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Fixed 'same value, then immediate increment, then proper counting increments' behaviour and ensured it takes one cycle to commit a value. Adjusted tests to match.

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Thomas Harte
2017-03-04 15:57:54 -05:00
parent 837cccdf83
commit e09b76bf32
2 changed files with 56 additions and 22 deletions
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Components/6532/6532.hpp
+1 -1
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@@ -51,7 +51,7 @@ template <class T> class MOS6532 {
if(address & 0x10)
{
timer_.writtenShift = timer_.activeShift = (decodedAddress - 0x04) * 3 + (decodedAddress / 0x07); // i.e. 0, 3, 6, 10
timer_.value = ((unsigned int)(value) << timer_.activeShift) | ((1 << timer_.activeShift)-1);
timer_.value = ((unsigned int)value << timer_.activeShift) + 2;
timer_.interrupt_enabled = !!(address&0x08);
interrupt_status_ &= ~InterruptFlag::Timer;
evaluate_interrupts();