Apple-2-Tools
/
apple2ix
mirror of https://github.com/mauiaaron/apple2.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity
apple2ix/src/audio/mockingboard.c

2356 lines
61 KiB
C
Raw Blame History

/*
* Apple // emulator for *ix
*
* This software package is subject to the GNU General Public License
* version 3 or later (your choice) as published by the Free Software
* Foundation.
*
* Copyright 2013-2015 Aaron Culliney
*
*/
/*
AppleWin : An Apple //e emulator for Windows
Copyright (C) 1994-1996, Michael O'Brien
Copyright (C) 1999-2001, Oliver Schmidt
Copyright (C) 2002-2005, Tom Charlesworth
Copyright (C) 2006-2007, Tom Charlesworth, Michael Pohoreski
AppleWin 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.
AppleWin 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 AppleWin; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/* Description: Mockingboard/Phasor emulation
*
* Author: Copyright (c) 2002-2006, Tom Charlesworth
*/
#define DSBCAPS_LOCSOFTWARE 0x00000008
#define DSBCAPS_CTRLVOLUME 0x00000080
#define DSBCAPS_CTRLPOSITIONNOTIFY 0x00000100
#define DSBVOLUME_MIN -10000
#define DSBVOLUME_MAX 0
// History:
//
// v1.12.07.1 (30 Dec 2005)
// - Update 6522 TIMERs after every 6502 opcode, giving more precise IRQs
// - Minimum TIMER freq is now 0x100 cycles
// - Added Phasor support
//
// v1.12.06.1 (16 July 2005)
// - Reworked 6522's ORB -> AY8910 decoder
// - Changed MB output so L=All voices from AY0 & AY2 & R=All voices from AY1 & AY3
// - Added crude support for Votrax speech chip (by using SSI263 phonemes)
//
// v1.12.04.1 (14 Sep 2004)
// - Switch MB output from dual-mono to stereo.
// - Relaxed TIMER1 freq from ~62Hz (period=0x4000) to ~83Hz (period=0x3000).
//
// 25 Apr 2004:
// - Added basic support for the SSI263 speech chip
//
// 15 Mar 2004:
// - Switched to MAME's AY8910 emulation (includes envelope support)
//
// v1.12.03 (11 Jan 2004)
// - For free-running 6522 timer1 IRQ, reload with current ACCESS_TIMER1 value.
// (Fixes Ultima 4/5 playback speed problem.)
//
// v1.12.01 (24 Nov 2002)
// - Shaped the tone waveform more logarithmically
// - Added support for MB ena/dis switch on Config dialog
// - Added log file support
//
// v1.12.00 (17 Nov 2002)
// - Initial version (no AY8910 envelope support)
//
// Notes on Votrax chip (on original Mockingboards):
// From Crimewave (Penguin Software):
// . Init:
// . DDRB = 0xFF
// . PCR = 0xB0
// . IER = 0x90
// . ORB = 0x03 (PAUSE0) or 0x3F (STOP)
// . IRQ:
// . ORB = Phoneme value
// . IRQ last phoneme complete:
// . IER = 0x10
// . ORB = 0x3F (STOP)
//
#include "common.h"
#ifdef APPLE2IX
# if defined(__linux) && !defined(ANDROID)
# include <sys/io.h>
# endif
#if defined(FAILED)
#undef FAILED
#endif
static inline bool FAILED(int x) { return x != 0; }
#define THREAD_PRIORITY_NORMAL 0
#define THREAD_PRIORITY_TIME_CRITICAL 15
#define STILL_ACTIVE 259
extern bool GetExitCodeThread(pthread_t hThread, unsigned long *lpExitCode);
extern pthread_t CreateThread(void* unused_lpThreadAttributes, int unused_dwStackSize, void *(*lpStartAddress)(void *unused), void *lpParameter, unsigned long unused_dwCreationFlags, unsigned long *lpThreadId);
extern bool SetThreadPriority(pthread_t hThread, int nPriority);
#else
#include "StdAfx.h"
#endif
#define LOG_SSI263 0
#include <wchar.h>
#include "audio/AY8910.h"
#include "audio/SSI263Phonemes.h"
#define SY6522_DEVICE_A 0
#define SY6522_DEVICE_B 1
#define SLOT4 4
#define SLOT5 5
#define NUM_MB 2
#define NUM_DEVS_PER_MB 2
#define NUM_AY8910 (NUM_MB*NUM_DEVS_PER_MB)
#define NUM_SY6522 NUM_AY8910
#define NUM_VOICES_PER_AY8910 3
#define NUM_VOICES (NUM_AY8910*NUM_VOICES_PER_AY8910)
// Chip offsets from card base.
#define SY6522A_Offset 0x00
#define SY6522B_Offset 0x80
#define SSI263_Offset 0x40
#define Phasor_SY6522A_CS 4
#define Phasor_SY6522B_CS 7
#define Phasor_SY6522A_Offset (1<<Phasor_SY6522A_CS)
#define Phasor_SY6522B_Offset (1<<Phasor_SY6522B_CS)
typedef struct
{
SY6522 sy6522;
uint8_t nAY8910Number;
uint8_t nAYCurrentRegister;
uint8_t nTimerStatus;
SSI263A SpeechChip;
} SY6522_AY8910;
// IFR & IER:
#define IxR_PERIPHERAL (1<<1)
#define IxR_VOTRAX (1<<4) // TO DO: Get proper name from 6522 datasheet!
#define IxR_TIMER2 (1<<5)
#define IxR_TIMER1 (1<<6)
// ACR:
#define RUNMODE (1<<6) // 0 = 1-Shot Mode, 1 = Free Running Mode
#define RM_ONESHOT (0<<6)
#define RM_FREERUNNING (1<<6)
// SSI263A registers:
#define SSI_DURPHON 0x00
#define SSI_INFLECT 0x01
#define SSI_RATEINF 0x02
#define SSI_CTTRAMP 0x03
#define SSI_FILFREQ 0x04
// Support 2 MB's, each with 2x SY6522/AY8910 pairs.
static SY6522_AY8910 g_MB[NUM_AY8910] = { 0 };
// Timer vars
static unsigned long g_n6522TimerPeriod = 0;
#ifdef APPLE2IX
#define TIMERDEVICE_INVALID -1
#else
static const unsigned int TIMERDEVICE_INVALID = -1;
#endif
static unsigned int g_nMBTimerDevice = TIMERDEVICE_INVALID; // SY6522 device# which is generating timer IRQ
static uint64_t g_uLastCumulativeCycles = 0;
// SSI263 vars:
static uint16_t g_nSSI263Device = 0; // SSI263 device# which is generating phoneme-complete IRQ
static int g_nCurrentActivePhoneme = -1;
static bool g_bStopPhoneme = false;
static bool g_bVotraxPhoneme = false;
#ifdef APPLE2IX
static unsigned long SAMPLE_RATE = 0;
static float samplesScale = 1.f;
#else
static const unsigned long SAMPLE_RATE = 44100; // Use a base freq so that DirectX (or sound h/w) doesn't have to up/down-sample
#endif
static short* ppAYVoiceBuffer[NUM_VOICES] = {0};
#ifdef APPLE2IX
bool g_bDisableDirectSoundMockingboard = false;
static uint64_t g_nMB_InActiveCycleCount = 0;
#else
static uint64_t g_nMB_InActiveCycleCount = 0;
#endif
static bool g_bMB_RegAccessedFlag = false;
static bool g_bMB_Active = false;
#ifdef APPLE2IX
//static pthread_t mockingboard_thread = (pthread_t)-1;
static pthread_t g_hThread = 0;
#else
static void *g_hThread = NULL;
#endif
static bool g_bMBAvailable = false;
//
static SS_CARDTYPE g_SoundcardType = CT_Empty; // Use CT_Empty to mean: no soundcard
static bool g_bPhasorEnable = false;
static uint8_t g_nPhasorMode = 0; // 0=Mockingboard emulation, 1=Phasor native
//-------------------------------------
#ifdef APPLE2IX
#define MB_CHANNELS 2
static unsigned long MB_BUF_SIZE = 0;
static unsigned short g_nMB_NumChannels = MB_CHANNELS;
static unsigned long g_dwDSBufferSize = 0;
#else
static const unsigned short g_nMB_NumChannels = 2;
static const unsigned long g_dwDSBufferSize = MAX_SAMPLES * sizeof(short) * g_nMB_NumChannels;
#endif
static const int16_t nWaveDataMin = (int16_t)0x8000;
static const int16_t nWaveDataMax = (int16_t)0x7FFF;
#ifdef APPLE2IX
static short *g_nMixBuffer = NULL;
#else
static short g_nMixBuffer[g_dwDSBufferSize / sizeof(short)];
#endif
static AudioBuffer_s *MockingboardVoice = NULL;
// HACK FIXME TODO : why 64? do we really need this much?!
#define MAX_VOICES 64
static AudioBuffer_s *SSI263Voice[MAX_VOICES] = { 0 };
#ifdef APPLE2IX
static pthread_cond_t mockingboard_cond = PTHREAD_COND_INITIALIZER;
static pthread_mutex_t mockingboard_mutex = PTHREAD_MUTEX_INITIALIZER;
static uint8_t quit_event = false;
#else
static const int g_nNumEvents = 2;
static void *g_hSSI263Event[g_nNumEvents] = {NULL}; // 1: Phoneme finished playing, 2: Exit thread
static unsigned long g_dwMaxPhonemeLen = 0;
#endif
// When 6522 IRQ is *not* active use 60Hz update freq for MB voices
static const double g_f6522TimerPeriod_NoIRQ = CLK_6502 / 60.0; // Constant whatever the CLK is set to
//---------------------------------------------------------------------------
// External global vars:
bool g_bMBTimerIrqActive = false;
#ifdef _DEBUG
uint32_t g_uTimer1IrqCount = 0; // DEBUG
#endif
//---------------------------------------------------------------------------
// Forward refs:
#ifdef APPLE2IX
static void* SSI263Thread(void *);
#else
static unsigned long SSI263Thread(void *);
#endif
static void Votrax_Write(uint8_t nDevice, uint8_t nValue);
#ifdef APPLE2IX
//---------------------------------------------------------------------------
// Windows Shim Code ...
pthread_t CreateThread(void* unused_lpThreadAttributes, int unused_dwStackSize, void *(*lpStartRoutine)(void *stuff), void *lpParameter, unsigned long unused_dwCreationFlags, unsigned long *lpThreadId)
{
pthread_t a_thread = 0;
int err = 0;
if ((err = pthread_create(&a_thread, NULL, lpStartRoutine, lpParameter)))
{
ERRLOG("pthread_create");
}
return a_thread;
}
bool SetThreadPriority(pthread_t thread, int unused_nPriority)
{
// assuming time critical ...
