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79 lines
1.9 KiB
C++
79 lines
1.9 KiB
C++
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//
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// DiskController.hpp
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// Clock Signal
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//
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// Created by Thomas Harte on 14/01/2020.
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// Copyright © 2020 Thomas Harte. All rights reserved.
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//
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#ifndef DiskController_h
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#define DiskController_h
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namespace Oric {
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class DiskController: public WD::WD1770 {
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public:
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DiskController(WD::WD1770::Personality personality, int clock_rate) :
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WD::WD1770(personality), clock_rate_(clock_rate) {}
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void set_disk(std::shared_ptr<Storage::Disk::Disk> disk, int d) {
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const size_t drive = size_t(d);
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if(!drives_[drive]) {
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drives_[drive] = std::make_unique<Storage::Disk::Drive>(clock_rate_, 300, 2);
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if(drive == selected_drive_) set_drive(drives_[drive]);
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}
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drives_[drive]->set_disk(disk);
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}
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enum PagingFlags {
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/// Indicates that overlay RAM is enabled, implying no ROM is visible.
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OverlayRAMEnable = (1 << 0),
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/// Indicates that the BASIC ROM is disabled, implying that the disk
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/// controller's ROM fills its space.
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BASICDisable = (1 << 1)
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};
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struct Delegate: public WD1770::Delegate {
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virtual void disk_controller_did_change_paging_flags(DiskController *controller) = 0;
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};
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inline void set_delegate(Delegate *delegate) {
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delegate_ = delegate;
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WD1770::set_delegate(delegate);
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if(delegate) delegate->disk_controller_did_change_paging_flags(this);
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}
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inline int get_paging_flags() {
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return paging_flags_;
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}
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protected:
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inline void set_paging_flags(int new_flags) {
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if(paging_flags_ == new_flags) return;
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paging_flags_ = new_flags;
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if(delegate_) {
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delegate_->disk_controller_did_change_paging_flags(this);
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}
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}
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std::array<std::shared_ptr<Storage::Disk::Drive>, 4> drives_;
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size_t selected_drive_;
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void select_drive(size_t drive) {
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if(drive != selected_drive_) {
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selected_drive_ = drive;
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set_drive(drives_[selected_drive_]);
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}
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}
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private:
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int paging_flags_ = 0;
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Delegate *delegate_ = nullptr;
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int clock_rate_;
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};
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};
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#endif /* DiskController_h */
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