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Attempts automatic Spectrum tape control.

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This commit is contained in:
Thomas Harte 2021-03-19 22:43:48 -04:00
parent 7d59ff6d8f
commit 7729f1f3d0
2 changed files with 33 additions and 6 deletions
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36
Machines/Sinclair/ZXSpectrum/ZXSpectrum.cpp
View File

@ -73,9 +73,6 @@ template<Model model> class ConcreteMachine:
// Insert media.
insert_media(target.media);
// TODO: intelligent motor control (?)
tape_player_.set_motor_control(true);
}
~ConcreteMachine() {
@ -217,6 +214,23 @@ template<Model model> class ConcreteMachine:
*cycle.value &= keyboard_.read(address);
*cycle.value &= tape_player_.get_input() ? 0xbf : 0xff;
// If this read is within 200 cycles of the previous,
// count it as an adjacent hit; if 20 of those have
// occurred then start the tape motor.
if(use_automatic_tape_motor_control_) {
if(cycles_since_tape_input_read_ < HalfCycles(400)) {
++recent_tape_hits_;
if(recent_tape_hits_ == 20) {
tape_player_.set_motor_control(true);
}
} else {
recent_tape_hits_ = 0;
}
cycles_since_tape_input_read_ = HalfCycles(0);
}
}
switch(address) {
@ -248,6 +262,17 @@ template<Model model> class ConcreteMachine:
// TODO: sleeping support here.
tape_player_.run_for(duration.as_integral());
// Update automatic tape motor control, if enabled; if it's been
// 3 seconds since software last possibly polled the tape, stop it.
if(use_automatic_tape_motor_control_ && cycles_since_tape_input_read_ < HalfCycles(clock_rate() * 6)) {
cycles_since_tape_input_read_ += duration;
if(cycles_since_tape_input_read_ >= HalfCycles(clock_rate() * 6)) {
tape_player_.set_motor_control(false);
recent_tape_hits_ = 0;
}
}
}
public:
@ -421,12 +446,13 @@ template<Model model> class ConcreteMachine:
// MARK: - Tape and disc.
Storage::Tape::BinaryTapePlayer tape_player_;
bool use_automatic_tape_motor_control_ = false;
bool use_automatic_tape_motor_control_ = true;
HalfCycles cycles_since_tape_input_read_;
int recent_tape_hits_ = 0;
bool allow_fast_tape_hack_ = false;
void set_use_fast_tape() {
// TODO.
}
};

3
Machines/Sinclair/ZXSpectrum/ZXSpectrum.hpp
View File

@ -35,7 +35,8 @@ class Machine {
Options(Configurable::OptionsType type) :
Configurable::DisplayOption<Options>(type == Configurable::OptionsType::UserFriendly ? Configurable::Display::RGB : Configurable::Display::CompositeColour),
Configurable::QuickloadOption<Options>(type == Configurable::OptionsType::UserFriendly)
Configurable::QuickloadOption<Options>(type == Configurable::OptionsType::UserFriendly),
automatic_tape_motor_control(type == Configurable::OptionsType::UserFriendly)
{
if(needs_declare()) {
DeclareField(automatic_tape_motor_control);