diff options
Diffstat (limited to 'sid/sidplay-libs-2.1.0/libsidplay/src/player.cpp')
| -rw-r--r-- | sid/sidplay-libs-2.1.0/libsidplay/src/player.cpp | 945 |
1 files changed, 0 insertions, 945 deletions
diff --git a/sid/sidplay-libs-2.1.0/libsidplay/src/player.cpp b/sid/sidplay-libs-2.1.0/libsidplay/src/player.cpp deleted file mode 100644 index 38b612c0..00000000 --- a/sid/sidplay-libs-2.1.0/libsidplay/src/player.cpp +++ /dev/null @@ -1,945 +0,0 @@ -/*************************************************************************** - player.cpp - Main Library Code - ------------------- - begin : Fri Jun 9 2000 - copyright : (C) 2000 by Simon White - email : s_a_white@email.com - ***************************************************************************/ -/*************************************************************************** - * * - * 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. * - * * - ***************************************************************************/ -/*************************************************************************** - * $Log: player.cpp,v $ - * Revision 1.57 2002/12/14 10:10:30 s_a_white - * Kernal Mod: Bypass screen clear as we don't have a screen. Fix setting - * of PAL/NTSC flag for real c64 mode. - * - * Revision 1.56 2002/12/13 22:01:54 s_a_white - * Kernel mods: Memory now bypassed by upping the start address so the - * end or ram is found instantly. Basic cold/warm start address points to a - * busy loop to prevent undersiable side effects (this may change later). - * - * Revision 1.55 2002/11/27 00:16:51 s_a_white - * Make sure driver info gets reset and exported properly. - * - * Revision 1.54 2002/11/25 21:09:41 s_a_white - * Reset address for old sidplay1 modes now directly passed to the CPU. This - * prevents tune corruption and banking issues for the different modes. - * - * Revision 1.53 2002/11/21 19:53:58 s_a_white - * CPU nolonger a special case. It now uses the event scheduler like all the - * other components. - * - * Revision 1.52 2002/11/20 21:44:03 s_a_white - * Fix fake IRQ to properly obtain next address. - * - * Revision 1.51 2002/11/19 22:55:18 s_a_white - * Sidplay1 modes modified to make them nolonger require the psid driver. - * Full c64 kernal supported in real c64 mode. - * - * Revision 1.50 2002/11/01 17:36:01 s_a_white - * Frame based support for old sidplay1 modes. - * - * Revision 1.49 2002/10/20 08:58:36 s_a_white - * Modify IO map so psiddrv can detect special cases. - * - * Revision 1.48 2002/10/15 18:20:54 s_a_white - * Make all addresses from ea31 to ea7d valid IRQ exit points. This - * approximates the functionality of a real C64. - * - * Revision 1.47 2002/10/02 19:43:47 s_a_white - * RSID support. - * - * Revision 1.46 2002/09/17 17:02:41 s_a_white - * Fixed location of kernel IRQ exit code. - * - * Revision 1.45 2002/09/12 21:01:30 s_a_white - * Added support for simulating the random delay before the user loads a - * program on a real C64. - * - * Revision 1.44 2002/09/09 18:01:30 s_a_white - * Prevent m_info driver details getting modified when C64 crashes. - * - * Revision 1.43 2002/08/20 23:21:41 s_a_white - * Setup default sample format. - * - * Revision 1.42 2002/04/14 21:46:50 s_a_white - * PlaySID reads fixed to come from RAM only. - * - * Revision 1.41 2002/03/12 18:43:59 s_a_white - * Tidy up handling of envReset on illegal CPU instructions. - * - * Revision 1.40 2002/03/11 18:01:30 s_a_white - * Prevent lockup if config call fails with existing and old configurations. - * - * Revision 1.39 2002/03/03 22:01:58 s_a_white - * New clock speed & sid model interface. - * - * Revision 1.38 