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Merge pull request #317 from cam900/vrc6 

Minor optimization
This commit is contained in:
tildearrow 2022-03-28 13:23:52 -05:00 committed by GitHub
parent f1b5a35ff5 5060c0c140
commit 3561d866fb
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 4 additions and 6 deletions
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10
src/engine/platform/sound/vrcvi/vrcvi.cpp
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@ -145,10 +145,7 @@ bool vrcvi_core::alu_t::tick()
bool vrcvi_core::pulse_t::tick()
{
if (!m_divider.m_enable)
{
m_cycle = 0;
return false;
}
if (vrcvi_core::alu_t::tick())
m_cycle = bitfield(m_cycle + 1, 0, 4);
@ -159,10 +156,7 @@ bool vrcvi_core::pulse_t::tick()
bool vrcvi_core::sawtooth_t::tick()
{
if (!m_divider.m_enable)
{
m_accum = 0;
return false;
}
if (vrcvi_core::alu_t::tick())
{
@ -260,6 +254,8 @@ 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.m_divider.write(true, data);
if (!v.m_divider.m_enable) // Reset duty cycle
v.m_cycle = 0;
break;
}
}
@ -276,6 +272,8 @@ void vrcvi_core::saw_w(u8 address, u8 data)
break;
case 0x02: // Pitch MSB, Enable/Disable - 0xb002/0xb001 (Sawtooth)
m_sawtooth.m_divider.write(true, data);
if (!m_sawtooth.m_divider.m_enable) // Reset accumulator
m_sawtooth.m_accum = 0;
break;
}
}