Method write

extlibs/soloud/src/audiosource/tedsid/sid.cpp:280–408

}

void SIDsound::write(unsigned int adr, unsigned char value)
{	
	lastByteWritten = value;

	SIDVoice &v = voice[adr/7];
	switch (adr) {
		case 0:
		case 7:
		case 14:
			v.freq = (unsigned short)((v.freq & 0xff00) | value);
			v.add = (unsigned int)(((double)v.freq 
				* sidBaseFreq) * 16.0 / sampleRate + 0.5);
			break;

		case 1:
		case 8:
		case 15:
			v.freq = (unsigned short)((v.freq & 0xff) | (value << 8));
			v.add = (unsigned int)(((double)v.freq 
				* sidBaseFreq) * 16.0 / sampleRate + 0.5);
			break;

		case 2:
		case 9:
		case 16:
			v.pw = (unsigned short)((v.pw & 0x0f00) | value);
			break;

		case 3:
		case 10:
		case 17:
			v.pw = (unsigned short)((v.pw & 0xff) | ((value & 0xf) << 8));
			break;

		case 4:
		case 11:
		case 18:
			if ((value & 1) != (unsigned char) v.gate) {
				if (value & 1) {
					// gate on
					v.egState = EG_ATTACK;
					v.envCounterCompare = v.envAttackAdd;
				} else {
					// gate off
#if 00
					if (v.egState != EG_FROZEN)
#endif
						v.egState = EG_RELEASE;
					v.envCounterCompare = v.envReleaseSub;
				}
				v.gate = value & 1;
			}
			v.modulatedBy->sync = value & 2;
			v.ring = value & 4;
			if ((value & 8) && !v.test) {
				v.accu = 0; //(model_ >= SID8580) ? 0 : 0;
				unsigned int bit19 = (v.shiftReg >> 19) & 1;
				v.shiftReg = (v.shiftReg & 0x7ffffd) | ((bit19^1) << 1);