#if defined(__APPLE__) || defined(ANDROID)
#warning possible FIXME possible TODO : set thread priority in Darwin/Mach ?
#else
int policy = sched_getscheduler(getpid());
int prio = 0;
if ((prio = sched_get_priority_max(policy)) < 0)
{
ERRLOG("OOPS sched_get_priority_max");
return 0;
}
int err = 0;
if ((err = pthread_setschedprio(thread, prio)))
{
ERRLOG("OOPS pthread_setschedprio");
return 0;
}
#endif
return 1;
}
bool GetExitCodeThread(pthread_t thread, unsigned long *lpExitCode)
{
#if defined(__APPLE__) || defined(ANDROID)
int err = 0;
if ( (err = pthread_join(thread, NULL)) ) {
ERRLOG("OOPS pthread_join");
}
if (lpExitCode) {
*lpExitCode = err;
}
#else
if (pthread_tryjoin_np(thread, NULL))
{
if (lpExitCode)
{
*lpExitCode = STILL_ACTIVE;
}
}
else if (lpExitCode)
{
*lpExitCode = 0;
}
#endif
return 1;
}
#endif
//---------------------------------------------------------------------------
static void StartTimer(SY6522_AY8910* pMB)
{
if((pMB->nAY8910Number & 1) != SY6522_DEVICE_A)
return;
if((pMB->sy6522.IER & IxR_TIMER1) == 0x00)
return;
uint16_t nPeriod = pMB->sy6522.TIMER1_LATCH.w;
// if(nPeriod <= 0xff) // Timer1L value has been written (but TIMER1H hasn't)
// return;
pMB->nTimerStatus = 1;
// 6522 CLK runs at same speed as 6502 CLK
g_n6522TimerPeriod = nPeriod;
g_bMBTimerIrqActive = true;
g_nMBTimerDevice = pMB->nAY8910Number;
}
//-----------------------------------------------------------------------------
static void StopTimer(SY6522_AY8910* pMB)
{
pMB->nTimerStatus = 0;
g_bMBTimerIrqActive = false;
g_nMBTimerDevice = TIMERDEVICE_INVALID;
}
//-----------------------------------------------------------------------------
static void ResetSY6522(SY6522_AY8910* pMB)
{
memset(&pMB->sy6522,0,sizeof(SY6522));
if(pMB->nTimerStatus)
StopTimer(pMB);
pMB->nAYCurrentRegister = 0;
}
//-----------------------------------------------------------------------------
static void AY8910_Write(uint8_t nDevice, uint8_t nReg, uint8_t nValue, uint8_t nAYDevice)
{
g_bMB_RegAccessedFlag = true;
SY6522_AY8910* pMB = &g_MB[nDevice];
if((nValue & 4) == 0)
{
// RESET: Reset AY8910 only
AY8910_reset(nDevice+2*nAYDevice);
}
else
{
// Determine the AY8910 inputs
int nBDIR = (nValue & 2) ? 1 : 0;
const int nBC2 = 1; // Hardwired to +5V
int nBC1 = nValue & 1;
int nAYFunc = (nBDIR<<2) | (nBC2<<1) | nBC1;
enum {AY_NOP0, AY_NOP1, AY_INACTIVE, AY_READ, AY_NOP4, AY_NOP5, AY_WRITE, AY_LATCH};
switch(nAYFunc)
{
case AY_INACTIVE: // 4: INACTIVE
break;
case AY_READ: // 5: READ FROM PSG (need to set DDRA to input)
break;
case AY_WRITE: // 6: WRITE TO PSG
_AYWriteReg(nDevice+2*nAYDevice, pMB->nAYCurrentRegister, pMB->sy6522.ORA);
break;
case AY_LATCH: // 7: LATCH ADDRESS
// http://www.worldofspectrum.org/forums/showthread.php?t=23327
// Selecting an unused register number above 0x0f puts the AY into a state where
// any values written to the data/address bus are ignored, but can be read back
// within a few tens of thousands of cycles before they decay to zero.
if(pMB->sy6522.ORA <= 0x0F)
pMB->nAYCurrentRegister = pMB->sy6522.ORA & 0x0F;
// else Pro-Mockingboard (clone from HK)
break;
}
}
}
static void UpdateIFR(SY6522_AY8910* pMB)
{
pMB->sy6522.IFR &= 0x7F;
if(pMB->sy6522.IFR & pMB->sy6522.IER & 0x7F)
pMB->sy6522.IFR |= 0x80;
// Now update the IRQ signal from all 6522s
// . OR-sum of all active TIMER1, TIMER2 & SPEECH sources (from all 6522s)
unsigned int bIRQ = 0;
for(unsigned int i=0; i<NUM_SY6522; i++)
bIRQ |= g_MB[i].sy6522.IFR & 0x80;
// NB. Mockingboard generates IRQ on both 6522s:
// . SSI263's IRQ (A/!R) is routed via the 2nd 6522 (at $Cx80) and must generate a 6502 IRQ (not NMI)
// . SC-01's IRQ (A/!R) is also routed via a (2nd?) 6522
// Phasor's SSI263 appears to be wired directly to the 6502's IRQ (ie. not via a 6522)
// . I assume Phasor's 6522s just generate 6502 IRQs (not NMIs)
if (bIRQ)
{
#ifdef APPLE2IX
cpu65_interrupt(IS_6522);
#else
CpuIrqAssert(IS_6522);
#endif
}
else
{
#ifdef APPLE2IX
cpu65_uninterrupt(IS_6522);
#else
CpuIrqDeassert(IS_6522);
#endif
}
}
static void SY6522_Write(uint8_t nDevice, uint8_t nReg, uint8_t nValue)
{
g_bMB_Active = true;
SY6522_AY8910* pMB = &g_MB[nDevice];
switch (nReg)
{
case 0x00: // ORB
{
nValue &= pMB->sy6522.DDRB;
pMB->sy6522.ORB = nValue;
if( (pMB->sy6522.DDRB == 0xFF) && (pMB->sy6522.PCR == 0xB0) )
{
// Votrax speech data
Votrax_Write(nDevice, nValue);
break;
}
if(g_bPhasorEnable)
{
int nAY_CS = (g_nPhasorMode & 1) ? (~(nValue >> 3) & 3) : 1;
if(nAY_CS & 1)
AY8910_Write(nDevice, nReg, nValue, 0);
if(nAY_CS & 2)
AY8910_Write(nDevice, nReg, nValue, 1);
}
else
{
AY8910_Write(nDevice, nReg, nValue, 0);
}
break;
}
case 0x01: // ORA
pMB->sy6522.ORA = nValue & pMB->sy6522.DDRA;
break;
case 0x02: // DDRB
pMB->sy6522.DDRB = nValue;
break;
case 0x03: // DDRA
pMB->sy6522.DDRA = nValue;
break;
case 0x04: // TIMER1L_COUNTER
case 0x06: // TIMER1L_LATCH
pMB->sy6522.TIMER1_LATCH.l = nValue;
break;
case 0x05: // TIMER1H_COUNTER
/* Initiates timer1 & clears time-out of timer1 */
// Clear Timer Interrupt Flag.
pMB->sy6522.IFR &= ~IxR_TIMER1;
UpdateIFR(pMB);
pMB->sy6522.TIMER1_LATCH.h = nValue;
pMB->sy6522.TIMER1_COUNTER.w = pMB->sy6522.TIMER1_LATCH.w;
StartTimer(pMB);
break;
case 0x07: // TIMER1H_LATCH
// Clear Timer1 Interrupt Flag.
pMB->sy6522.TIMER1_LATCH.h = nValue;
pMB->sy6522.IFR &= ~IxR_TIMER1;
UpdateIFR(pMB);
break;
case 0x08: // TIMER2L
pMB->sy6522.TIMER2_LATCH.l = nValue;
break;
case 0x09: // TIMER2H
// Clear Timer2 Interrupt Flag.
pMB->sy6522.IFR &= ~IxR_TIMER2;
UpdateIFR(pMB);
pMB->sy6522.TIMER2_LATCH.h = nValue;
pMB->sy6522.TIMER2_COUNTER.w = pMB->sy6522.TIMER2_LATCH.w;
break;
case 0x0a: // SERIAL_SHIFT
break;
case 0x0b: // ACR
pMB->sy6522.ACR = nValue;
break;
case 0x0c: // PCR - Used for Speech chip only
pMB->sy6522.PCR = nValue;
break;
case 0x0d: // IFR
// - Clear those bits which are set in the lower 7 bits.
