void scan_platform()
{
uint32_t cpuid_reg[4];
build_pci_dt();
calculate_freq();
// Copy the values from calculate_freq()
Platform.CPU.TSCFrequency = tscFrequency;
Platform.CPU.FSBFrequency = fsbFrequency;
Platform.CPU.CPUFrequency = cpuFrequency;
do_cpuid(0, cpuid_reg);
Platform.CPU.Vendor = cpuid_reg[1];
do_cpuid(1, cpuid_reg);
Platform.CPU.Model = bitfield(cpuid_reg[0], 7, 4);
Platform.CPU.Family = bitfield(cpuid_reg[0], 11, 8);
Platform.CPU.ExtModel = bitfield(cpuid_reg[0], 19, 16);
Platform.CPU.ExtFamily = bitfield(cpuid_reg[0], 27, 20);
// Get vendor specific cpu data
if((Platform.CPU.Vendor == 0x756E6547 /* Intel */) && ((Platform.CPU.Family == 0x06) || (Platform.CPU.Family == 0x0f)))
scan_cpu_intel();
else if((Platform.CPU.Vendor == 0x68747541 /* AMD */) && (Platform.CPU.Family == 0x0f))
scan_cpu_amd();
}
void sn76_voicer::tick()
{
if(present_note == 0xFF)
{
return;
}
if(tick_counter == 0)
{
if(instrument->amp_table.tick(amprunner))
{
core->set_amp(chipnum,channel,0x0f - instrument->amp_table.present_val(amprunner));
}
bool freqd = instrument->freq_table.tick(freqrunner);
bool noted = instrument->note_table.tick(noterunner);
if(freqd || noted)
{
calculate_freq(present_note);
}
}
tick_counter++;
if(tick_counter == tick_divider)
{
tick_counter = 0;
}
}
void sn76_voicer::start_voice(unsigned char note,unsigned char vel)
{
//reset the tables
instrument->amp_table.reset(amprunner);
instrument->note_table.reset(noterunner);
instrument->freq_table.reset(freqrunner);
tick_counter = 0;
calculate_freq(note);
core->set_amp(chipnum,channel,0x0F - instrument->amp_table.present_val(amprunner));
}
void sn76_voicer::change_voice(unsigned char note,unsigned char vel)
{
int offset_note = note + instrument->note_table.present_val(noterunner);
calculate_freq(note);
}