2002/02/17 16:33:02 s_a_white - * New reset interface for sidbuilders. - * - * Revision 1.37 2002/02/17 12:42:45 s_a_white - * envReset now sets playerStopped indicators. This means the player - * nolonger locks up when a HLT instruction is encountered. - * - * Revision 1.36 2002/02/06 20:12:03 s_a_white - * Added sidplay1 random extension for vic reads. - * - * Revision 1.35 2002/01/29 21:50:33 s_a_white - * Auto switching to a better emulation mode. m_tuneInfo reloaded after a - * config. Initial code added to support more than two sids. - * - * Revision 1.34 2002/01/14 23:16:27 s_a_white - * Prevent multiple initialisations if already stopped. - * - * Revision 1.33 2001/12/13 08:28:08 s_a_white - * Added namespace support to fix problems with xsidplay. - * - * Revision 1.32 2001/11/16 19:25:33 s_a_white - * Removed m_context as where getting mixed with parent class. - * - * Revision 1.31 2001/10/18 22:33:40 s_a_white - * Initialisation order fixes. - * - * Revision 1.30 2001/10/02 18:26:36 s_a_white - * Removed ReSID support and updated for new scheduler. - * - * Revision 1.29 2001/09/17 19:02:38 s_a_white - * Now uses fixed point maths for sample output and rtc. - * - * Revision 1.28 2001/09/04 18:50:57 s_a_white - * Fake CIA address now masked. - * - * Revision 1.27 2001/09/01 11:15:46 s_a_white - * Fixes sidplay1 environment modes. - * - * Revision 1.26 2001/08/10 20:04:46 s_a_white - * Initialise requires rtc reset for correct use with stop operation. - * - * Revision 1.25 2001/07/27 12:51:55 s_a_white - * Removed warning. - * - * Revision 1.24 2001/07/25 17:01:13 s_a_white - * Support for new configuration interface. - * - * Revision 1.23 2001/07/14 16:46:16 s_a_white - * Sync with sidbuilder class project. - * - * Revision 1.22 2001/07/14 12:56:15 s_a_white - * SID caching no longer needed. IC components now run using event - * generation (based on VICE). Handling of IRQs now more effecient. All - * sidplay1 hacks either removed or moved to sid6510. Fixed PAL/NTSC - * speeding fixing. Now uses new component and sidbuilder classes. - * - * Revision 1.21 2001/04/23 17:09:56 s_a_white - * Fixed video speed selection using unforced/forced and NTSC clockSpeeds. - * - * Revision 1.20 2001/03/26 21:46:43 s_a_white - * Removed unused #include. - * - * Revision 1.19 2001/03/25 19:48:13 s_a_white - * xsid.reset added. - * - * Revision 1.18 2001/03/22 22:45:20 s_a_white - * Re-ordered initialisations to match defintions. - * - * Revision 1.17 2001/03/21 22:32:34 s_a_white - * Filter redefinition support. VIC & NMI support added. Moved fake interrupts - * to sid6510 class. - * - * Revision 1.16 2001/03/09 22:26:36 s_a_white - * Support for updated C64 player. - * - * Revision 1.15 2001/03/08 22:46:42 s_a_white - * playAddr = 0xffff now better supported. - * - * Revision 1.14 2001/03/01 23:46:37 s_a_white - * Support for sample mode to be selected at runtime. - * - * Revision 1.13 2001/02/28 18:55:27 s_a_white - * Removed initBank* related stuff. IRQ terminating ROM jumps at 0xea31, - * 0xea7e and 0xea81 now handled. - * - * Revision 1.12 2001/02/21 21:43:10 s_a_white - * Now use VSID code and this handles interrupts much better! The whole - * initialise sequence has been modified to support this. - * - * Revision 1.11 2001/02/13 21:01:14 s_a_white - * Support for real interrupts. C64 Initialisation routine now run from Player::play - * instead of Player::initialise. Prevents lockups if init routine does not return. - * - * Revision 1.10 2001/02/08 17:21:14 s_a_white - * Initial SID volumes not being stored in cache. Fixes Dulcedo Cogitationis. - * - * Revision 1.9 2001/02/07 