// - Can't clear bit 7 directly.
nValue |= 0x80; // Set high bit
nValue ^= 0x7F; // Make mask
pMB->sy6522.IFR &= nValue;
UpdateIFR(pMB);
break;
case 0x0e: // IER
if(!(nValue & 0x80))
{
// Clear those bits which are set in the lower 7 bits.
nValue ^= 0x7F;
pMB->sy6522.IER &= nValue;
UpdateIFR(pMB);
// Check if timer has been disabled.
if(pMB->sy6522.IER & IxR_TIMER1)
break;
if(pMB->nTimerStatus == 0)
break;
// Stop timer
StopTimer(pMB);
}
else
{
// Set those bits which are set in the lower 7 bits.
nValue &= 0x7F;
pMB->sy6522.IER |= nValue;
UpdateIFR(pMB);
StartTimer(pMB);
}
break;
case 0x0f: // ORA_NO_HS
break;
}
}
//-----------------------------------------------------------------------------
static uint8_t SY6522_Read(uint8_t nDevice, uint8_t nReg)
{
// g_bMB_RegAccessedFlag = true;
g_bMB_Active = true;
SY6522_AY8910* pMB = &g_MB[nDevice];
uint8_t nValue = 0x00;
switch (nReg)
{
case 0x00: // ORB
nValue = pMB->sy6522.ORB;
break;
case 0x01: // ORA
nValue = pMB->sy6522.ORA;
break;
case 0x02: // DDRB
nValue = pMB->sy6522.DDRB;
break;
case 0x03: // DDRA
nValue = pMB->sy6522.DDRA;
break;
case 0x04: // TIMER1L_COUNTER
nValue = pMB->sy6522.TIMER1_COUNTER.l;
pMB->sy6522.IFR &= ~IxR_TIMER1; // Also clears Timer1 Interrupt Flag
UpdateIFR(pMB);
break;
case 0x05: // TIMER1H_COUNTER
nValue = pMB->sy6522.TIMER1_COUNTER.h;
break;
case 0x06: // TIMER1L_LATCH
nValue = pMB->sy6522.TIMER1_LATCH.l;
break;
case 0x07: // TIMER1H_LATCH
nValue = pMB->sy6522.TIMER1_LATCH.h;
break;
case 0x08: // TIMER2L
nValue = pMB->sy6522.TIMER2_COUNTER.l;
pMB->sy6522.IFR &= ~IxR_TIMER2; // Also clears Timer2 Interrupt Flag
UpdateIFR(pMB);
break;
case 0x09: // TIMER2H
nValue = pMB->sy6522.TIMER2_COUNTER.h;
break;
case 0x0a: // SERIAL_SHIFT
break;
case 0x0b: // ACR
nValue = pMB->sy6522.ACR;
break;
case 0x0c: // PCR
nValue = pMB->sy6522.PCR;
break;
case 0x0d: // IFR
nValue = pMB->sy6522.IFR;
break;
case 0x0e: // IER
nValue = 0x80; // Datasheet says this is 0x80|IER
break;
case 0x0f: // ORA_NO_HS
nValue = pMB->sy6522.ORA;
break;
}
return nValue;
}
//---------------------------------------------------------------------------
#ifdef APPLE2IX
static void SSI263_Play(unsigned int nPhoneme);
#else
void SSI263_Play(unsigned int nPhoneme);
#endif
#if 0
typedef struct
{
uint8_t DurationPhonome;
uint8_t Inflection; // I10..I3
uint8_t RateInflection;
uint8_t CtrlArtAmp;
uint8_t FilterFreq;
//
uint8_t CurrentMode;
} SSI263A;
#endif
//static SSI263A nSpeechChip;
// Duration/Phonome
const uint8_t DURATION_MODE_MASK = 0xC0;
const uint8_t PHONEME_MASK = 0x3F;
const uint8_t MODE_PHONEME_TRANSITIONED_INFLECTION = 0xC0; // IRQ active
const uint8_t MODE_PHONEME_IMMEDIATE_INFLECTION = 0x80; // IRQ active
const uint8_t MODE_FRAME_IMMEDIATE_INFLECTION = 0x40; // IRQ active
const uint8_t MODE_IRQ_DISABLED = 0x00;
// Rate/Inflection
const uint8_t RATE_MASK = 0xF0;
const uint8_t INFLECTION_MASK_H = 0x08; // I11
const uint8_t INFLECTION_MASK_L = 0x07; // I2..I0
// Ctrl/Art/Amp
const uint8_t CONTROL_MASK = 0x80;
const uint8_t ARTICULATION_MASK = 0x70;
const uint8_t AMPLITUDE_MASK = 0x0F;
static uint8_t SSI263_Read(uint8_t nDevice, uint8_t nReg)
{
SY6522_AY8910* pMB = &g_MB[nDevice];
// Regardless of register, just return inverted A/!R in bit7
// . A/!R is low for IRQ
return pMB->SpeechChip.CurrentMode << 7;
}
static void SSI263_Write(uint8_t nDevice, uint8_t nReg, uint8_t nValue)
{
SY6522_AY8910* pMB = &g_MB[nDevice];
switch(nReg)
{
case SSI_DURPHON:
#if LOG_SSI263
LOG("DUR = 0x%02X, PHON = 0x%02X\n\n", nValue>>6, nValue&PHONEME_MASK);
#endif
// Datasheet is not clear, but a write to DURPHON must clear the IRQ
if(g_bPhasorEnable)
{
#ifdef APPLE2IX
cpu65_uninterrupt(IS_SPEECH);
#else
CpuIrqDeassert(IS_SPEECH);
#endif
}
else
{
pMB->sy6522.IFR &= ~IxR_PERIPHERAL;
UpdateIFR(pMB);
}
pMB->SpeechChip.CurrentMode &= ~1; // Clear SSI263's D7 pin
pMB->SpeechChip.DurationPhonome = nValue;
g_nSSI263Device = nDevice;
// Phoneme output not dependent on CONTROL bit
if(g_bPhasorEnable)
{
if(nValue || (g_nCurrentActivePhoneme<0))
SSI263_Play(nValue & PHONEME_MASK);
}
else
{
SSI263_Play(nValue & PHONEME_MASK);
}
break;
case SSI_INFLECT:
#if LOG_SSI263
LOG("INF = 0x%02X\n", nValue);
#endif
pMB->SpeechChip.Inflection = nValue;
break;
case SSI_RATEINF:
#if LOG_SSI263
LOG("RATE = 0x%02X, INF = 0x%02X\n", nValue>>4, nValue&0x0F);
#endif
pMB->SpeechChip.RateInflection = nValue;
break;
case SSI_CTTRAMP:
#if LOG_SSI263
LOG("CTRL = %d, ART = 0x%02X, AMP=0x%02X\n", nValue>>7, (nValue&ARTICULATION_MASK)>>4, nValue&AMPLITUDE_MASK);
#endif
if((pMB->SpeechChip.CtrlArtAmp & CONTROL_MASK) && !(nValue & CONTROL_MASK)) // H->L
pMB->SpeechChip.CurrentMode = pMB->SpeechChip.DurationPhonome & DURATION_MODE_MASK;
pMB->SpeechChip.CtrlArtAmp = nValue;
break;
case SSI_FILFREQ:
#if LOG_SSI263
LOG("FFREQ = 0x%02X\n", nValue);
#endif
pMB->SpeechChip.FilterFreq = nValue;
break;
default:
break;
}
}
//-------------------------------------
static uint8_t Votrax2SSI263[MAX_VOICES] =
{
0x02, // 00: EH3 jackEt -> E1 bEnt
0x0A, // 01: EH2 Enlist -> EH nEst
0x0B, // 02: EH1 hEAvy -> EH1 bElt
0x00, // 03: PA0 no sound -> PA
0x28, // 04: DT buTTer -> T Tart
0x08, // 05: A2 mAde -> A mAde
0x08, // 06: A1 mAde -> A mAde
0x2F, // 07: ZH aZure -> Z Zero
0x0E, // 08: AH2 hOnest -> AH gOt
0x07, // 09: I3 inhibIt -> I sIx
0x07, // 0A: I2 Inhibit -> I sIx
0x07, // 0B: I1 inhIbit -> I sIx
0x37, // 0C: M Mat -> More
0x38, // 0D: N suN -> N NiNe
0x24, // 0E: B Bag -> B Bag
0x33, // 0F: V Van -> V Very
//
0x32, // 10: CH* CHip -> SCH SHip (!)
0x32, // 11: SH SHop -> SCH SHip
0x2F, // 12: Z Zoo -> Z Zero
0x10, // 13: AW1 lAWful -> AW Office
0x39, // 14: NG thiNG -> NG raNG
0x0F, // 15: AH1 fAther -> AH1 fAther
0x13, // 16: OO1 lOOking -> OO lOOk
0x13, // 17: OO bOOK -> OO lOOk
0x20, // 18: L Land -> L Lift
0x29, // 19: K triCK -> Kit
0x25, // 1A: J* juDGe -> D paiD (!)
