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Merge branch 'master' into Vic-20

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Thomas Harte 2016-06-10 18:23:55 -04:00
commit 12d1cac751
1 changed files with 1 additions and 1 deletions
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Machines/Atari2600/Atari2600.cpp
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@ -721,7 +721,7 @@ unsigned int Machine::perform_bus_operation(CPU6502::BusOperation operation, uin
case 0x06:
case 0x07:
_writtenPiaTimerShift = _piaTimerShift = (decodedAddress - 0x04) * 3 + (decodedAddress / 0x07); // i.e. 0, 3, 6, 10
_piaTimerValue = (unsigned int)(*value) << _piaTimerShift;
_piaTimerValue = ((unsigned int)(*value) << _piaTimerShift) | ((1 << _piaTimerShift)-1);
_piaTimerStatus &= ~0x40;
break;
}