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Add VRC6 support

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2 Pulse channels:
- 8 level pulse duty cycle, DAC mode(just ignores duty cycle)/pulse wave mode, 4 bit volume.
- Furnace support PCM playback in pulse channels with duty cycle ignore mode.

Sawtooth:
- nothing but 6 bit volume (8 bit accumulator in technically) and 12 bit frequency (periodic).

VRC6 instrument:
- 6 bit Volume macro for finer sawtooth volume handling, also 3 bit Duty cycle macro for pulse channels.

Duty, PCM mode command and Duty macro affects for pulse channel only.
This commit is contained in:
cam900 2022-03-28 01:06:56 +09:00
parent 09b5dd556e
commit ef104ce0b0
17 changed files with 1228 additions and 3 deletions
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28
src/gui/debug.cpp
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@ -37,6 +37,7 @@
#include "../engine/platform/saa.h"
#include "../engine/platform/amiga.h"
#include "../engine/platform/x1_010.h"
#include "../engine/platform/vrc6.h"
#include "../engine/platform/dummy.h"
#define GENESIS_DEBUG \
@ -274,6 +275,33 @@ void putDispatchChan(void* data, int chanNum, int type) {
ImGui::TextColored(ch->env.flag.envVinvL?colorOn:colorOff,">> EnvVinvL");
break;
}
case DIV_SYSTEM_VRC6: {
DivPlatformVRC6::Channel* ch=(DivPlatformVRC6::Channel*)data;
ImGui::Text("> VRC6");
ImGui::Text("* freq: %d",ch->freq);
ImGui::Text(" - base: %d",ch->baseFreq);
ImGui::Text(" - pitch: %d",ch->pitch);
ImGui::Text("- note: %d",ch->note);
ImGui::Text("* DAC:");
ImGui::Text(" - period: %d",ch->dacPeriod);
ImGui::Text(" - rate: %d",ch->dacRate);
ImGui::Text(" - out: %d",ch->dacOut);
ImGui::Text(" - pos: %d",ch->dacPos);
ImGui::Text(" - sample: %d",ch->dacSample);
ImGui::Text("- ins: %d",ch->ins);
ImGui::Text("- duty: %d",ch->duty);
ImGui::Text("- vol: %.2x",ch->vol);
ImGui::Text("- outVol: %.2x",ch->outVol);
ImGui::TextColored(ch->active?colorOn:colorOff,">> Active");
ImGui::TextColored(ch->insChanged?colorOn:colorOff,">> InsChanged");
ImGui::TextColored(ch->freqChanged?colorOn:colorOff,">> FreqChanged");
ImGui::TextColored(ch->keyOn?colorOn:colorOff,">> KeyOn");
ImGui::TextColored(ch->keyOff?colorOn:colorOff,">> KeyOff");
ImGui::TextColored(ch->inPorta?colorOn:colorOff,">> InPorta");
ImGui::TextColored(ch->pcm?colorOn:colorOff,">> DAC");
ImGui::TextColored(ch->furnaceDac?colorOn:colorOff,">> FurnaceDAC");
break;
}
default:
ImGui::Text("Unknown system! Help!");
break;