0x2C, // 1B: H Hello -> HF Heart
0x26, // 1C: G Get -> KV taG
0x34, // 1D: F Fast -> F Four
0x25, // 1E: D paiD -> D paiD
0x30, // 1F: S paSS -> S Same
//
0x08, // 20: A dAY -> A mAde
0x09, // 21: AY dAY -> AI cAre
0x03, // 22: Y1 Yard -> YI Year
0x1B, // 23: UH3 missIOn -> UH3 nUt
0x0E, // 24: AH mOp -> AH gOt
0x27, // 25: P Past -> P Pen
0x11, // 26: O cOld -> O stOre
0x07, // 27: I pIn -> I sIx
0x16, // 28: U mOve -> U tUne
0x05, // 29: Y anY -> AY plEAse
0x28, // 2A: T Tap -> T Tart
0x1D, // 2B: R Red -> R Roof
0x01, // 2C: E mEEt -> E mEEt
0x23, // 2D: W Win -> W Water
0x0C, // 2E: AE dAd -> AE dAd
0x0D, // 2F: AE1 After -> AE1 After
//
0x10, // 30: AW2 sAlty -> AW Office
0x1A, // 31: UH2 About -> UH2 whAt
0x19, // 32: UH1 Uncle -> UH1 lOve
0x18, // 33: UH cUp -> UH wOnder
0x11, // 34: O2 fOr -> O stOre
0x11, // 35: O1 abOArd -> O stOre
0x14, // 36: IU yOU -> IU yOU
0x14, // 37: U1 yOU -> IU yOU
0x35, // 38: THV THe -> THV THere
0x36, // 39: TH THin -> TH wiTH
0x1C, // 3A: ER bIrd -> ER bIrd
0x0A, // 3B: EH gEt -> EH nEst
0x01, // 3C: E1 bE -> E mEEt
0x10, // 3D: AW cAll -> AW Office
0x00, // 3E: PA1 no sound -> PA
0x00, // 3F: STOP no sound -> PA
};
static void Votrax_Write(uint8_t nDevice, uint8_t nValue)
{
g_bVotraxPhoneme = true;
// !A/R: Acknowledge receipt of phoneme data (signal goes from high to low)
SY6522_AY8910* pMB = &g_MB[nDevice];
pMB->sy6522.IFR &= ~IxR_VOTRAX;
UpdateIFR(pMB);
g_nSSI263Device = nDevice;
SSI263_Play(Votrax2SSI263[nValue & PHONEME_MASK]);
}
//===========================================================================
static void MB_Update()
{
#ifdef APPLE2IX
if (!audio_isAvailable) {
return;
}
static int nNumSamplesError = 0;
if (!MockingboardVoice)
{
nNumSamplesError = 0;
return;
}
if (!MockingboardVoice->bActive || !g_bMB_Active)
{
nNumSamplesError = 0;
return;
}
#else
char szDbg[200];
if (!MockingboardVoice->bActive)
return;
#endif
if (is_fullspeed)
{
// Keep AY reg writes relative to the current 'frame'
// - Required for Ultima3:
// . Tune ends
// . is_fullspeed:=true (disk-spinning) for ~50 frames
// . U3 sets AY_ENABLE:=0xFF (as a side-effect, this sets is_fullspeed:=false)
// o Without this, the write to AY_ENABLE gets ignored (since AY8910's /g_uLastCumulativeCycles/ was last set 50 frame ago)
AY8910UpdateSetCycles();
// TODO:
// If any AY regs have changed then push them out to the AY chip
return;
}
//
if (!g_bMB_RegAccessedFlag)
{
if(!g_nMB_InActiveCycleCount)
{
g_nMB_InActiveCycleCount = cycles_count_total;
}
#ifdef APPLE2IX
else if(cycles_count_total - g_nMB_InActiveCycleCount > (uint64_t)cycles_persec_target/10)
#else
else if(cycles_count_total - g_nMB_InActiveCycleCount > (uint64_t)cycles_persec_target/10)
#endif
{
// After 0.1 sec of Apple time, assume MB is not active
g_bMB_Active = false;
}
}
else
{
g_nMB_InActiveCycleCount = 0;
g_bMB_RegAccessedFlag = false;
g_bMB_Active = true;
}
//
#ifndef APPLE2IX
static unsigned long dwByteOffset = (unsigned long)-1;
static int nNumSamplesError = 0;
#endif
const double n6522TimerPeriod = MB_GetFramePeriod();
const double nIrqFreq = cycles_persec_target / n6522TimerPeriod + 0.5; // Round-up
const int nNumSamplesPerPeriod = (int) ((double)SAMPLE_RATE / nIrqFreq); // Eg. For 60Hz this is 735
int nNumSamples = nNumSamplesPerPeriod + nNumSamplesError; // Apply correction
if(nNumSamples <= 0)
nNumSamples = 0;
if(nNumSamples > 2*nNumSamplesPerPeriod)
nNumSamples = 2*nNumSamplesPerPeriod;
if(nNumSamples)
for(int nChip=0; nChip<NUM_AY8910; nChip++)
AY8910Update(nChip, &ppAYVoiceBuffer[nChip*NUM_VOICES_PER_AY8910], nNumSamples);
//
unsigned long dwDSLockedBufferSize0 = 0;
int16_t *pDSLockedBuffer0 = NULL;
unsigned long dwCurrentPlayCursor, dwCurrentWriteCursor;
#ifdef APPLE2IX
dwCurrentWriteCursor = 0;
int hr = MockingboardVoice->GetCurrentPosition(MockingboardVoice, &dwCurrentPlayCursor);
#else
int hr = MockingboardVoice->GetCurrentPosition(&dwCurrentPlayCursor, &dwCurrentWriteCursor);
#endif
if(FAILED(hr))
return;
#if 0
if(dwByteOffset == (unsigned long)-1)
{
// First time in this func
dwByteOffset = dwCurrentWriteCursor;
}
else
{
// Check that our offset isn't between Play & Write positions
if(dwCurrentWriteCursor > dwCurrentPlayCursor)
{
// |-----PxxxxxW-----|
if((dwByteOffset > dwCurrentPlayCursor) && (dwByteOffset < dwCurrentWriteCursor))
{
#ifndef APPLE2IX
double fTicksSecs = (double)GetTickCount() / 1000.0;
sprintf(szDbg, "%010.3f: [MBUpdt] PC=%08X, WC=%08X, Diff=%08X, Off=%08X, NS=%08X xxx\n", fTicksSecs, dwCurrentPlayCursor, dwCurrentWriteCursor, dwCurrentWriteCursor-dwCurrentPlayCursor, dwByteOffset, nNumSamples);
OutputDebugString(szDbg);
if (g_fh) fprintf(g_fh, szDbg);
#endif
dwByteOffset = dwCurrentWriteCursor;
}
}
else
{
// |xxW----------Pxxx|
if((dwByteOffset > dwCurrentPlayCursor) || (dwByteOffset < dwCurrentWriteCursor))
{
#ifndef APPLE2IX
double fTicksSecs = (double)GetTickCount() / 1000.0;
sprintf(szDbg, "%010.3f: [MBUpdt] PC=%08X, WC=%08X, Diff=%08X, Off=%08X, NS=%08X XXX\n", fTicksSecs, dwCurrentPlayCursor, dwCurrentWriteCursor, dwCurrentWriteCursor-dwCurrentPlayCursor, dwByteOffset, nNumSamples);
OutputDebugString(szDbg);
if (g_fh) fprintf(g_fh, szDbg);
#endif
dwByteOffset = dwCurrentWriteCursor;
}
}
}
int nBytesRemaining = dwByteOffset - dwCurrentPlayCursor;
#else
int nBytesRemaining = (int)dwCurrentPlayCursor;
//LOG("Mockingboard : sound buffer position : %d", nBytesRemaining);
#endif
if(nBytesRemaining < 0)
nBytesRemaining += g_dwDSBufferSize;
// Calc correction factor so that play-buffer doesn't under/overflow
if((unsigned int)nBytesRemaining < g_dwDSBufferSize / 4)
nNumSamplesError += SOUNDCORE_ERROR_INC; // < 0.25 of buffer remaining
else if((unsigned int)nBytesRemaining > g_dwDSBufferSize / 2)
nNumSamplesError -= SOUNDCORE_ERROR_INC; // > 0.50 of buffer remaining
else
nNumSamplesError = 0; // Acceptable amount of data in buffer
#ifdef APPLE2IX
if(nNumSamplesError < -SOUNDCORE_ERROR_MAX) nNumSamplesError = -SOUNDCORE_ERROR_MAX;
if(nNumSamplesError > SOUNDCORE_ERROR_MAX) nNumSamplesError = SOUNDCORE_ERROR_MAX;
static time_t dbg_print = 0;
time_t now = time(NULL);
if (dbg_print != now)
{
dbg_print = now;
LOG("cycles_speaker_feedback:%d nNumSamplesError:%d n6522TimerPeriod:%f nIrqFreq:%f nNumSamplesPerPeriod:%d nNumSamples:%d nBytesRemaining:%d ", cycles_speaker_feedback, nNumSamplesError, n6522TimerPeriod, nIrqFreq, nNumSamplesPerPeriod, nNumSamples, nBytesRemaining);
}
#endif
const double fAttenuation = g_bPhasorEnable ? 2.0/3.0 : 1.0;
for(int i=0; i<nNumSamples; i++)
{
// Mockingboard stereo (all voices on an AY8910 wire-or'ed together)
// L = Address.b7=0, R = Address.b7=1
int nDataL = 0, nDataR = 0;
for(unsigned int j=0; j<NUM_VOICES_PER_AY8910; j++)
{
// Slot4
nDataL += (int) ((double)ppAYVoiceBuffer[0*NUM_VOICES_PER_AY8910+j][i] * fAttenuation);
nDataR += (int) ((double)ppAYVoiceBuffer[1*NUM_VOICES_PER_AY8910+j][i] * fAttenuation);
// Slot5
nDataL += (int) ((double)ppAYVoiceBuffer[2*NUM_VOICES_PER_AY8910+j][i] * fAttenuation);
nDataR += (int) ((double)ppAYVoiceBuffer[3*NUM_VOICES_PER_AY8910+j][i] * fAttenuation);
}
// Cap the superpositioned output
if(nDataL < nWaveDataMin)
nDataL = nWaveDataMin;
else if(nDataL > nWaveDataMax)
nDataL = nWaveDataMax;
if(nDataR < nWaveDataMin)
nDataR = nWaveDataMin;
else if(nDataR > nWaveDataMax)
nDataR = nWaveDataMax;
#ifdef APPLE2IX
g_nMixBuffer[i*g_nMB_NumChannels+0] = (short)nDataL * samplesScale;
g_nMixBuffer[i*g_nMB_NumChannels+1] = (short)nDataR * samplesScale;
#else
g_nMixBuffer[i*g_nMB_NumChannels+0] = (short)nDataL; // L
g_nMixBuffer[i*g_nMB_NumChannels+1] = (short)nDataR; // R
#endif
}
//
const unsigned long originalRequestedBufSize = (unsigned long)nNumSamples*sizeof(short)*g_nMB_NumChannels;
unsigned long requestedBufSize = originalRequestedBufSize;
unsigned long bufIdx = 0;
unsigned long counter = 0;
if (!nNumSamples) {
return;
}
// make at least 2 attempts to submit data (could be at a ringBuffer boundary)
do {
if (MockingboardVoice->Lock(MockingboardVoice, requestedBufSize, &pDSLockedBuffer0, &dwDSLockedBufferSize0)) {
return;
}
{
unsigned long modTwo = (dwDSLockedBufferSize0 % 2);
assert(modTwo == 0);
}
memcpy(pDSLockedBuffer0, &g_nMixBuffer[bufIdx/sizeof(short)], dwDSLockedBufferSize0);
MockingboardVoice->Unlock(MockingboardVoice, dwDSLockedBufferSize0);
bufIdx += dwDSLockedBufferSize0;
requestedBufSize -= dwDSLockedBufferSize0;
assert(requestedBufSize <= originalRequestedBufSize);
++counter;
} while (bufIdx < originalRequestedBufSize && counter < 2);
assert(bufIdx == originalRequestedBufSize);
#ifndef APPLE2IX
dwByteOffset = (dwByteOffset + (unsigned long)nNumSamples*sizeof(short)*g_nMB_NumChannels) % g_dwDSBufferSize;
#endif
#ifdef RIFF_MB
RiffPutSamples(&g_nMixBuffer[0], nNumSamples);
#endif
}
//-----------------------------------------------------------------------------
#ifdef APPLE2IX
static void* SSI263Thread(void *lpParameter)
#else
static unsigned long SSI263Thread(void *lpParameter)
#endif
{
const unsigned long nsecWait = NANOSECONDS_PER_SECOND / audio_backend->systemSettings.sampleRateHz;
const struct timespec wait = { .tv_sec=0, .tv_nsec=nsecWait };
while(1)
{
#ifdef APPLE2IX
int err =0;
pthread_mutex_lock(&mockingboard_mutex);
err = pthread_cond_timedwait(&mockingboard_cond, &mockingboard_mutex, &wait);
if (err && (err != ETIMEDOUT))
{
ERRLOG("OOPS pthread_cond_timedwait");
}
pthread_mutex_unlock(&mockingboard_mutex);
if (quit_event)
{
break;
}
// poll to see if any samples finished ...
