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Switches to a JustInTimeActor to wrap the IWM.

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Also simplifies potential future usage of the IWM template.
This commit is contained in:
Thomas Harte 2019-08-07 21:28:02 -04:00
parent 28ccb7b54e
commit f26a200d78
2 changed files with 12 additions and 25 deletions
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4
ClockReceiver/JustInTime.hpp
View File

@ -21,7 +21,7 @@
Machines that accumulate HalfCycle time but supply to a Cycle-counted device may supply a
separate @c TargetTimeScale at template declaration.
*/
template <class T, class LocalTimeScale, class TargetTimeScale = LocalTimeScale> class JustInTimeActor {
template <class T, class LocalTimeScale = HalfCycles, class TargetTimeScale = LocalTimeScale> class JustInTimeActor {
public:
/// Constructs a new JustInTimeActor using the same construction arguments as the included object.
template<typename... Args> JustInTimeActor(Args&&... args) : object_(std::forward<Args>(args)...) {}
@ -60,7 +60,7 @@ template <class T, class LocalTimeScale, class TargetTimeScale = LocalTimeScale>
Any time the amount of accumulated time crosses a threshold provided at construction time,
the object will be updated on the AsyncTaskQueue.
*/
template <class T, class LocalTimeScale, class TargetTimeScale = LocalTimeScale> class AsyncJustInTimeActor {
template <class T, class LocalTimeScale = HalfCycles, class TargetTimeScale = LocalTimeScale> class AsyncJustInTimeActor {
public:
/// Constructs a new AsyncJustInTimeActor using the same construction arguments as the included object.
template<typename... Args> AsyncJustInTimeActor(TargetTimeScale threshold, Args&&... args) :

33
Machines/Apple/Macintosh/Macintosh.cpp
View File

@ -115,8 +115,8 @@ template <Analyser::Static::Macintosh::Target::Model model> class ConcreteMachin
Memory::Fuzz(ram_, sizeof(ram_) / sizeof(*ram_));
// Attach the drives to the IWM.
iwm_.iwm.set_drive(0, &drives_[0]);
iwm_.iwm.set_drive(1, &drives_[1]);
iwm_->set_drive(0, &drives_[0]);
iwm_->set_drive(1, &drives_[1]);
// If they are 400kb drives, also attach them to the drive-speed accumulator.
if(!drives_[0].is_800k()) drive_speed_accumulator_.add_drive(&drives_[0]);
@ -218,11 +218,10 @@ template <Analyser::Static::Macintosh::Target::Model model> class ConcreteMachin
const int register_address = word_address >> 8;
// The IWM; this is a purely polled device, so can be run on demand.
iwm_.flush();
if(cycle.operation & Microcycle::Read) {
cycle.value->halves.low = iwm_.iwm.read(register_address);
cycle.value->halves.low = iwm_->read(register_address);
} else {
iwm_.iwm.write(register_address, cycle.value->halves.low);
iwm_->write(register_address, cycle.value->halves.low);
}
if(cycle.operation & Microcycle::SelectWord) cycle.value->halves.high = 0xff;
@ -441,7 +440,7 @@ template <Analyser::Static::Macintosh::Target::Model model> class ConcreteMachin
// MARK: - Activity Source
void set_activity_observer(Activity::Observer *observer) override {
iwm_.iwm.set_activity_observer(observer);
iwm_->set_activity_observer(observer);
}
private:
@ -461,7 +460,7 @@ template <Analyser::Static::Macintosh::Target::Model model> class ConcreteMachin
/// Advances all non-CPU components by @c duration half cycles.
forceinline void advance_time(HalfCycles duration) {
time_since_video_update_ += duration;
iwm_.time_since_update += duration;
iwm_ += duration;
ram_subcycle_ = (ram_subcycle_ + duration.as_int()) & 15;
// The VIA runs at one-tenth of the 68000's clock speed, in sync with the E clock.
@ -537,20 +536,9 @@ template <Analyser::Static::Macintosh::Target::Model model> class ConcreteMachin
return mouse_;
}
struct IWM {
IWM(int clock_rate) : iwm(clock_rate) {}
HalfCycles time_since_update;
Apple::IWM iwm;
void flush() {
iwm.run_for(time_since_update.flush<Cycles>());
}
};
class VIAPortHandler: public MOS::MOS6522::PortHandler {
public:
VIAPortHandler(ConcreteMachine &machine, RealTimeClock &clock, Keyboard &keyboard, Video &video, DeferredAudio &audio, IWM &iwm, Inputs::QuadratureMouse &mouse) :
VIAPortHandler(ConcreteMachine &machine, RealTimeClock &clock, Keyboard &keyboard, Video &video, DeferredAudio &audio, JustInTimeActor<IWM, HalfCycles, Cycles> &iwm, Inputs::QuadratureMouse &mouse) :
machine_(machine), clock_(clock), keyboard_(keyboard), video_(video), audio_(audio), iwm_(iwm), mouse_(mouse) {}
using Port = MOS::MOS6522::Port;
@ -572,8 +560,7 @@ template <Analyser::Static::Macintosh::Target::Model model> class ConcreteMachin
b3: 0 = use alternate sound buffer, 1 = use ordinary sound buffer
b2–b0: audio output volume
*/
iwm_.flush();
iwm_.iwm.set_select(!!(value & 0x20));
iwm_->set_select(!!(value & 0x20));
machine_.set_use_alternate_buffers(!(value & 0x40), !(value&0x08));
machine_.set_rom_is_overlay(!!(value & 0x10));
@ -658,14 +645,14 @@ template <Analyser::Static::Macintosh::Target::Model model> class ConcreteMachin
Keyboard &keyboard_;
Video &video_;
DeferredAudio &audio_;
IWM &iwm_;
JustInTimeActor<IWM, HalfCycles, Cycles> &iwm_;
Inputs::QuadratureMouse &mouse_;
};
CPU::MC68000::Processor<ConcreteMachine, true> mc68000_;
DriveSpeedAccumulator drive_speed_accumulator_;
IWM iwm_;
JustInTimeActor<IWM, HalfCycles, Cycles> iwm_;
DeferredAudio audio_;
Video video_;