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Code Issues 18 Packages Projects Releases 2 Wiki Activity

At least as good as the last commit

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meepingsnesroms
2018-10-30 18:04:03 -07:00
parent 2835b37e18
commit 8bcde4ef34
4 changed files with 6 additions and 6 deletions
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1
bugs/unimplementedHardware.txt
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@@ -25,6 +25,7 @@ ICR POL(1,2,3,6) may flip the pin value as well as the interrupt, POL5 does not
edge triggered INT* don't clear on write to ISR when masked in IMR(at least that seems to be the reason)
if a sound interrupt is triggered while the button interrupt is disabled the button interrupt will still trigger(in galax game)
Cyclone will cause SIGSEGVs, don't know why yet
audio can max out the resampler buffer, the max 1 FIFO sample can play is around 2.5 minutes(CLK32 / period(257) / clockDivider(16) / prescaler(128) / repeat(8))(257 * 16 * 128 * 8 / 32768=128.5 seconds)
Debug tools:
ADS7846 channels can't be read in single reference mode in hwTestSuite

6
src/audio/inductor.c
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@@ -6,7 +6,7 @@
#include "blip_buf.h"
#define INDUCTOR_CLOCK_POWER 0.000001//the amount 1 clock of true or false will change the inductors total value
#define INDUCTOR_CLOCK_POWER 0.0001//the amount 1 clock of true or false will change the inductors total value
double inductorCurrentCharge;
@@ -19,10 +19,10 @@ void inductorReset(){
}
void inductorAddClocks(int32_t clocks, bool charge){
inductorCurrentCharge = dClamp(0.0, inductorCurrentCharge + (charge ? +clocks : -clocks) * INDUCTOR_CLOCK_POWER, 1.0);
inductorCurrentCharge = dClamp(-1.0, inductorCurrentCharge + (charge ? +clocks : -clocks) * INDUCTOR_CLOCK_POWER, 1.0);
}
void inductorSampleAudio(int32_t now){
blip_add_delta_fast(palmAudioResampler, now, (inductorCurrentCharge - inductorChargeAtLastSample) * AUDIO_VOLUME);
blip_add_delta_fast(palmAudioResampler, now, (inductorCurrentCharge - inductorChargeAtLastSample) * INT16_MAX);
inductorChargeAtLastSample = inductorCurrentCharge;
}

4
src/emulator.c
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@@ -63,7 +63,7 @@ uint32_t emulatorInit(buffer_t palmRomDump, buffer_t palmBootDump, uint32_t spec
palmRom = malloc(ROM_SIZE + 4);
palmReg = malloc(REG_SIZE + 4);
palmAudio = malloc(AUDIO_SAMPLES_PER_FRAME * 2 * sizeof(int16_t));
palmAudioResampler = blip_new(AUDIO_SAMPLES_PER_FRAME * 2);//have more than one frame of samples in case its written to at the end of the frame
palmAudioResampler = blip_new(AUDIO_SAMPLE_RATE);//have 1 second of samples
if(specialFeatures & FEATURE_320x320)
palmExtendedFramebuffer = malloc(320 * (320 + 120) * sizeof(uint16_t));//really 320*320, the extra pixels are the silkscreened digitizer area
else
@@ -104,7 +104,7 @@ uint32_t emulatorInit(buffer_t palmRomDump, buffer_t palmBootDump, uint32_t spec
//add 320*320 silkscreen image later, 2xBRZ should be able to make 320*320 version of the 160*160 silkscreen
}
memset(palmAudio, 0x00, AUDIO_SAMPLES_PER_FRAME * 2/*channels*/ * sizeof(int16_t));
blip_set_rates(palmAudioResampler, AUDIO_END_OF_FRAME, AUDIO_SAMPLES_PER_FRAME);
blip_set_rates(palmAudioResampler, AUDIO_END_OF_FRAME * EMU_FPS, AUDIO_SAMPLE_RATE);
flx68000Reset();
sed1376Reset();
ads7846Reset();

1
src/emulator.h
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@@ -113,7 +113,6 @@ typedef struct{
//system constants
#define CRYSTAL_FREQUENCY 32768
#define AUDIO_VOLUME 1000000
#define AUDIO_SAMPLES_PER_FRAME (AUDIO_SAMPLE_RATE / EMU_FPS)
#define AUDIO_END_OF_FRAME (235929600 / EMU_FPS)//smallest amount of time a second can be split into:(2.0 * (14.0 * (255 + 1.0) + 15 + 1.0)) * 32768 == 235929600, used to convert the variable timing of SYSCLK and CLK32 to a fixed location in the current frame 0<->AUDIO_END_OF_FRAME
#define AUDIO_WAIT_FOR_SAMPLE INT32_MIN