bool sample_finished = false;
for (unsigned int i=0; i<MAX_VOICES; i++)
{
if (SSI263Voice[i] && SSI263Voice[i]->bActive)
{
unsigned long status = 0;
SSI263Voice[i]->GetStatus(SSI263Voice[i], &status);
if (status & AUDIO_STATUS_NOTPLAYING)
{
sample_finished = true;
break;
}
}
}
if (!sample_finished)
{
continue;
}
#else
unsigned long dwWaitResult = WaitForMultipleObjects(
g_nNumEvents, // number of handles in array
g_hSSI263Event, // array of event handles
false, // wait until any one is signaled
0);
if((dwWaitResult < 0x0L) || (dwWaitResult > 0x0L+g_nNumEvents-1))
continue;
dwWaitResult -= 0x0L; // Determine event # that signaled
if(dwWaitResult == (g_nNumEvents-1)) // Termination event
break;
#endif
// Phoneme completed playing
if (g_bStopPhoneme)
{
g_bStopPhoneme = false;
continue;
}
#if LOG_SSI263
//if(g_fh) fprintf(g_fh, "IRQ: Phoneme complete (0x%02X)\n\n", g_nCurrentActivePhoneme);
#endif
SSI263Voice[g_nCurrentActivePhoneme]->bActive = false;
g_nCurrentActivePhoneme = -1;
// Phoneme complete, so generate IRQ if necessary
SY6522_AY8910* pMB = &g_MB[g_nSSI263Device];
if(g_bPhasorEnable)
{
if((pMB->SpeechChip.CurrentMode != MODE_IRQ_DISABLED))
{
pMB->SpeechChip.CurrentMode |= 1; // Set SSI263's D7 pin
// Phasor's SSI263.IRQ line appears to be wired directly to IRQ (Bypassing the 6522)
#ifdef APPLE2IX
cpu65_interrupt(IS_SPEECH);
#else
CpuIrqAssert(IS_SPEECH);
#endif
}
}
else
{
if((pMB->SpeechChip.CurrentMode != MODE_IRQ_DISABLED) && (pMB->sy6522.PCR == 0x0C))
{
pMB->sy6522.IFR |= IxR_PERIPHERAL;
UpdateIFR(pMB);
pMB->SpeechChip.CurrentMode |= 1; // Set SSI263's D7 pin
}
}
//
if(g_bVotraxPhoneme && (pMB->sy6522.PCR == 0xB0))
{
// !A/R: Time-out of old phoneme (signal goes from low to high)
pMB->sy6522.IFR |= IxR_VOTRAX;
UpdateIFR(pMB);
g_bVotraxPhoneme = false;
}
}
return 0;
}
//-----------------------------------------------------------------------------
static void SSI263_Play(unsigned int nPhoneme)
{
return; // SSI263 voices are currently deadc0de
#if 0
#if 1
int hr;
if(g_nCurrentActivePhoneme >= 0)
{
// A write to DURPHON before previous phoneme has completed
g_bStopPhoneme = true;
#if !defined(APPLE2IX)
hr = SSI263Voice[g_nCurrentActivePhoneme]->Stop();
#endif
}
g_nCurrentActivePhoneme = nPhoneme;
#ifdef APPLE2IX
hr = SSI263Voice[g_nCurrentActivePhoneme]->Replay(SSI263Voice[g_nCurrentActivePhoneme]);
#else
hr = SSI263Voice[g_nCurrentActivePhoneme]->SetCurrentPosition(0);
if(FAILED(hr))
return;
hr = SSI263Voice[g_nCurrentActivePhoneme]->Play(0,0,0); // Not looping
#endif
if(FAILED(hr))
return;
SSI263Voice[g_nCurrentActivePhoneme]->bActive = true;
#else
int hr;
bool bPause;
if(nPhoneme == 1)
nPhoneme = 2; // Missing this sample, so map to phoneme-2
if(nPhoneme == 0)
{
bPause = true;
}
else
{
// nPhoneme--;
nPhoneme-=2; // Missing phoneme-1
bPause = false;
}
unsigned long dwDSLockedBufferSize = 0; // Size of the locked DirectSound buffer
int16_t* pDSLockedBuffer;
hr = SSI263Voice->Stop();
if(DSGetLock(SSI263Voice, 0, 0, &pDSLockedBuffer, &dwDSLockedBufferSize, NULL, 0))
return;
unsigned int nPhonemeShortLength = g_nPhonemeInfo[nPhoneme].nLength;
unsigned int nPhonemeByteLength = g_nPhonemeInfo[nPhoneme].nLength * sizeof(int16_t);
if(bPause)
{
// 'pause' length is length of 1st phoneme (arbitrary choice, since don't know real length)
memset(pDSLockedBuffer, 0, g_dwMaxPhonemeLen);
}
else
{
memcpy(pDSLockedBuffer, &g_nPhonemeData[g_nPhonemeInfo[nPhoneme].nOffset], nPhonemeByteLength);
memset(&pDSLockedBuffer[nPhonemeShortLength], 0, g_dwMaxPhonemeLen-nPhonemeByteLength);
}
#if 0
DSBPOSITIONNOTIFY PositionNotify;
PositionNotify.dwOffset = nPhonemeByteLength - 1; // End of phoneme
PositionNotify.hEventNotify = g_hSSI263Event[0];
hr = SSI263Voice.lpDSNotify->SetNotificationPositions(1, &PositionNotify);
if(FAILED(hr))
{
DirectSound_ErrorText(hr);
return;
}
#endif
#ifdef APPLE2IX
hr = SSI263Voice->Unlock(SSI263Voice, dwDSLockedBufferSize);
#else
hr = SSI263Voice->Unlock((void*)pDSLockedBuffer, dwDSLockedBufferSize, NULL, 0);
#endif
if(FAILED(hr))
return;
hr = SSI263Voice->Play(0,0,0); // Not looping
if(FAILED(hr))
return;
SSI263Voice.bActive = true;
#endif
#endif
}
//-----------------------------------------------------------------------------
static bool MB_DSInit()
{
#ifdef APPLE2IX
LOG("MB_DSInit : %d\n", g_bMBAvailable);
#else
LOG("MB_DSInit\n", g_bMBAvailable);
#endif
#ifdef NO_DIRECT_X
return false;
#else // NO_DIRECT_X
//
// Create single Mockingboard voice
//
unsigned long dwDSLockedBufferSize = 0; // Size of the locked DirectSound buffer
int16_t* pDSLockedBuffer;
if(!audio_isAvailable)
return false;
int hr = audio_createSoundBuffer(&MockingboardVoice);
LOG("MB_DSInit: DSGetSoundBuffer(), hr=0x%08X\n", (unsigned int)hr);
if(FAILED(hr))
{
LOG("MB: DSGetSoundBuffer failed (%08X)\n",(unsigned int)hr);
return false;
}
SAMPLE_RATE = audio_backend->systemSettings.sampleRateHz;
MB_BUF_SIZE = audio_backend->systemSettings.stereoBufferSizeSamples * audio_backend->systemSettings.bytesPerSample * MB_CHANNELS;
g_dwDSBufferSize = MB_BUF_SIZE;
g_nMixBuffer = malloc(MB_BUF_SIZE / audio_backend->systemSettings.bytesPerSample);
#ifndef APPLE2IX
bool bRes = DSZeroVoiceBuffer(&MockingboardVoice, (char*)"MB", g_dwDSBufferSize);
LOG("MB_DSInit: DSZeroVoiceBuffer(), res=%d\n", bRes ? 1 : 0);
if (!bRes)
return false;
#endif
MockingboardVoice->bActive = true;
// Volume might've been setup from value in Registry
if(!MockingboardVoice->nVolume)
MockingboardVoice->nVolume = DSBVOLUME_MAX;
#if !defined(APPLE2IX)
hr = MockingboardVoice->SetVolume(MockingboardVoice->nVolume);
#endif
LOG("MB_DSInit: SetVolume(), hr=0x%08X\n", (unsigned int)hr);
//---------------------------------
//
// Create SSI263 voice
//
#if 0
g_dwMaxPhonemeLen = 0;
for(int i=0; i<sizeof(g_nPhonemeInfo) / sizeof(PHONEME_INFO); i++)
if(g_dwMaxPhonemeLen < g_nPhonemeInfo[i].nLength)
g_dwMaxPhonemeLen = g_nPhonemeInfo[i].nLength;
g_dwMaxPhonemeLen *= sizeof(int16_t);
#endif
return true;
#if 0
#ifdef APPLE2IX
int err = 0;
if ((err = pthread_mutex_init(&mockingboard_mutex, NULL)))
{
ERRLOG("OOPS pthread_mutex_init");
}
if ((err = pthread_cond_init(&mockingboard_cond, NULL)))
{
ERRLOG("OOPS pthread_cond_init");
}
#else
g_hSSI263Event[0] = CreateEvent(NULL, // lpEventAttributes
false, // bManualReset (false = auto-reset)
false, // bInitialState (false = non-signaled)
NULL); // lpName
LOG("MB_DSInit: CreateEvent(), g_hSSI263Event[0]=0x%08X\n", (uint32_t)g_hSSI263Event[0]);
g_hSSI263Event[1] = CreateEvent(NULL, // lpEventAttributes
false, // bManualReset (false = auto-reset)
false, // bInitialState (false = non-signaled)
NULL); // lpName
LOG("MB_DSInit: CreateEvent(), g_hSSI263Event[1]=0x%08X\n", (uint32_t)g_hSSI263Event[1]);
if((g_hSSI263Event[0] == NULL) || (g_hSSI263Event[1] == NULL))
{
LOG("SSI263: CreateEvent failed\n");
return false;
}
#endif
for(int i=0; i<MAX_VOICES; i++)
{
unsigned int nPhoneme = i;
bool bPause;
if(nPhoneme == 1)
nPhoneme = 2; // Missing this sample, so map to phoneme-2
if(nPhoneme == 0)
{
bPause = true;
}
else
{
// nPhoneme--;
nPhoneme-=2; // Missing phoneme-1
bPause = false;
}
unsigned int nPhonemeByteLength = g_nPhonemeInfo[nPhoneme].nLength * audio_backend->systemSettings.bytesPerSample;
if (nPhonemeByteLength > audio_backend->systemSettings.monoBufferSizeSamples) {
RELEASE_ERRLOG("!!!!!!!!!!!!!!!!!!!!! phoneme length > buffer size !!!!!!!!!!!!!!!!!!!!!");
#warning ^^^^^^^^^^ require vigilence here around this change ... we used to be able to specify the exact buffer size ...
