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Corrects 6526 interrupt control write.

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This seems to imply that the 6526 should be interrupting too.
This commit is contained in:
Thomas Harte 2021-07-28 19:26:02 -04:00
parent 69ae9d72c8
commit 37a55c3a77
1 changed files with 2 additions and 1 deletions

3
Components/6526/Implementation/6526Implementation.hpp

@ -126,7 +126,7 @@ void MOS6526<BusHandlerT, personality>::write(int address, uint8_t value) {
// Interrupt control. // Interrupt control.
case 13: { case 13: {
if(interrupt_control_ & 0x80) { if(value & 0x80) {
interrupt_control_ |= value & 0x7f; interrupt_control_ |= value & 0x7f;
} else { } else {
interrupt_control_ &= ~(value & 0x7f); interrupt_control_ &= ~(value & 0x7f);
@ -233,6 +233,7 @@ template <typename BusHandlerT, Personality personality>
void MOS6526<BusHandlerT, personality>::run_for(const HalfCycles half_cycles) { void MOS6526<BusHandlerT, personality>::run_for(const HalfCycles half_cycles) {
half_divider_ += half_cycles; half_divider_ += half_cycles;
const int sub = half_divider_.divide_cycles().template as<int>(); const int sub = half_divider_.divide_cycles().template as<int>();
if(!sub) return;
// Is counter A running and linked to the clock input? // Is counter A running and linked to the clock input?
int counter_a_underflows = 0; int counter_a_underflows = 0;