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Add notes for ring modulation (XORing)

This commit is contained in:
cam900 2023-04-13 11:56:34 +09:00
parent fe0ba4e530
commit 52e6246570
3 changed files with 6 additions and 6 deletions
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2
src/engine/platform/pv1000.cpp
View File

@ -138,7 +138,7 @@ int DivPlatformPV1000::dispatch(DivCommand c) {
chan[c.chan].pitch=c.value; chan[c.chan].pitch=c.value;
chan[c.chan].freqChanged=true; chan[c.chan].freqChanged=true;
break; break;
case DIV_CMD_WAVE: case DIV_CMD_STD_NOISE_MODE: // ring modulation
if (c.value&1) { if (c.value&1) {
rWrite(3,3); rWrite(3,3);
} else { } else {

8
src/engine/platform/sound/d65modified.c
View File

@ -82,9 +82,9 @@ int d65010g031_square_tick(struct d65010g031_square_t *square, const int cycle)
// this is the bit I altered // this is the bit I altered
// THIS IS **NOT** THE ORIGINAL SOFTWARE! I am plainly marking it as such! // THIS IS **NOT** THE ORIGINAL SOFTWARE! I am plainly marking it as such!
const int d65Volumes[3]={ const int d65Volumes[3]={
3840, 3840, // -6dB
5120, 5120, // -3dB
8192 8192 // 0dB
}; };
int d65010g031_sound_tick(struct d65010g031_t *d65010g031, const int cycle) int d65010g031_sound_tick(struct d65010g031_t *d65010g031, const int cycle)
@ -96,7 +96,7 @@ int d65010g031_sound_tick(struct d65010g031_t *d65010g031, const int cycle)
} }
if (d65010g031->ctrl & 2) if (d65010g031->ctrl & 2)
{ {
if (d65010g031->ctrl & 1) if (d65010g031->ctrl & 1) // ring modulation
{ {
int sout[3] = { int sout[3] = {
d65010g031_square_tick(&d65010g031->square[0], cycle), d65010g031_square_tick(&d65010g031->square[0], cycle),

2
src/engine/sysDef.cpp
View File

@ -1842,7 +1842,7 @@ void DivEngine::registerSystems() {
{DIV_INS_PV1000, DIV_INS_PV1000, DIV_INS_PV1000}, {DIV_INS_PV1000, DIV_INS_PV1000, DIV_INS_PV1000},
{}, {},
{ {
{0x10, {DIV_CMD_WAVE, "10xx: Set waveform"}} {0x10, {DIV_CMD_STD_NOISE_MODE, "10xx: Set ring modulation (0: disable, 1: enable)"}}
} }
); );