}
// NB. DSBCAPS_LOCSOFTWARE required for
hr = audio_createSoundBuffer(&SSI263Voice[i], 1);
LOG("MB_DSInit: (%02d) DSGetSoundBuffer(), hr=0x%08X\n", i, (unsigned int)hr);
if(FAILED(hr))
{
LOG("SSI263: DSGetSoundBuffer failed (%08X)\n",(unsigned int)hr);
return false;
}
hr = SSI263Voice[i]->Lock(SSI263Voice[i], 0, &pDSLockedBuffer, &dwDSLockedBufferSize);
//LOG("MB_DSInit: (%02d) DSGetLock(), res=%d\n", i, hr ? 1 : 0); // WARNING: Lock acquired && doing heavy-weight logging
if(FAILED(hr))
{
LOG("SSI263: DSGetLock failed (%08X)\n",(unsigned int)hr);
return false;
}
if(bPause)
{
// 'pause' length is length of 1st phoneme (arbitrary choice, since don't know real length)
#ifdef APPLE2IX
memset(pDSLockedBuffer, 0x00, dwDSLockedBufferSize);
#else
memset(pDSLockedBuffer, 0x00, nPhonemeByteLength);
#endif
}
else
{
#ifdef APPLE2IX
memcpy(pDSLockedBuffer, &g_nPhonemeData[g_nPhonemeInfo[nPhoneme].nOffset], dwDSLockedBufferSize);
#else
memcpy(pDSLockedBuffer, &g_nPhonemeData[g_nPhonemeInfo[nPhoneme].nOffset], nPhonemeByteLength);
#endif
}
#ifdef APPLE2IX
// Assume no way to get notification of sound finished, instead we will poll from mockingboard thread ...
#else
hr = SSI263Voice[i]->QueryInterface(IID_IDirectSoundNotify, (void **)&SSI263Voice[i]->lpDSNotify);
//LOG("MB_DSInit: (%02d) QueryInterface(), hr=0x%08X\n", i, hr); // WARNING: Lock acquired && doing heavy-weight logging
if(FAILED(hr))
{
LOG("SSI263: QueryInterface failed (%08X)\n",hr);
return false;
}
DSBPOSITIONNOTIFY PositionNotify;
// PositionNotify.dwOffset = nPhonemeByteLength - 1; // End of buffer
PositionNotify.dwOffset = DSBPN_OFFSETSTOP; // End of buffer
PositionNotify.hEventNotify = g_hSSI263Event[0];
hr = SSI263Voice[i]->lpDSNotify->SetNotificationPositions(1, &PositionNotify);
//LOG("MB_DSInit: (%02d) SetNotificationPositions(), hr=0x%08X\n", i, hr); // WARNING: Lock acquired && doing heavy-weight logging
if(FAILED(hr))
{
LOG("SSI263: SetNotifyPos failed (%08X)\n",hr);
return false;
}
#endif
#ifdef APPLE2IX
hr = SSI263Voice[i]->UnlockStaticBuffer(SSI263Voice[i], dwDSLockedBufferSize);
#else
hr = SSI263Voice[i]->Unlock((void*)pDSLockedBuffer, dwDSLockedBufferSize, NULL, 0);
#endif
LOG("MB_DSInit: (%02d) Unlock(),hr=0x%08X\n", i, (unsigned int)hr);
if(FAILED(hr))
{
LOG("SSI263: DSUnlock failed (%08X)\n",(unsigned int)hr);
return false;
}
SSI263Voice[i]->bActive = false;
SSI263Voice[i]->nVolume = MockingboardVoice->nVolume; // Use same volume as MB
#if !defined(APPLE2IX)
hr = SSI263Voice[i]->SetVolume(SSI263Voice[i]->nVolume);
#endif
LOG("MB_DSInit: (%02d) SetVolume(), hr=0x%08X\n", i, (unsigned int)hr);
}
//
unsigned long dwThreadId;
g_hThread = CreateThread(NULL, // lpThreadAttributes
0, // dwStackSize
SSI263Thread,
NULL, // lpParameter
0, // dwCreationFlags : 0 = Run immediately
&dwThreadId); // lpThreadId
LOG("MB_DSInit: CreateThread(), g_hThread=0x%08X\n", (uint32_t)g_hThread);
bool bRes2 = SetThreadPriority(g_hThread, THREAD_PRIORITY_TIME_CRITICAL);
LOG("MB_DSInit: SetThreadPriority(), bRes=%d\n", bRes2 ? 1 : 0);
return true;
#endif
#endif // NO_DIRECT_X
}
static void MB_DSUninit()
{
if(g_hThread)
{
unsigned long dwExitCode;
#ifdef APPLE2IX
quit_event = true;
pthread_cond_signal(&mockingboard_cond);
#else
SetEvent(g_hSSI263Event[g_nNumEvents-1]); // Signal to thread that it should exit
#endif
do
{
if(GetExitCodeThread(g_hThread, &dwExitCode))
{
if(dwExitCode == STILL_ACTIVE)
usleep(10);
else
break;
}
}
while(1);
#ifdef APPLE2IX
g_hThread = 0;
pthread_mutex_destroy(&mockingboard_mutex);
pthread_cond_destroy(&mockingboard_cond);
#else
CloseHandle(g_hThread);
g_hThread = NULL;
#endif
}
//
if(MockingboardVoice && MockingboardVoice->bActive)
{
#if !defined(APPLE2IX)
MockingboardVoice->Stop();
#endif
MockingboardVoice->bActive = false;
}
audio_destroySoundBuffer(&MockingboardVoice);
//
for(int i=0; i<MAX_VOICES; i++)
{
if(SSI263Voice[i] && SSI263Voice[i]->bActive)
{
#if !defined(APPLE2IX)
SSI263Voice[i]->Stop();
#endif
SSI263Voice[i]->bActive = false;
}
audio_destroySoundBuffer(&SSI263Voice[i]);
}
//
FREE(g_nMixBuffer);
#ifndef APPLE2IX
if(g_hSSI263Event[0])
{
CloseHandle(g_hSSI263Event[0]);
g_hSSI263Event[0] = NULL;
}
if(g_hSSI263Event[1])
{
CloseHandle(g_hSSI263Event[1]);
g_hSSI263Event[1] = NULL;
}
#endif
}
//=============================================================================
//
// ----- ALL GLOBALLY ACCESSIBLE FUNCTIONS ARE BELOW THIS LINE -----
//
//=============================================================================
void MB_Initialize()
{
#ifdef APPLE2IX
assert(pthread_self() == cpu_thread_id);
memset(SSI263Voice, 0x0, sizeof(AudioBuffer_s)*MAX_VOICES);
#endif
if (g_bDisableDirectSoundMockingboard)
{
//MockingboardVoice->bMute = true;
g_SoundcardType = CT_Empty;
}
else
{
memset(&g_MB,0,sizeof(g_MB));
g_bMBAvailable = MB_DSInit();
if (!g_bMBAvailable) {
//MockingboardVoice->bMute = true;
g_SoundcardType = CT_Empty;
return;
}
int i;
for(i=0; i<NUM_VOICES; i++)
{
#ifdef APPLE2IX
ppAYVoiceBuffer[i] = malloc(sizeof(short) * SAMPLE_RATE); // Buffer can hold a max of 1 seconds worth of samples
#else
ppAYVoiceBuffer[i] = new short [SAMPLE_RATE]; // Buffer can hold a max of 1 seconds worth of samples
#endif
}
AY8910_InitAll((int)cycles_persec_target, SAMPLE_RATE);
LOG("MB_Initialize: AY8910_InitAll()\n");
for(i=0; i<NUM_AY8910; i++)
g_MB[i].nAY8910Number = i;
//
LOG("MB_Initialize: MB_DSInit(), g_bMBAvailable=%d\n", g_bMBAvailable);
MB_Reset();
LOG("MB_Initialize: MB_Reset()\n");
}
}
//-----------------------------------------------------------------------------