20:56:46 s_a_white - * Samples now delayed until end of simulated frame. - * - * Revision 1.8 2001/01/23 21:26:28 s_a_white - * Only way to load a tune now is by passing in a sidtune object. This is - * required for songlength database support. - * - * Revision 1.7 2001/01/07 15:13:39 s_a_white - * Hardsid update to mute sids when program exits. - * - * Revision 1.6 2000/12/21 22:48:27 s_a_white - * Re-order voices for mono to stereo conversion to match sidplay1. - * - * Revision 1.5 2000/12/14 23:53:36 s_a_white - * Small optimisation update, and comment revision. - * - * Revision 1.4 2000/12/13 17:56:24 s_a_white - * Interrupt vector address changed from 0x315 to 0x314. - * - * Revision 1.3 2000/12/13 12:00:25 mschwendt - * Corrected order of members in member initializer-list. - * - * Revision 1.2 2000/12/12 22:50:15 s_a_white - * Bug Fix #122033. - * - ***************************************************************************/ - -#include <stdlib.h> -#include <string.h> -#include <time.h> -#include "config.h" -#include "sidendian.h" -#include "player.h" - -#ifdef HAVE_EXCEPTIONS -# include <new> -#endif - -static const uint8_t kernal[] = { -#include "kernal.bin" -}; - -SIDPLAY2_NAMESPACE_START - -const double Player::CLOCK_FREQ_NTSC = 1022727.14; -const double Player::CLOCK_FREQ_PAL = 985248.4; -const double Player::VIC_FREQ_PAL = 50.0; -const double Player::VIC_FREQ_NTSC = 60.0; - -// These texts are used to override the sidtune settings. -const char *Player::TXT_PAL_VBI = "50 Hz VBI (PAL)"; -const char *Player::TXT_PAL_VBI_FIXED = "60 Hz VBI (PAL FIXED)"; -const char *Player::TXT_PAL_CIA = "CIA (PAL)"; -const char *Player::TXT_PAL_UNKNOWN = "UNKNOWN (PAL)"; -const char *Player::TXT_NTSC_VBI = "60 Hz VBI (NTSC)"; -const char *Player::TXT_NTSC_VBI_FIXED = "50 Hz VBI (NTSC FIXED)"; -const char *Player::TXT_NTSC_CIA = "CIA (NTSC)"; -const char *Player::TXT_NTSC_UNKNOWN = "UNKNOWN (NTSC)"; -const char *Player::TXT_NA = "NA"; - -// Error Strings -const char *Player::ERR_CONF_WHILST_ACTIVE = "SIDPLAYER ERROR: Trying to configure player whilst active."; -const char *Player::ERR_UNSUPPORTED_FREQ = "SIDPLAYER ERROR: Unsupported sampling frequency."; -const char *Player::ERR_UNSUPPORTED_PRECISION = "SIDPLAYER ERROR: Unsupported sample precision."; -const char *Player::ERR_MEM_ALLOC = "SIDPLAYER ERROR: Memory Allocation Failure."; -const char *Player::ERR_UNSUPPORTED_MODE = "SIDPLAYER ERROR: Unsupported Environment Mode (Coming Soon)."; - -const char *Player::credit[]; - - -// Set the ICs environment variable to point to -// this player -Player::Player (void) -// Set default settings for system -:c64env (&m_scheduler), - m_scheduler ("SIDPlay 2"), - sid6510 (&m_scheduler), - mos6510 (&m_scheduler), - cpu (&sid6510), - xsid (this, &nullsid), - cia (this), - cia2 (this), - sid6526 (this), - vic (this), - mixerEvent (this), - rtc (&m_scheduler), - m_tune (NULL), - m_ram (NULL), - m_rom (NULL), - m_errorString (TXT_NA), - m_fastForwardFactor (1.0), - m_mileage (0), - m_playerState (sid2_stopped), - m_running (false), - m_sampleCount (0) -{ - srand ((uint) ::time(NULL)); - m_rand = (uint_least32_t) rand (); - - // Set the ICs to use this environment - sid6510.setEnvironment (this); - mos6510.setEnvironment (this); - - // SID Initialise - for (int i = 0; i < SID2_MAX_SIDS; i++) - sid[i] = &nullsid; - xsid.emulation(sid[0]); - sid[0] = &xsid; - - // Setup exported info - m_info.credits = credit; - m_info.channels = 1; - m_info.driverAddr = 0; - m_info.driverLength = 0; - m_info.name = PACKAGE; - m_info.tuneInfo = NULL; - m_info.version = VERSION; - m_info.eventContext = &context(); - // Number of SIDs support by this library - m_info.maxsids = SID2_MAX_SIDS; - m_info.environment = sid2_envR; - - // Configure default settings - m_cfg.clockDefault = SID2_CLOCK_CORRECT; - m_cfg.clockForced = false; - m_cfg.clockSpeed = SID2_CLOCK_CORRECT; - m_cfg.environment = m_info.environment; - m_cfg.forceDualSids = false; - m_cfg.frequency = SID2_DEFAULT_SAMPLING_FREQ; - m_cfg.optimisation = SID2_DEFAULT_OPTIMISATION; - m_cfg.playback = sid2_mono; - m_cfg.precision = SID2_DEFAULT_PRECISION; - m_cfg.sidDefault = SID2_MODEL_CORRECT; - m_cfg.sidEmulation = NULL; - m_cfg.sidModel = SID2_MODEL_CORRECT; - m_cfg.sidSamples = true; - m_cfg.leftVolume = 255; - m_cfg.rightVolume = 255; - m_cfg.sampleFormat = SID2_LITTLE_SIGNED; - - // Configured by default for Sound Blaster (compatibles) - if (SID2_DEFAULT_PRECISION == 8) - m_cfg.sampleFormat = SID2_LITTLE_UNSIGNED; - config (m_cfg); - - // Get component credits - credit[0] = PACKAGE " V" VERSION " Engine:\0\tCopyright (C) 2000 Simon White <sidplay2@email.com>\0"; - credit[1] = xsid.credits (); - credit[2] = "*MOS6510 (CPU) Emulation:\0\tCopyright (C) 2000 Simon White <sidplay2@email.com>\0"; - credit[3] = cia.credits (); - credit[4] = vic.credits (); - credit[5] = NULL; -} - -// Makes the next sequence of notes available. For sidplay compatibility -// this function should be called from interrupt event -void Player::fakeIRQ (void) -{ // Check to see if the play address has been provided or whether - // we should pick it up from an IRQ vector - uint_least16_t playAddr = m_tuneInfo.playAddr; - - // We have to reload the new play address - if (playAddr) - evalBankSelect (m_playBank); - else - { - if (isKernal) - { // Setup the entry point from hardware IRQ - playAddr = endian_little16 (&m_ram[0x0314]); - } - else - { // Setup the entry point from software IRQ - playAddr = endian_little16 (&m_ram[0xFFFF]); - } - } - - // Setup the entry point and restart the cpu - cpu->triggerIRQ (); - sid6510.reset (playAddr, 0, 0, 0); -} - -int Player::fastForward (uint percent) -{ - if (percent > 3200) - { - m_errorString = "SIDPLAYER ERROR: Percentage value out of range"; - return -1; - } - { - float64_t fastForwardFactor; - fastForwardFactor = (float64_t) percent / 100.0; - // Conversion to fixed point 8.24 - m_samplePeriod = (event_clock_t) ((float64_t) m_samplePeriod / - m_fastForwardFactor * fastForwardFactor); - m_fastForwardFactor = fastForwardFactor; - } - return 0; -} - -int Player::initialise () -{ // Fix the mileage counter if just finished another song. - mileageCorrect (); - m_mileage += time (); - - reset (); - if (psidDrvInstall (m_tuneInfo, m_info) < 0) - return -1; - - // The Basic ROM sets these values on loading a file. - { // Program start address - uint_least16_t addr = m_tuneInfo.loadAddr; - endian_little16 (&m_ram[0x2b], addr); - // Program end address + 1 - addr += m_tuneInfo.c64dataLen; - endian_little16 (&m_ram[0x2d], addr); - } - - if (!m_tune->placeSidTuneInC64mem (m_ram)) - { // Rev 1.6 (saw) - Allow loop through errors - m_errorString = m_tuneInfo.statusString; - return -1; - } - - rtc.reset (); - envReset (false); - return 0; -} - -int Player::load (SidTune *tune) -{ - m_tune = tune; - if (!tune) - { // Unload tune - m_info.tuneInfo = NULL; - return 0; - } - m_info.tuneInfo = &m_tuneInfo; - - // Un-mute all voices - xsid.mute (false); - - for (int i = 0; i < SID2_MAX_SIDS; i++) - { - uint_least8_t v = 3; - while (v--) - sid[i]->voice (v, 0, false); - } - - { // Must re-configure on fly for stereo support! - int ret = config (m_cfg); - // Failed configuration with new tune, reject it - if (ret < 0) - { - m_tune = NULL; - return -1; - } - } - return 0; -} - -void Player::mileageCorrect (void) -{ // If just finished a song, round samples to correct mileage - if (m_sampleCount >= (m_cfg.frequency / 2)) - m_mileage++; - m_sampleCount = 0; -} - -void Player::pause (void) -{ - if (m_running) - { - m_playerState = sid2_paused; - m_running = false; - } -} - -uint_least32_t Player::play (void *buffer, uint_least32_t length) -{ - // Make sure a _tune is loaded - if (!m_tune) - return 0; - - // Setup Sample Information - m_sampleIndex = 0; - m_sampleCount = length; - m_sampleBuffer = (char *) buffer; - - // Start the player loop - m_playerState = sid2_playing; - m_running = true; - - while (m_running) - m_scheduler.clock (); - - if (m_playerState == sid2_stopped) - initialise (); - return m_sampleIndex; -} - -void Player::stop (void) -{ // Re-start song - if (m_tune && (m_playerState != sid2_stopped)) - { - if (!m_running) - initialise (); - else - { - m_playerState = sid2_stopped; - m_running = false; - } - } -} - - -//------------------------------------------------------------------------- -// Temporary hack till real bank switching code added - -// Input: A 16-bit effective address -// Output: A default bank-select value for $01. -uint8_t Player::iomap (uint_least16_t addr) -{ - if (m_info.environment != sid2_envPS) - { // Force Real C64 Compatibility - if (m_tuneInfo.compatibility == SIDTUNE_COMPATIBILITY_R64) - return 0; // Special case, converted to 0x37 later - - if (addr == 0) - return 0; // Special case, converted to 0x37 later - if (addr < 0xa000) - return 0x37; // Basic-ROM, Kernal-ROM, I/O - if (addr < 0xd000) - return 0x36; // Kernal-ROM, I/O - if (addr >= 0xe000) - return 0x35; // I/O only - } - return 0x34; // RAM only (special I/O in PlaySID mode) -} - -void Player::evalBankSelect (uint8_t data) -{ // Determine new memory configuration. - isBasic = ((data & 3) == 3); - isIO = ((data & 7) > 4); - isKernal = ((data & 2) != 0); - m_bankReg = data; -} - -uint8_t Player::readMemByte_player (uint_least16_t addr) -{ - if (m_info.environment == sid2_envR) - return readMemByte_sidplaybs (addr); - return readMemByte_plain (addr); -} - -uint8_t Player::readMemByte_plain (uint_least16_t addr) -{ // Bank Select Register Value DOES NOT get to ram - if (addr == 0x0001) - return m_bankReg; - return m_ram[addr]; -} - -uint8_t Player::readMemByte_io (uint_least16_t addr) -{ - uint_least16_t tempAddr = (addr & 0xfc1f); - - // Not SID ? - if (( tempAddr & 0xff00 ) != 0xd400 ) - { - if (m_info.environment == sid2_envR) - { - switch (endian_16hi8 (addr)) - { - case 0: - return readMemByte_plain (addr); - case 0xdc: - return cia.read (addr&0x0f); - case 0xdd: - return cia2.read (addr&0x0f); - case 0xd0: - return vic.read (addr&0x3f); - default: - return m_rom[addr]; - } - } - else - { - switch (endian_16hi8 (addr)) - { - case 0: - return readMemByte_plain (addr); - // Sidplay1 Random Extension CIA - case 0xdc: - return sid6526.read (addr&0x0f); - // Sidplay1 Random Extension VIC - case 0xd0: - switch (addr & 0x3f) - { - case 0x11: - case 0x12: - return sid6526.read ((addr-13)&0x0f); - } - // Deliberate run on - default: - return m_rom[addr]; - } - } - } - - // Read real sid for these - if ((addr & 0xff00) == m_sidAddress[1]) - return sid[1]->read ((uint8_t) addr); - return sid[0]->read ((uint8_t) tempAddr); -} - -uint8_t Player::readMemByte_sidplaytp(uint_least16_t addr) -{ - if (addr < 0xD000) - return readMemByte_plain (addr); - else - { - // Get high-nibble of address. - switch (addr >> 12) - { - case 0xd: - if (isIO) - return readMemByte_io (addr); - else - return m_ram[addr]; - break; - case 