wavemotion-dave/NINTV-DS
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Version 4.6 with major overhaul to CPU and memory so that the DS-Lite/Phat can now run more modern homebrews. See readme.md for details.

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This commit is contained in:
Dave Bernazzani 2024-01-15 09:03:55 -05:00
parent 0b94d6994b
commit a69a317b33
9 changed files with 34 additions and 21 deletions
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2
Makefile
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@ -14,7 +14,7 @@ include $(DEVKITARM)/ds_rules
export TARGET := NINTV-DS
export TOPDIR := $(CURDIR)
export VERSION := 4.5d
export VERSION := 4.6
ICON := -b $(CURDIR)/logo.bmp "NINTV-DS $(VERSION);wavemotion-dave;https://github.com/wavemotion-dave/NINTV-DS"

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NINTV-DS.nds
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9
README.md
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@ -23,7 +23,7 @@ Features :
* Save Sate support (3 save slots per game).
* High Scores for up to 10 scores per game with various sorting options.
* Cheat / Hack support using NINTV-DS.cht (see 'extras' folder and place in /data directory)
* Tons of button / controller mapping options. Dual-Controller support (run and shoot at the same time).
* Numerous button / controller mapping options. Dual-Controller support (run and shoot at the same time).
* JLP support for accelerated functions (multiply/divide), extra RAM and flash memory. If not auto-detected, when loading a game use the X button to load with options.
* ECS support for ECS games including sound-enhanced games like Space Patrol. If not auto-detected, when loading a game use the X button to load with options.
@ -88,6 +88,13 @@ Credits :
--------------------------------------------------------------------------------
History :
--------------------------------------------------------------------------------
V4.6 : 15-Jan-2024 by wavemotion-dave
* Massive overhaul to the core emulation to reduce memory footprint. The older DS-Lite/Phat (with 4MB of memory) can now load all of the newest homebrew games!
* Optmizations in Video, Audio and CPU cores providese 10% speed up across the board.
* Improved sound quality for the DSi including a new "BEST" option (not enabled by default) that will render the sound as good as I can make it on the handheld.
* A few small fixes for the CPU core to improve the cycle accuracy.
* With the improved speed, the DSi largely disables frameskip for the best visual experience.
V4.5 : 01-Jan-2024 by wavemotion-dave
* Added new Screenshot handling (press and hold the L+R shoulder buttons for ~1 second to take a .bmp snapshot written to the SD card)
* Added new meta key mapping to un-throttle (Speedup) the emulator. Useful for games where your character is resting and you want the emulator to run the frames as fast as it can.

