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Solidifies belief that the shift register bit is cleared on read/write.

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This commit is contained in:
Thomas Harte 2019-07-08 16:45:15 -04:00
parent 793c2df7ee
commit 245e27c893
1 changed files with 3 additions and 0 deletions
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3
Components/6522/Implementation/6522Implementation.hpp
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@ -92,6 +92,7 @@ template <typename T> void MOS6522<T>::set_register(int address, uint8_t value)
registers_.shift = value; registers_.shift = value;
shift_bits_remaining_ = 8; shift_bits_remaining_ = 8;
registers_.interrupt_flags &= ~InterruptFlag::ShiftRegister; registers_.interrupt_flags &= ~InterruptFlag::ShiftRegister;
reevaluate_interrupts();
break; break;
// Control // Control
@ -189,6 +190,8 @@ template <typename T> uint8_t MOS6522<T>::get_register(int address) {
case 0xa: case 0xa:
shift_bits_remaining_ = 8; shift_bits_remaining_ = 8;
registers_.interrupt_flags &= ~InterruptFlag::ShiftRegister;
reevaluate_interrupts();
return registers_.shift; return registers_.shift;
case 0xb: return registers_.auxiliary_control; case 0xb: return registers_.auxiliary_control;