0xe: - case 0xf: - default: // <-- just to please the compiler - return m_ram[addr]; - } - } -} - -uint8_t Player::readMemByte_sidplaybs (uint_least16_t addr) -{ - if (addr < 0xA000) - return readMemByte_plain (addr); - else - { - // Get high-nibble of address. - switch (addr >> 12) - { - case 0xa: - case 0xb: - if (isBasic) - return m_rom[addr]; - else - return m_ram[addr]; - break; - case 0xc: - return m_ram[addr]; - break; - case 0xd: - if (isIO) - return readMemByte_io (addr); - else - return m_ram[addr]; - break; - case 0xe: - case 0xf: - default: // <-- just to please the compiler - if (isKernal) - return m_rom[addr]; - else - return m_ram[addr]; - } - } -} - -void Player::writeMemByte_plain (uint_least16_t addr, uint8_t data) -{ - if (addr == 0x0001) - { // Determine new memory configuration. - evalBankSelect (data); - return; - } - m_ram[addr] = data; -} - -void Player::writeMemByte_playsid (uint_least16_t addr, uint8_t data) -{ - uint_least16_t tempAddr = (addr & 0xfc1f); - - // Not SID ? - if (( tempAddr & 0xff00 ) != 0xd400 ) - { - if (m_info.environment == sid2_envR) - { - switch (endian_16hi8 (addr)) - { - case 0: - writeMemByte_plain (addr, data); - return; - case 0xdc: - cia.write (addr&0x0f, data); - return; - case 0xdd: - cia2.write (addr&0x0f, data); - return; - case 0xd0: - vic.write (addr&0x3f, data); - return; - default: - m_rom[addr] = data; - return; - } - } - else - { - switch (endian_16hi8 (addr)) - { - case 0: - writeMemByte_plain (addr, data); - return; - case 0xdc: // Sidplay1 CIA - sid6526.write (addr&0x0f, data); - return; - default: - m_rom[addr] = data; - return; - } - } - } - - // $D41D/1E/1F, $D43D/3E/3F, ... - // Map to real address to support PlaySID - // Extended SID Chip Registers. - if (( tempAddr & 0x00ff ) >= 0x001d ) - xsid.write16 (addr & 0x01ff, data); - else // Mirrored SID. - { // SID. - // Convert address to that acceptable by resid - // Support dual sid - if ((addr & 0xff00) == m_sidAddress[1]) - { - sid[1]->write (addr & 0xff, data); - // Prevent sid write accessing other sid - // if not doing mono to stereo conversion. - if (m_sidAddress[1] != m_sidAddress[0]) - return; - } - sid[0]->write (tempAddr & 0xff, data); - } -} - -void Player::writeMemByte_sidplay (uint_least16_t addr, uint8_t data) -{ - if (addr < 0xA000) - writeMemByte_plain (addr, data); - else - { - // Get high-nibble of address. - switch (addr >> 12) - { - case 0xa: - case 0xb: - case 0xc: - m_ram[addr] = data; - break; - case 0xd: - if (isIO) - writeMemByte_playsid (addr, data); - else - m_ram[addr] = data; - break; - case 0xe: - case 0xf: - default: // <-- just to please the compiler - m_ram[addr] = data; - } - } -} - -// -------------------------------------------------- -// These must be available for use: -void Player::reset (void) -{ - int i; - - m_playerState = sid2_stopped; - m_running = false; - - // Select Sidplay1 compatible CPU or real thing - cpu = &sid6510; - sid6510.environment (m_info.environment); - - m_scheduler.reset (); - for (i = 0; i < SID2_MAX_SIDS; i++) - sid[i]->reset (0x0f); - - if (m_info.environment == sid2_envR) - { - cia.reset (); - cia2.reset (); - vic.reset (); - } - else - { - sid6526.reset (); - sid6526.write (0x0e, 1); // Start timer - if (m_tuneInfo.songSpeed == SIDTUNE_SPEED_VBI) - sid6526.lock (); - } - - // Initalise Memory - memset (m_ram, 0, 0x10000); - memset (m_rom, 0, 0x10000); - if (m_info.environment != sid2_envPS) - memset (m_rom + 0xA000, RTSn, 0x2000); - - if (m_info.environment == sid2_envR) - { - memcpy (&m_rom[0xe000], kernal, sizeof (kernal)); - // Since we don't yet run the kernal power up - // routines, set somethings here. - endian_little16 (&m_ram[0x028f], 0xEB48); // keyboard poll - m_rom[0xfd69] = 0x9f; // Bypass memory check - m_rom[0xe55f] = 0x00; // Bypass screen clear - endian_little16 (&m_rom[0xa000], 0xA004); - endian_little16 (&m_rom[0xa002], 0xA004); - m_rom[0xa004] = JMPw; - endian_little16 (&m_rom[0xa005], 0xA004); - } - else // !sid2_envR - { - memset (m_rom + 0xE000, RTSn, 0x2000); - // fake VBI-interrupts that do $D019, BMI ... - m_rom[0x0d019] = 0xff; - if (m_info.environment == sid2_envPS) - { - m_ram[0xff48] = JMPi; - endian_little16 (&m_ram[0xff49], 0x0314); - } - - // Software vectors - endian_little16 (&m_ram[0x0314], 0xEA31); // IRQ - endian_little16 (&m_ram[0x0316], 0xFE66); // BRK - endian_little16 (&m_ram[0x0318], 0xFE47); // NMI - // Hardware vectors - if (m_info.environment == sid2_envPS) - endian_little16 (&m_rom[0xfffa], 0xFFFA); // NMI - else - endian_little16 (&m_rom[0xfffa], 0xFE43); // NMI - endian_little16 (&m_rom[0xfffc], 0xFCE2); // RESET - endian_little16 (&m_rom[0xfffe], 0xFF48); // IRQ - memcpy (&m_ram[0xfffa], &m_rom[0xfffa], 6); - } - - // Will get done later if can't now - if (m_tuneInfo.clockSpeed == SIDTUNE_CLOCK_PAL) - m_ram[0x02a6] = 1; - else // SIDTUNE_CLOCK_NTSC - m_ram[0x02a6] = 0; -} - -// This resets the cpu once the program is loaded to begin -// running. Also called when the emulation crashes -void Player::envReset (bool safe) -{ - if (safe) - { // Emulation crashed so run in safe mode - uint8_t prg[] = {LDAb, 0x7f, STAa, 0x0d, 0xdc, RTSn}; - sid2_info_t info; - SidTuneInfo tuneInfo; - // Install driver - tuneInfo.relocStartPage = 0x09; - tuneInfo.relocPages = 0x20; - tuneInfo.initAddr = 0x0800; - tuneInfo.songSpeed = SIDTUNE_SPEED_CIA_1A; - info.environment = m_info.environment; - psidDrvInstall (tuneInfo, info); - // Install prg - memcpy (&m_ram[0x0800], prg, sizeof (prg)); - - // Make sids silent - for (int i = 0; i < SID2_MAX_SIDS; i++) - sid[i]->reset (0); - } - - m_ram[0] = 0x2F; - evalBankSelect (0x37); - // defaults: Basic-ROM on, Kernal-ROM on, I/O on - if (m_info.environment != sid2_envR) - { - uint8_t song = m_tuneInfo.currentSong - 1; - uint8_t bank = iomap (m_tuneInfo.initAddr); - if (bank == 0) - bank = 0x37; - evalBankSelect (bank); - m_playBank = iomap (m_tuneInfo.playAddr); - if (m_info.environment != sid2_envPS) - sid6510.reset (m_tuneInfo.initAddr, song, 0, 0); - else - sid6510.reset (m_tuneInfo.initAddr, song, song, song); - } - else - cpu->reset (); - - mixerReset (); - xsid.suppress (true); -} - -uint8_t Player::envReadMemByte (uint_least16_t addr) -{ // Read from plain only to prevent execution of rom code - return (this->*(m_readMemByte)) (addr); -} - -void Player::envWriteMemByte (uint_least16_t addr, uint8_t data) -{ // Writes must be passed to env version. - (this->*(m_writeMemByte)) (addr, data); -} - -uint8_t Player::envReadMemDataByte (uint_least16_t addr) -{ // Read from plain only to prevent execution of rom code - return (this->*(m_readMemDataByte)) (addr); -} - -bool Player::envCheckBankJump (uint_least16_t addr) -{ - switch (m_info.environment) - { - case sid2_envBS: - if (addr >= 0xA000) - { - // Get high-nibble of address. - switch (addr >> 12) - { - case 0xa: - case 0xb: - if (isBasic) - return false; - break; - - case 0xc: - break; - - case 0xd: - if (isIO) - return false; - break; - - case 0xe: - case 0xf: - default: // <-- just to please the compiler - if (isKernal) - return false; - break; - } - } - break; - - case sid2_envTP: - if ((addr >= 0xd000) && isKernal) - return false; - break; - - default: - break; - } - - return true; -} - -SIDPLAY2_NAMESPACE_STOP |