} else if (f_type == FILT_NONE) {
|
|
d1 = 0.0; d2 = 0.0;
|
|
g1 = 0.0; g2 = 0.0;
|
|
f_ampl = 0.0;
|
|
return;
|
|
}
|
|
#endif
|
|
|
|
// Calculate resonance frequency
|
|
if (f_type == FILT_LP || f_type == FILT_LPBP)
|
|
#ifdef PRECOMPUTE_RESONANCE
|
|
fr = resonanceLP[f_freq];
|
|
#else
|
|
fr = CALC_RESONANCE_LP(f_freq);
|
|
#endif
|
|
else
|
|
#ifdef PRECOMPUTE_RESONANCE
|
|
fr = resonanceHP[f_freq];
|
|
#else
|
|
fr = CALC_RESONANCE_HP(f_freq);
|
|
#endif
|
|
|
|
#ifdef USE_FIXPOINT_MATHS
|
|
// explanations see below.
|
|
arg = fr / (SAMPLE_FREQ >> 1);
|
|
if (arg > FixNo(0.99)) {arg = FixNo(0.99);}
|
|
if (arg < FixNo(0.01)) {arg = FixNo(0.01);}
|
|
|
|
g2 = FixNo(0.55) + FixNo(1.2) * arg * (arg - 1) + FixNo(0.0133333333) * f_res;
|
|
g1 = FixNo(-2) * g2.sqrt() * fixcos(arg);
|
|
|
|
if (f_type == FILT_LPBP || f_type == FILT_HPBP) {g2 += FixNo(0.1);}
|
|
|
|
if (g1.abs() >= g2 + 1)
|
|
{
|
|
if (g1 > 0) {g1 = g2 + FixNo(0.99);}
|
|
else {g1 = -(g2 + FixNo(0.99));}
|
|
}
|
|
|
|
switch (f_type)
|
|
{
|
|
case FILT_LPBP:
|
|
case FILT_LP:
|
|
d1 = FixNo(2); d2 = FixNo(1); f_ampl = FixNo(0.25) * (1 + g1 + g2); break;
|
|
case FILT_HPBP:
|
|
case FILT_HP:
|
|
d1 = FixNo(-2); d2 = FixNo(1); f_ampl = FixNo(0.25) * (1 - g1 + g2); break;
|
|
case FILT_BP:
|
|
d1 = 0; d2 = FixNo(-1);
|
|
f_ampl = FixNo(0.25) * (1 + g1 + g2) * (1 + fixcos(arg)) / fixsin(arg);
|
|
break;
|
|
case FILT_NOTCH:
|
|
d1 = FixNo(-2) * fixcos(arg); d2 = FixNo(1);
|
|
f_ampl = FixNo(0.25) * (1 + g1 + g2) * (1 + fixcos(arg)) / fixsin(arg);
|
|
break;
|
|
default: break;
|
|
}
|
|
|
|
#else
|
|
|
|
// Limit to <1/2 sample frequency, avoid div by 0 in case FILT_BP below
|
|
arg = fr / (float)(SAMPLE_FREQ >> 1);
|
|
if (arg > 0.99)
|
|
arg = 0.99;
|
|
if (arg < 0.01)
|
|
arg = 0.01;
|
|
|
|
// Calculate poles (resonance frequency and resonance)
|
|
g2 = 0.55 + 1.2 * arg * arg - 1.2 * arg + (float)f_res * 0.0133333333;
|
|
g1 = -2.0 * sqrt(g2) * cos(M_PI * arg);
|
|
|
|
// Increase resonance if LP/HP combined with BP
|
|
if (f_type == FILT_LPBP || f_type == FILT_HPBP)
|
|
g2 += 0.1;
|
|
|
|
// Stabilize filter
|
|
if (fabs(g1) >= g2 + 1.0)
|
|
if (g1 > 0.0)
|
|
g1 = g2 + 0.99;
|
|
else
|
|
g1 = -(g2 + 0.99);
|
|
|
|
// Calculate roots (filter characteristic) and input attenuation
|
|
switch (f_type) {
|
|
|
|
case FILT_LPBP:
|
|
case FILT_LP:
|
|
d1 = 2.0; d2 = 1.0;
|
|
f_ampl = 0.25 * (1.0 + g1 + g2);
|
|
break;
|
|
|
|
case FILT_HPBP:
|
|
case FILT_HP:
|
|
d1 = -2.0; d2 = 1.0;
|
|
f_ampl = 0.25 * (1.0 - g1 + g2);
|
|
break;
|
|
|
|
case FILT_BP:
|
|
d1 = 0.0; d2 = -1.0;
|
|
f_ampl = 0.25 * (1.0 + g1 + g2) * (1 + cos(M_PI * arg)) / sin(M_PI * arg);
|
|
break;
|
|
|
|
case FILT_NOTCH:
|
|
d1 = -2.0 * cos(M_PI * arg); d2 = 1.0;
|
|
f_ampl = 0.25 * (1.0 + g1 + g2) * (1 + cos(M_PI * arg)) / (sin(M_PI * arg));
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
|
|
/*
|
|
* Fill one audio buffer with calculated SID sound
|
|
*/
|
|
|
|
#ifdef __riscos__
|
|
void DigitalRenderer::calc_buffer(uint8 *buf, long count)
|
|
#else
