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Merge pull request #4729 from schnitzeltony/atari-pokey-performance-III

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pokey_device::step_pot: remove operations with no effect
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ajrhacker 2019-03-07 09:11:48 -05:00 committed by GitHub
commit ed341b1c1b
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1 changed files with 4 additions and 5 deletions
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7
src/devices/sound/pokey.cpp
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@ -538,11 +538,8 @@ void pokey_device::step_keyboard()
void pokey_device::step_pot() void pokey_device::step_pot()
{ {
if ((m_SKCTL & SK_RESET) == 0)
return;
uint8_t upd = 0;
m_pot_counter++; m_pot_counter++;
uint8_t upd = 0;
for (int pot = 0; pot < 8; pot++) for (int pot = 0; pot < 8; pot++)
{ {
if ((m_POTx[pot]<m_pot_counter) || (m_pot_counter == 228)) if ((m_POTx[pot]<m_pot_counter) || (m_pot_counter == 228))
@ -551,6 +548,8 @@ void pokey_device::step_pot()
/* latching is emulated in read */ /* latching is emulated in read */
} }
} }
// some pots latched?
if (upd != 0)
synchronize(SYNC_POT, upd); synchronize(SYNC_POT, upd);
} }