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26
arm9/source/config.cpp
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@ -125,7 +125,7 @@ static void SetDefaultGlobalConfig(void)
myGlobalConfig.erase_saves = 0;
myGlobalConfig.key_START_map_default = OVL_KEY_ENTER;
myGlobalConfig.key_SELECT_map_default = OVL_META_MENU;
myGlobalConfig.def_sound_quality = (isDSiMode() ? 1:3);
myGlobalConfig.def_sound_quality = (isDSiMode() ? 1:2);
myGlobalConfig.def_palette = 0;
myGlobalConfig.brightness = 0;
myGlobalConfig.menu_color = 1;
@ -160,7 +160,7 @@ static void SetDefaultGameConfig(UINT32 crc)
myConfig.key_YB_map = OVL_BTN_FIRE;
myConfig.key_BA_map = OVL_BTN_FIRE;
myConfig.controller_type = CONTROLLER_P1;
myConfig.sound_clock_div = myGlobalConfig.def_sound_quality;
myConfig.sound_quality = myGlobalConfig.def_sound_quality;
myConfig.dpad_config = DPAD_NORMAL;
myConfig.target_fps = 0;
myConfig.load_options = 0x00;
@ -346,10 +346,20 @@ void FindAndLoadConfig(UINT32 crc)
// With all the recent speed improvements, we are upgrading the DSi to no frame skip by default!
if (isDSiMode())
{
allConfigs.global_config.frame_skip = 0;
allConfigs.global_config.frame_skip = 0; // No Frame Skip
allConfigs.global_config.def_sound_quality = 1; // "Great" Sound Quality by default
for (int slot=0; slot<MAX_CONFIGS; slot++)
{
allConfigs.game_config[slot].frame_skip = 0;
allConfigs.game_config[slot].frame_skip = 0; // No Frame Skip
allConfigs.game_config[slot].sound_quality = 1; // "Great" Sound Quality
}
}
else
{
allConfigs.global_config.def_sound_quality = 2; // "Good" Sound Quality for DS-Lite/Phat by default
for (int slot=0; slot<MAX_CONFIGS; slot++)
{
allConfigs.game_config[slot].sound_quality = 2; // "Good" Sound Quality
}
}
}
@ -435,7 +445,7 @@ const struct options_t Option_Table[3][20] =
{"CONTROLLER", {"LEFT/PLAYER1", "RIGHT/PLAYER2", "DUAL-ACTION A", "DUAL-ACTION B"}, &myConfig.controller_type, 4},
{"D-PAD", {"NORMAL", "SWAP LEFT/RGT", "SWAP UP/DOWN", "DIAGONALS", "STRICT 4-WAY"}, &myConfig.dpad_config, 5},
{"FRAMESKIP", {"OFF", "ON (ODD)", "ON (EVEN)", "AGRESSIVE"}, &myConfig.frame_skip, 4},
{"SOUND DIV", {"12 (BEST)", "14 (EXELLENT)", "16 (GOOD)", "20 (AVERAGE)", "24 (FAIR)", "DISABLED"}, &myConfig.sound_clock_div, 6},
{"SOUND QUAL", {"BEST", "GREAT", "GOOD"}, &myConfig.sound_quality, 3},
{"TGT SPEED", {"60 FPS (100%)", "66 FPS (110%)", "72 FPS (120%)", "78 FPS (130%)", "84 FPS (140%)", "90 FPS (150%)", "54 FPS (90%)", "MAX SPEED"}, &myConfig.target_fps, 8},
{"PALETTE", {"ORIGINAL", "MUTED", "BRIGHT", "PAL", "CUSTOM"}, &myConfig.palette, 5},
{NULL, {"", ""}, NULL, 1},
@ -459,7 +469,7 @@ const struct options_t Option_Table[3][20] =
{"MAN DIR", {"SAME AS ROMS", "/ROMS/MAN", "/ROMS/INTV/MAN", "/DATA/MAN"}, &myGlobalConfig.man_dir, 4},
{"START DEF", {KEY_MAP_OPTIONS}, &myGlobalConfig.key_START_map_default, 27},
{"SELECT DEF", {KEY_MAP_OPTIONS}, &myGlobalConfig.key_SELECT_map_default, 27},
{"DEF SOUND", {"12 (BEST)", "14 (EXELLENT)", "16 (GOOD)", "20 (FAIR)", "24 (POOR)", "DISABLED"}, &myGlobalConfig.def_sound_quality, 6},
{"DEF SOUND", {"BEST", "GREAT", "GOOD"}, &myGlobalConfig.def_sound_quality, 3},
{"DEF PALETTE", {"ORIGINAL", "MUTED", "BRIGHT", "PAL", "CUSTOM"}, &myGlobalConfig.def_palette, 5},
{"DEF FRAMSKP", {"OFF", "ON (ODD)", "ON (EVEN)", "AGRESSIVE"}, &myGlobalConfig.frame_skip, 4},
{"BRIGTNESS", {"MAX", "DIM", "DIMMER", "DIMEST"}, &myGlobalConfig.brightness, 4},
@ -479,8 +489,8 @@ void ApplyOptions(void)
{
// Change the sound div if needed... affects sound quality and speed
extern INT32 clockDivisor, clocksPerSample;
static UINT32 sound_divs[] = {12,14,16,20,24,SOUND_DIV_DISABLE};
clockDivisor = sound_divs[myConfig.sound_clock_div];
static UINT32 sound_divs[] = {8,12,16};
clockDivisor = sound_divs[myConfig.sound_quality];
clocksPerSample = clockDivisor<<4;
// Check if the sound changed...

4
arm9/source/config.h
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@ -18,7 +18,7 @@
// ---------------------------
// Config handling...
// ---------------------------
#define CONFIG_VER 0x0007
#define CONFIG_VER 0x0008
#define MAX_CONFIGS 625
@ -42,7 +42,7 @@ struct Config_t
UINT8 key_YB_map;
UINT8 key_BA_map;
UINT8 controller_type;
UINT8 sound_clock_div;
UINT8 sound_quality;
UINT8 dpad_config;
UINT8 target_fps;
UINT8 load_options;

8
arm9/source/emucore/AudioMixer.cpp
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@ -111,16 +111,16 @@ INT32 AudioMixer::getClockSpeed()
}
// ----------------------------------------------------------------------------------------------------------------
// This is CPU heavy... we've optimized this as much as possible. We only support two audio producers - the normal
// PSG sound chip for the Intellivision and the SP0256 chip for the speech on Intellivoice. For non-intellivoice
// games (or when the intellivoice is idle), we can just deal with a single sound producer which helps...
// This is CPU heavy... we've optimized this as much as possible. We support up to three audio producers - the
// normal PSG sound chip for the Intellivision and the SP0256 chip for the speech on Intellivoice and an optional
// PSG sound chip for the ECS. For non-intellivoice games (or when the intellivoice is idle), we can just deal
// with a single sound producer which helps...
// ----------------------------------------------------------------------------------------------------------------
ITCM_CODE INT32 AudioMixer::tick(INT32 minimum)
{
extern INT32 clockDivisor;
INT32 totalSample = 0;
extern UINT8 sp_idle;
if (clockDivisor == SOUND_DIV_DISABLE) return minimum;
UINT16 soundChannelsToProcess = audioProducerCount;
if (bUseIVoice && sp_idle) soundChannelsToProcess--; // If ECS is idle we can skip processing it...

6
arm9/source/videoaud.cpp
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@ -110,11 +110,7 @@ void dsInstallSoundEmuFIFO(void)
TIMER2_DATA = TIMER_FREQ(tFreq);
TIMER2_CR = TIMER_DIV_1 | TIMER_IRQ_REQ | TIMER_ENABLE;
irqSet(IRQ_TIMER2, b_dsi_mode ? VsoundHandlerDSi:VsoundHandler);
if (myConfig.sound_clock_div != SOUND_DIV_DISABLE)
irqEnable(IRQ_TIMER2);
else
irqDisable(IRQ_TIMER2);
irqEnable(IRQ_TIMER2);
}

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