|
|
void DigitalRenderer::calc_buffer(int16 *buf, long count)
|
|
#endif
|
|
{
|
|
// Get filter coefficients, so the emulator won't change
|
|
// them in the middle of our calculations
|
|
#ifdef USE_FIXPOINT_MATHS
|
|
FixPoint cf_ampl = f_ampl;
|
|
FixPoint cd1 = d1, cd2 = d2, cg1 = g1, cg2 = g2;
|
|
#else
|
|
float cf_ampl = f_ampl;
|
|
float cd1 = d1, cd2 = d2, cg1 = g1, cg2 = g2;
|
|
#endif
|
|
|
|
#ifdef __riscos__
|
|
uint8 *LinToLog, *LogScale;
|
|
#endif
|
|
|
|
// Index in sample_buf for reading, 16.16 fixed
|
|
uint32 sample_count = (sample_in_ptr + SAMPLE_BUF_SIZE/2) << 16;
|
|
|
|
#ifdef __riscos__ // on RISC OS we have 8 bit logarithmic sound
|
|
DigitalRenderer_GetTables(&LinToLog, &LogScale); // get translation tables
|
|
#else
|
|
count >>= 1; // 16 bit mono output, count is in bytes
|
|
#endif
|
|
while (count--) {
|
|
// Get current master volume from sample buffer,
|
|
// calculate sampled voice
|
|
uint8 master_volume = sample_buf[(sample_count >> 16) % SAMPLE_BUF_SIZE];
|
|
sample_count += ((0x138 * 50) << 16) / SAMPLE_FREQ;
|
|
int32 sum_output = SampleTab[master_volume] << 8;
|
|
int32 sum_output_filter = 0;
|
|
|
|
// Loop for all three voices
|
|
for (int j=0; j<3; j++) {
|
|
DRVoice *v = &voice[j];
|
|
|
|
// Envelope generators
|
|
uint16 envelope;
|
|
|
|
switch (v->eg_state) {
|
|
case EG_ATTACK:
|
|
v->eg_level += v->a_add;
|
|
if (v->eg_level > 0xffffff) {
|
|
v->eg_level = 0xffffff;
|
|
v->eg_state = EG_DECAY;
|
|
}
|
|
break;
|
|
case EG_DECAY:
|
|
if (v->eg_level <= v->s_level || v->eg_level > 0xffffff)
|
|
v->eg_level = v->s_level;
|
|
else {
|
|
v->eg_level -= v->d_sub >> EGDRShift[v->eg_level >> 16];
|
|
if (v->eg_level <= v->s_level || v->eg_level > 0xffffff)
|
|
v->eg_level = v->s_level;
|
|
}
|
|
break;
|
|
case EG_RELEASE:
|
|
v->eg_level -= v->r_sub >> EGDRShift[v->eg_level >> 16];
|
|
if (v->eg_level > 0xffffff) {
|
|
v->eg_level = 0;
|
|
v->eg_state = EG_IDLE;
|
|
}
|
|
break;
|
|
case EG_IDLE:
|
|
v->eg_level = 0;
|
|
break;
|
|
}
|
|
envelope = (v->eg_level * master_volume) >> 20;
|
|
|
|
// Waveform generator
|
|
if (v->mute)
|
|
continue;
|
|
uint16 output;
|
|
|
|
if (!v->test)
|
|
v->count += v->add;
|
|
|
|
if (v->sync && (v->count > 0x1000000))
|
|
v->mod_to->count = 0;
|
|
|
|
v->count &= 0xffffff;
|
|
|
|
switch (v->wave) {
|
|
case WAVE_TRI:
|
|
if (v->ring)
|
|
output = TriTable[(v->count ^ (v->mod_by->count & 0x800000)) >> 11];
|
|
else
|
|
output = TriTable[v->count >> 11];
|
|
break;
|
|
case WAVE_SAW:
|
|
output = v->count >> 8;
|
|
break;
|
|
case WAVE_RECT:
|
|
if (v->count > (uint32)(v->pw << 12))
|
|
output = 0xffff;
|
|
else
|
|
output = 0;
|
|
break;
|
|
case WAVE_TRISAW:
|
|
output = TriSawTable[v->count >> 16];
|
|
break;
|
|
case WAVE_TRIRECT:
|
|
if (v->count > (uint32)(v->pw << 12))
|
|
output = TriRectTable[v->count >> 16];
|
|
else
|
|
output = 0;
|
|
break;
|
|
case WAVE_SAWRECT:
|
|
if (v->count > (uint32)(v->pw << 12))
|
|
output = SawRectTable[v->count >> 16];
|
|
else
|
|
output = 0;
|
|
break;
|
|
case WAVE_TRISAWRECT:
|
|
if (v->count > (uint32)(v->pw << 12))
|
|
output = TriSawRectTable[v->count >> 16];
|
|
else
|
|
output = 0;
|
|
break;
|
|
case WAVE_NOISE:
|
|
if (v->count > 0x100000) {
|
|
output = v->noise = sid_random() << 8;
|
|
v->count &= 0xfffff;
|
|
} else
|
|
output = v->noise;
|
|
break;
|
|
default:
|
|
output = 0x8000;
|
|
break;
|
|
}
|
|
if (v->filter)
|
|
sum_output_filter += (int16)(output ^ 0x8000) * envelope;
|
|
else
|
|
sum_output += (int16)(output ^ 0x8000) * envelope;
|
|
}
|
|
|
|
// Filter
|
|
if (ThePrefs.SIDFilters) {
|
|
#ifdef USE_FIXPOINT_MATHS
|
|
int32 xn = cf_ampl.imul(sum_output_filter);
|
|
int32 yn = xn+cd1.imul(xn1)+cd2.imul(xn2)-cg1.imul(yn1)-cg2.imul(yn2);
|
|
yn2 = yn1; yn1 = yn; xn2 = xn1; xn1 = xn;
|
|
sum_output_filter = yn;
|
|
#else
|
|
float xn = (float)sum_output_filter * cf_ampl;
|
|
float yn = xn + cd1 * xn1 + cd2 * xn2 - cg1 * yn1 - cg2 * yn2;
|
|
yn2 = yn1; yn1 = yn; xn2 = xn1; xn1 = xn;
|
|
sum_output_filter = (int32)yn;
|
|
#endif
|
|
}
|
|
|
|
// Write to buffer
|
|
#if defined(__riscos__) // lookup in 8k (13bit) translation table
|
|
*buf++ = LinToLog[((sum_output + sum_output_filter) >> 13) & 0x1fff];
|
|
#else
|
|
*buf++ = (sum_output + sum_output_filter) >> 10;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
|
|
// Manufacturer independent sound is still just a dream...
|
|
#if defined(__BEOS__)
|
|
#include "SID_Be.h"
|
|
|
|
#elif defined(AMIGA)
|
|
#include "SID_Amiga.h"
|
|
|
|
#elif defined(HAVE_SDL)
|
|
#include "SID_SDL.h"
|
|
|
|
#elif defined(__linux__)
|
|
#include "SID_linux.h"
|
|
|
|
#elif defined(SUN)
|
|
#include "SID_sun.h"
|
|
|
|
#elif defined(__hpux)
|
|
#include "SID_hp.h"
|
|
|
|
#elif defined(__mac__)
|
|
#include "SID_mac.h"
|
|
|
|
#elif defined(WIN32)
|
|
#include "SID_WIN32.h"
|
|
|
|
#elif defined(__riscos__)
|
|
#include "SID_Acorn.h"
|
|
|
|
#else // No sound
|
|
void DigitalRenderer::init_sound(void) {ready = false;}
|
|
DigitalRenderer::~DigitalRenderer() {}
|
|
void DigitalRenderer::EmulateLine(void) {}
|
|
void DigitalRenderer::Pause(void) {}
|
|
void DigitalRenderer::Resume(void) {}
|
|
#endif
|
|
|
|
|
|
/*
|
|
* Open/close the renderer, according to old and new prefs
|
|
*/
|
|
|
|
void MOS6581::open_close_renderer(int old_type, int new_type)
|
|
{
|
|
if (old_type == new_type)
|
|
return;
|
|
|
|
// Delete the old renderer
|
|
delete the_renderer;
|
|
|
|
// Create new renderer
|
|
if (new_type == SIDTYPE_DIGITAL)
|
|
#if defined(__BEOS__) || defined(__riscos__)
|
|
the_renderer = new DigitalRenderer(the_c64);
|
|
#else
|
|
the_renderer = new DigitalRenderer;
|
|
#endif
|
|
#ifdef AMIGA
|
|
else if (new_type == SIDTYPE_SIDCARD)
|
|
the_renderer = new SIDCardRenderer;
|
|
#endif
|
|
#ifdef __linux__
|
|
else if (new_type == SIDTYPE_SIDCARD)
|
|
the_renderer = new CatweaselRenderer;
|
|
#endif
|
|
else
|
|
the_renderer = NULL;
|
|
|
|
// Stuff the current register values into the new renderer
|
|
if (the_renderer != NULL)
|
|
for (int i=0; i<25; i++)
|
|
the_renderer->WriteRegister(i, regs[i]);
|
|
}
|