// NB. Called when /cycles_persec_target/ changes
void MB_Reinitialize()
{
AY8910_InitClock((int)cycles_persec_target, SAMPLE_RATE);
}
//-----------------------------------------------------------------------------
void MB_Destroy()
{
assert(pthread_self() == cpu_thread_id);
MB_DSUninit();
for(int i=0; i<NUM_VOICES; i++)
{
#ifdef APPLE2IX
FREE(ppAYVoiceBuffer[i]);
#else
delete [] ppAYVoiceBuffer[i];
#endif
}
}
void MB_SetEnabled(bool enabled) {
g_bDisableDirectSoundMockingboard = !enabled;
}
bool MB_ISEnabled(void) {
return (MockingboardVoice != NULL);
}
//-----------------------------------------------------------------------------
static void ResetState()
{
g_n6522TimerPeriod = 0;
g_nMBTimerDevice = TIMERDEVICE_INVALID;
g_uLastCumulativeCycles = 0;
g_nSSI263Device = 0;
g_nCurrentActivePhoneme = -1;
g_bStopPhoneme = false;
g_bVotraxPhoneme = false;
g_nMB_InActiveCycleCount = 0;
g_bMB_RegAccessedFlag = false;
g_bMB_Active = false;
//g_bMBAvailable = false;
//g_SoundcardType = CT_Empty;
//g_bPhasorEnable = false;
g_nPhasorMode = 0;
}
void MB_Reset()
{
if(!audio_isAvailable)
return;
for(int i=0; i<NUM_AY8910; i++)
{
ResetSY6522(&g_MB[i]);
AY8910_reset(i);
}
ResetState();
MB_Reinitialize(); // Reset CLK for AY8910s
}
//-----------------------------------------------------------------------------
#ifdef APPLE2IX
#define MemReadFloatingBus floating_bus
#define nAddr ea
GLUE_C_READ(MB_Read)
#else
static uint8_t MB_Read(uint16_t PC, uint16_t nAddr, uint8_t bWrite, uint8_t nValue, unsigned long nCyclesLeft)
#endif
{
MB_UpdateCycles();
#ifdef _DEBUG
if(!IS_APPLE2 && !MemCheckSLOTCXROM())
{
assert(0); // Card ROM disabled, so IORead_Cxxx() returns the internal ROM
return mem[nAddr];
}
if(g_SoundcardType == CT_Empty)
{
assert(0); // Card unplugged, so IORead_Cxxx() returns the floating bus
return MemReadFloatingBus();
}
#endif
uint8_t nMB = ((nAddr>>8)&0xf) - SLOT4;
uint8_t nOffset = nAddr&0xff;
if(g_bPhasorEnable)
{
if(nMB != 0) // Slot4 only
{
return MemReadFloatingBus();
}
int CS;
if(g_nPhasorMode & 1)
CS = ( ( nAddr & 0x80 ) >> 6 ) | ( ( nAddr & 0x10 ) >> 4 ); // 0, 1, 2 or 3
else // Mockingboard Mode
CS = ( ( nAddr & 0x80 ) >> 7 ) + 1; // 1 or 2
uint8_t nRes = 0;
if(CS & 1)
nRes |= SY6522_Read(nMB*NUM_DEVS_PER_MB + SY6522_DEVICE_A, nAddr&0xf);
if(CS & 2)
nRes |= SY6522_Read(nMB*NUM_DEVS_PER_MB + SY6522_DEVICE_B, nAddr&0xf);
bool bAccessedDevice = (CS & 3) ? true : false;
if((nOffset >= SSI263_Offset) && (nOffset <= (SSI263_Offset+0x05)))
{
nRes |= SSI263_Read(nMB, nAddr&0xf);
bAccessedDevice = true;
}
return bAccessedDevice ? nRes : MemReadFloatingBus();
}
if(nOffset <= (SY6522A_Offset+0x0F))
{
return SY6522_Read(nMB*NUM_DEVS_PER_MB + SY6522_DEVICE_A, nAddr&0xf);
}
else if((nOffset >= SY6522B_Offset) && (nOffset <= (SY6522B_Offset+0x0F)))
{
return SY6522_Read(nMB*NUM_DEVS_PER_MB + SY6522_DEVICE_B, nAddr&0xf);
}
else if((nOffset >= SSI263_Offset) && (nOffset <= (SSI263_Offset+0x05)))
{
return SSI263_Read(nMB, nAddr&0xf);
}
else
{
return MemReadFloatingBus();
}
}
//-----------------------------------------------------------------------------
#ifdef APPLE2IX
#define nValue b
GLUE_C_WRITE(MB_Write)
#else
static uint8_t MB_Write(uint16_t PC, uint16_t nAddr, uint8_t bWrite, uint8_t nValue, unsigned long nCyclesLeft)
#endif
{
MB_UpdateCycles();
#ifdef _DEBUG
if(!IS_APPLE2 && !MemCheckSLOTCXROM())
{
assert(0); // Card ROM disabled, so IORead_Cxxx() returns the internal ROM
#ifdef APPLE2IX
return;
#else
return 0;
#endif
}
if(g_SoundcardType == CT_Empty)
{
assert(0); // Card unplugged, so IORead_Cxxx() returns the floating bus
#ifdef APPLE2IX
return;
#else
return 0;
#endif
}
#endif
uint8_t nMB = ((nAddr>>8)&0xf) - SLOT4;
uint8_t nOffset = nAddr&0xff;
if(g_bPhasorEnable)
{
if(nMB != 0) // Slot4 only
{
#ifdef APPLE2IX
return;
#else
return 0;
#endif
}
int CS;
if(g_nPhasorMode & 1)
CS = ( ( nAddr & 0x80 ) >> 6 ) | ( ( nAddr & 0x10 ) >> 4 ); // 0, 1, 2 or 3
else // Mockingboard Mode
CS = ( ( nAddr & 0x80 ) >> 7 ) + 1; // 1 or 2
if(CS & 1)
SY6522_Write(nMB*NUM_DEVS_PER_MB + SY6522_DEVICE_A, nAddr&0xf, nValue);
if(CS & 2)
SY6522_Write(nMB*NUM_DEVS_PER_MB + SY6522_DEVICE_B, nAddr&0xf, nValue);
if((nOffset >= SSI263_Offset) && (nOffset <= (SSI263_Offset+0x05)))
SSI263_Write(nMB*2+1, nAddr&0xf, nValue); // Second 6522 is used for speech chip
#ifdef APPLE2IX
return;
#else
return 0;
#endif
}
if(nOffset <= (SY6522A_Offset+0x0F))
SY6522_Write(nMB*NUM_DEVS_PER_MB + SY6522_DEVICE_A, nAddr&0xf, nValue);
else if((nOffset >= SY6522B_Offset) && (nOffset <= (SY6522B_Offset+0x0F)))
SY6522_Write(nMB*NUM_DEVS_PER_MB + SY6522_DEVICE_B, nAddr&0xf, nValue);
else if((nOffset >= SSI263_Offset) && (nOffset <= (SSI263_Offset+0x05)))
SSI263_Write(nMB*2+1, nAddr&0xf, nValue); // Second 6522 is used for speech chip
#ifdef APPLE2IX
return;
#else
return 0;
#endif
}
//-----------------------------------------------------------------------------
#ifdef APPLE2IX
GLUE_C_READ(PhasorIO)
#else
static uint8_t PhasorIO(uint16_t PC, uint16_t nAddr, uint8_t bWrite, uint8_t nValue, unsigned long nCyclesLeft)
#endif
{
if(!g_bPhasorEnable)
{
return MemReadFloatingBus();
}
if(g_nPhasorMode < 2)
g_nPhasorMode = nAddr & 1;
double fCLK = (nAddr & 4) ? CLK_6502*2 : CLK_6502;
AY8910_InitClock((int)fCLK, SAMPLE_RATE);
return MemReadFloatingBus();
}
//-----------------------------------------------------------------------------
#ifdef APPLE2IX
// HACK NOTE TODO FIXME : hardcoded for now (until we have dynamic emulation for other cards in these slots) ...
