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VRC6: 26 to 19

This commit is contained in:
tildearrow 2023-02-11 22:40:29 -05:00
parent d1245624ef
commit 4cf4635e85
2 changed files with 6 additions and 6 deletions
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6
extern/vgsound_emu-modified/vgsound_emu/src/vrcvi/vrcvi.cpp vendored
View File

@ -40,19 +40,19 @@ bool vrcvi_core::alu_t::tick()
{
const u16 temp = m_counter;
// post decrement
if (bitfield(m_host.m_control.shift(), 1))
if (m_host.m_control.m_shift&2)
{
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);
}
else if (bitfield(m_host.m_control.shift(), 0))
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);
}
else
{
m_counter = bitfield(bitfield(m_counter, 0, 12) - 1, 0, 12);
m_counter = (m_counter-1)&0xfff; //bitfield(bitfield(m_counter, 0, 12) - 1, 0, 12);
}
// carry handling

6
extern/vgsound_emu-modified/vgsound_emu/src/vrcvi/vrcvi.hpp vendored
View File

@ -359,9 +359,9 @@ class vrcvi_core : public vgsound_emu_core
inline u8 shift() { return m_shift; }
private:
u8 m_halt : 1; // halt sound
u8 m_shift : 2; // 4/8 bit right shift
public:
u8 m_halt; // halt sound
u8 m_shift; // 4/8 bit right shift
};
public: