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VRC6: 19 to 14

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tildearrow 2023-02-11 22:45:37 -05:00
parent 4cf4635e85
commit 3eba7721a4
2 changed files with 25 additions and 19 deletions
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42
extern/vgsound_emu-modified/vgsound_emu/src/vrcvi/vrcvi.cpp vendored
View file

@ -11,7 +11,7 @@
void vrcvi_core::tick()
{
m_out = 0;
if (!m_control.halt()) // Halt flag
if (!m_control.m_halt) // Halt flag
{
// tick per each clock
m_out += m_pulse[0].get_output(); // add 4 bit pulse output
@ -36,7 +36,7 @@ void vrcvi_core::reset()
bool vrcvi_core::alu_t::tick()
{
if (m_divider.enable())
if (m_divider.m_enable)
{
const u16 temp = m_counter;
// post decrement
@ -44,42 +44,48 @@ bool vrcvi_core::alu_t::tick()
{
m_counter = (m_counter & 0x0ff) | (bitfield(bitfield(m_counter, 8, 4) - 1, 0, 4) << 8);
m_counter = (m_counter & 0xf00) | (bitfield(bitfield(m_counter, 0, 8) - 1, 0, 8) << 0);
if (bitfield(temp, 8, 4) == 0)
{
m_counter = m_divider.m_divider;
return true;
}
}
else if (m_host.m_control.m_shift&1)
{
m_counter = (m_counter & 0x00f) | (bitfield(bitfield(m_counter, 4, 8) - 1, 0, 8) << 4);
m_counter = (m_counter & 0xff0) | (bitfield(bitfield(m_counter, 0, 4) - 1, 0, 4) << 0);
if (bitfield(temp, 4, 8) == 0)
{
m_counter = m_divider.m_divider;
return true;
}
}
else
{
m_counter = (m_counter-1)&0xfff; //bitfield(bitfield(m_counter, 0, 12) - 1, 0, 12);
if (!(temp&0xfff)) {
m_counter = m_divider.m_divider;
return true;
}
}
// carry handling
const bool carry = bitfield(m_host.m_control.shift(), 1)
? (bitfield(temp, 8, 4) == 0)
: (bitfield(m_host.m_control.shift(), 0) ? (bitfield(temp, 4, 8) == 0)
: (bitfield(temp, 0, 12) == 0));
if (carry)
{
m_counter = m_divider.divider();
}
return carry;
return false;
}
return false;
}
bool vrcvi_core::pulse_t::tick()
{
if (!m_divider.enable())
if (!m_divider.m_enable)
{
return false;
}
if (vrcvi_core::alu_t::tick())
{
m_cycle = bitfield(m_cycle + 1, 0, 4);
m_cycle = (m_cycle+1)&15;
}
return m_control.mode() ? true : ((m_cycle > m_control.duty()) ? true : false);
@ -87,7 +93,7 @@ bool vrcvi_core::pulse_t::tick()
bool vrcvi_core::sawtooth_t::tick()
{
if (!m_divider.enable())
if (!m_divider.m_enable)
{
return false;
}
@ -204,7 +210,7 @@ void vrcvi_core::pulse_w(u8 voice, u8 address, u8 data)
break;
case 0x02: // Pitch MSB, Enable/Disable - 0x9002/0x9001 (Pulse 1), 0xa002/0xa001 (Pulse 2)
v.divider().write(true, data);
if (!v.divider().enable())
if (!v.divider().m_enable)
{ // Reset duty cycle
v.clear_cycle();
}
@ -224,7 +230,7 @@ void vrcvi_core::saw_w(u8 address, u8 data)
break;
case 0x02: // Pitch MSB, Enable/Disable - 0xb002/0xb001 (Sawtooth)
m_sawtooth.divider().write(true, data);
if (!m_sawtooth.divider().enable())
if (!m_sawtooth.divider().m_enable)
{ // Reset accumulator
m_sawtooth.clear_accum();
}

2
extern/vgsound_emu-modified/vgsound_emu/src/vrcvi/vrcvi.hpp vendored
View file

@ -58,7 +58,7 @@ class vrcvi_core : public vgsound_emu_core
inline bool enable() { return m_enable; }
private:
public:
u16 m_divider : 12; // divider (pitch)
u16 m_enable : 1; // channel disable flag
};