//SS_CARDTYPE g_Slot4 = CT_Phasor;
//SS_CARDTYPE g_Slot5 = CT_Empty;
SS_CARDTYPE g_Slot4 = CT_MockingboardC;
SS_CARDTYPE g_Slot5 = CT_MockingboardC;
#define IO_Null NULL
void mb_io_initialize(unsigned int slot4, unsigned int slot5)
{
MB_InitializeIO(NULL, slot4, slot5);
}
//typedef uint8_t (*iofunction)(uint16_t nPC, uint16_t nAddr, uint8_t nWriteFlag, uint8_t nWriteValue, unsigned long nCyclesLeft);
typedef void (*iofunction)();
static void RegisterIoHandler(unsigned int uSlot, iofunction IOReadC0, iofunction IOWriteC0, iofunction IOReadCx, iofunction IOWriteCx, void *unused_lpSlotParameter, uint8_t* unused_pExpansionRom)
{
// card softswitches
unsigned int base_addr = 0xC080 + (uSlot<<4); // uSlot == 4 => 0xC0C0 , uSlot == 5 => 0xC0D0
if (IOReadC0)
{
assert(IOWriteC0);
for (unsigned int i = 0; i < 16; i++)
{
cpu65_vmem_r[base_addr+i] = IOReadC0;
cpu65_vmem_w[base_addr+i] = IOWriteC0;
}
}
// card page
base_addr = 0xC000 + (uSlot<<8); // uSlot == 4 => 0xC400 , uSlot == 5 => 0xC500
for (unsigned int i = 0; i < 0x100; i++)
{
//cpu65_vmem_r[base_addr+i] = IOReadCx; -- CANNOT DO THIS HERE -- DEPENDS ON cxrom softswitch
cpu65_vmem_w[base_addr+i] = IOWriteCx;
}
}
#endif
void MB_InitializeIO(char *unused_pCxRomPeripheral, unsigned int uSlot4, unsigned int uSlot5)
{
// Mockingboard: Slot 4 & 5
// Phasor : Slot 4
// <other> : Slot 4 & 5
if (g_Slot4 != CT_MockingboardC && g_Slot4 != CT_Phasor)
{
MB_SetSoundcardType(CT_Empty);
return;
}
if (g_Slot4 == CT_MockingboardC)
RegisterIoHandler(uSlot4, IO_Null, IO_Null, MB_Read, MB_Write, NULL, NULL);
else // Phasor
RegisterIoHandler(uSlot4, PhasorIO, PhasorIO, MB_Read, MB_Write, NULL, NULL);
if (g_Slot5 == CT_MockingboardC)
RegisterIoHandler(uSlot5, IO_Null, IO_Null, MB_Read, MB_Write, NULL, NULL);
MB_SetSoundcardType(g_Slot4);
}
//-----------------------------------------------------------------------------
void MB_Mute()
{
if(g_SoundcardType == CT_Empty)
return;
if(MockingboardVoice->bActive && !MockingboardVoice->bMute)
{
#if !defined(APPLE2IX)
MockingboardVoice->SetVolume(DSBVOLUME_MIN);
#endif
MockingboardVoice->bMute = true;
}
#if !defined(APPLE2IX)
if(g_nCurrentActivePhoneme >= 0)
SSI263Voice[g_nCurrentActivePhoneme]->SetVolume(DSBVOLUME_MIN);
#endif
}
//-----------------------------------------------------------------------------
void MB_Demute()
{
if(g_SoundcardType == CT_Empty)
return;
if(MockingboardVoice->bActive && MockingboardVoice->bMute)
{
#if !defined(APPLE2IX)
MockingboardVoice->SetVolume(MockingboardVoice->nVolume);
#endif
MockingboardVoice->bMute = false;
}
#if !defined(APPLE2IX)
if(g_nCurrentActivePhoneme >= 0)
SSI263Voice[g_nCurrentActivePhoneme]->SetVolume(SSI263Voice[g_nCurrentActivePhoneme]->nVolume);
#endif
}
//-----------------------------------------------------------------------------
// Called by CpuExecute() before doing CPU emulation
void MB_StartOfCpuExecute()
{
g_uLastCumulativeCycles = cycles_count_total;
}
// Called by ContinueExecution() at the end of every video frame
void MB_EndOfVideoFrame()
{
SCOPE_TRACE_AUDIO("MB_EndOfVideoFrame");
if(g_SoundcardType == CT_Empty)
return;
if (!g_bMBAvailable) {
return;
}
if(!g_bMBTimerIrqActive)
MB_Update();
}
//-----------------------------------------------------------------------------
// Called by CpuExecute() after every N opcodes (N = ~1000 @ 1MHz)
void MB_UpdateCycles(void)
{
SCOPE_TRACE_AUDIO("MB_UpdateCycles");
if(g_SoundcardType == CT_Empty)
return;
timing_checkpoint_cycles();
uint64_t uCycles = cycles_count_total - g_uLastCumulativeCycles;
g_uLastCumulativeCycles = cycles_count_total;
//assert(uCycles < 0x10000);
if (uCycles >= 0x10000) {
printf("OOPS!!! Mockingboard failed assert!\n");
return;
}
uint16_t nClocks = (uint16_t) uCycles;
for(unsigned int i=0; i<NUM_SY6522; i++)
{
SY6522_AY8910* pMB = &g_MB[i];
uint16_t OldTimer1 = pMB->sy6522.TIMER1_COUNTER.w;
#ifndef APPLE2IX
uint16_t OldTimer2 = pMB->sy6522.TIMER2_COUNTER.w;
#endif
pMB->sy6522.TIMER1_COUNTER.w -= nClocks;
pMB->sy6522.TIMER2_COUNTER.w -= nClocks;
// Check for counter underflow
bool bTimer1Underflow = (!(OldTimer1 & 0x8000) && (pMB->sy6522.TIMER1_COUNTER.w & 0x8000));
#ifndef APPLE2IX
bool bTimer2Underflow = (!(OldTimer2 & 0x8000) && (pMB->sy6522.TIMER2_COUNTER.w & 0x8000));
#endif
if( bTimer1Underflow && (g_nMBTimerDevice == i) && g_bMBTimerIrqActive )
{
#ifdef _DEBUG
g_uTimer1IrqCount++; // DEBUG
#endif
pMB->sy6522.IFR |= IxR_TIMER1;
UpdateIFR(pMB);
if((pMB->sy6522.ACR & RUNMODE) == RM_ONESHOT)
{
// One-shot mode
// - Phasor's playback code uses one-shot mode
// - Willy Byte sets to one-shot to stop the timer IRQ
StopTimer(pMB);
}
else
{
// Free-running mode
// - Ultima4/5 change ACCESS_TIMER1 after a couple of IRQs into tune
pMB->sy6522.TIMER1_COUNTER.w = pMB->sy6522.TIMER1_LATCH.w;
StartTimer(pMB);
}
MB_Update();
}
else if ( bTimer1Underflow
&& !g_bMBTimerIrqActive // StopTimer() has been called
&& (pMB->sy6522.IFR & IxR_TIMER1) // IRQ
&& ((pMB->sy6522.ACR & RUNMODE) == RM_ONESHOT) ) // One-shot mode
{
// Fix for Willy Byte - need to confirm that 6522 really does this!
// . It never accesses IER/IFR/TIMER1 regs to clear IRQ
pMB->sy6522.IFR &= ~IxR_TIMER1; // Deassert the TIMER IRQ
UpdateIFR(pMB);
}
}
}
//-----------------------------------------------------------------------------
SS_CARDTYPE MB_GetSoundcardType()
{
return g_SoundcardType;
}
void MB_SetSoundcardType(SS_CARDTYPE NewSoundcardType)
{
// if ((NewSoundcardType == SC_UNINIT) || (g_SoundcardType == NewSoundcardType))
if (g_SoundcardType == NewSoundcardType)
return;
g_SoundcardType = NewSoundcardType;
if(g_SoundcardType == CT_Empty)
MB_Mute();
g_bPhasorEnable = (g_SoundcardType == CT_Phasor);
}
//-----------------------------------------------------------------------------
double MB_GetFramePeriod()
{
return (g_bMBTimerIrqActive||(g_MB[0].sy6522.IFR & IxR_TIMER1)) ? (double)g_n6522TimerPeriod : g_f6522TimerPeriod_NoIRQ;
}
bool MB_IsActive()
{
if(!MockingboardVoice->bActive)
return false;
// Ignore /g_bMBTimerIrqActive/ as timer's irq handler will access 6522 regs affecting /g_bMB_Active/
return g_bMB_Active;
}
//-----------------------------------------------------------------------------
#if defined(APPLE2IX)
void MB_SetVolumeZeroToTen(unsigned long goesToTen) {
samplesScale = goesToTen/10.f;
}
#else
static long NewVolume(unsigned long dwVolume, unsigned long dwVolumeMax)
{
float fVol = (float) dwVolume / (float) dwVolumeMax; // 0.0=Max, 1.0=Min
return (long) ((float) DSBVOLUME_MIN * fVol);
}
void MB_SetVolume(unsigned long dwVolume, unsigned long dwVolumeMax)
{
MockingboardVoice->nVolume = NewVolume(dwVolume, dwVolumeMax);
#if !defined(APPLE2IX)
if(MockingboardVoice->bActive)
MockingboardVoice->SetVolume(MockingboardVoice->nVolume);
#endif
}
#endif
//===========================================================================
unsigned long MB_GetSnapshot(SS_CARD_MOCKINGBOARD* pSS, unsigned long dwSlot)
{
#ifdef APPLE2IX
// Saving and loading state currently unimplemented
return 0;
#else
pSS->Hdr.UnitHdr.dwLength = sizeof(SS_CARD_DISK2);
pSS->Hdr.UnitHdr.dwVersion = MAKE_VERSION(1,0,0,0);
pSS->Hdr.dwSlot = dwSlot;
pSS->Hdr.dwType = CT_MockingboardC;
unsigned int nMbCardNum = dwSlot - SLOT4;
unsigned int nDeviceNum = nMbCardNum*2;
SY6522_AY8910* pMB = &g_MB[nDeviceNum];
for(unsigned int i=0; i<MB_UNITS_PER_CARD; i++)
{
memcpy(&pSS->Unit[i].RegsSY6522, &pMB->sy6522, sizeof(SY6522));
memcpy(&pSS->Unit[i].RegsAY8910, AY8910_GetRegsPtr(nDeviceNum), 16);
memcpy(&pSS->Unit[i].RegsSSI263, &pMB->SpeechChip, sizeof(SSI263A));
pSS->Unit[i].nAYCurrentRegister = pMB->nAYCurrentRegister;
nDeviceNum++;
pMB++;
}
return 0;
#endif
}
unsigned long MB_SetSnapshot(SS_CARD_MOCKINGBOARD* pSS, unsigned long dwSlot_unused)
{
#ifdef APPLE2IX
// Saving and loading state currently unimplemented
return 0;
#else
if(pSS->Hdr.UnitHdr.dwVersion != MAKE_VERSION(1,0,0,0))
return -1;
unsigned int nMbCardNum = pSS->Hdr.dwSlot - SLOT4;
unsigned int nDeviceNum = nMbCardNum*2;
SY6522_AY8910* pMB = &g_MB[nDeviceNum];
g_nSSI263Device = 0;
g_nCurrentActivePhoneme = -1;
for(unsigned int i=0; i<MB_UNITS_PER_CARD; i++)
{
memcpy(&pMB->sy6522, &pSS->Unit[i].RegsSY6522, sizeof(SY6522));
memcpy(AY8910_GetRegsPtr(nDeviceNum), &pSS->Unit[i].RegsAY8910, 16);
memcpy(&pMB->SpeechChip, &pSS->Unit[i].RegsSSI263, sizeof(SSI263A));
pMB->nAYCurrentRegister = pSS->Unit[i].nAYCurrentRegister;
StartTimer(pMB); // Attempt to start timer
//
// Crude - currently only support a single speech chip
// FIX THIS:
// . Speech chip could be Votrax instead
// . Is this IRQ compatible with Phasor?
if(pMB->SpeechChip.DurationPhonome)
{
g_nSSI263Device = nDeviceNum;
if((pMB->SpeechChip.CurrentMode != MODE_IRQ_DISABLED) && (pMB->sy6522.PCR == 0x0C) && (pMB->sy6522.IER & IxR_PERIPHERAL))
{
pMB->sy6522.IFR |= IxR_PERIPHERAL;
UpdateIFR(pMB);
pMB->SpeechChip.CurrentMode |= 1; // Set SSI263's D7 pin
}
}
nDeviceNum++;
pMB++;
}
return 0;
#endif
}
Reference in New Issue View Git Blame Copy Permalink