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Adds Timer 1 toggling of PB7.

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This commit is contained in:
Thomas Harte 2019-06-03 15:39:20 -04:00
parent 4d4ddded6d
commit abe55fe950
1 changed files with 8 additions and 0 deletions
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8
Components/6522/Implementation/6522Implementation.hpp
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@ -313,10 +313,18 @@ template <typename T> void MOS6522<T>::do_phase1() {
registers_.interrupt_flags |= InterruptFlag::Timer1;
reevaluate_interrupts();
// Determine whether to reload.
if(registers_.auxiliary_control&0x40)
registers_.timer_needs_reload = true;
else
timer_is_running_[0] = false;
// Determine whether to toggle PB7.
if(registers_.auxiliary_control&0x80) {
registers_.output[1] ^= 0x80;
bus_handler_.run_for(time_since_bus_handler_call_.flush());
bus_handler_.set_port_output(Port::B, registers_.output[1], registers_.data_direction[1]);
}
}
// If the shift register is shifting according to the input clock, do a shift.