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Makes the TMS a sequence-point-generating JustInTimeActor.

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This commit is contained in:
Thomas Harte
2021-04-05 21:02:37 -04:00
parent bd1ea5740a
commit 1266bbb224
7 changed files with 33 additions and 40 deletions
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Machines/MSX/MSX.cpp
+3 -10
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@@ -419,7 +419,9 @@ class ConcreteMachine:
// but otherwise runs without pause.
const HalfCycles addition((cycle.operation == CPU::Z80::PartialMachineCycle::ReadOpcode) ? 2 : 0);
const HalfCycles total_length = addition + cycle.length;
vdp_ += total_length;
if(vdp_ += total_length) {
z80_.set_interrupt_line(vdp_->get_interrupt_line(), vdp_.last_sequence_point_overrun());
}
time_since_ay_update_ += total_length;
memory_slots_[0].cycles_since_update += total_length;
memory_slots_[1].cycles_since_update += total_length;
@@ -520,7 +522,6 @@ class ConcreteMachine:
case 0x98: case 0x99:
*cycle.value = vdp_->read(address);
z80_.set_interrupt_line(vdp_->get_interrupt_line());
time_until_interrupt_ = vdp_->get_time_until_interrupt();
break;
case 0xa2:
@@ -545,7 +546,6 @@ class ConcreteMachine:
case 0x98: case 0x99:
vdp_->write(address, *cycle.value);
z80_.set_interrupt_line(vdp_->get_interrupt_line());
time_until_interrupt_ = vdp_->get_time_until_interrupt();
break;
case 0xa0: case 0xa1:
@@ -606,12 +606,6 @@ class ConcreteMachine:
if(!tape_player_is_sleeping_)
tape_player_.run_for(int(cycle.length.as_integral()));
if(time_until_interrupt_ > 0) {
time_until_interrupt_ -= total_length;
if(time_until_interrupt_ <= HalfCycles(0)) {
z80_.set_interrupt_line(true, time_until_interrupt_);
}
}
return addition;
}
@@ -785,7 +779,6 @@ class ConcreteMachine:
uint8_t unpopulated_[8192];
HalfCycles time_since_ay_update_;
HalfCycles time_until_interrupt_;
uint8_t key_states_[16];
int selected_key_line_ = 0;