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61 lines
1.5 KiB
C++
61 lines
1.5 KiB
C++
//
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// Jasmin.hpp
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// Clock Signal
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//
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// Created by Thomas Harte on 05/01/2020.
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// Copyright © 2020 Thomas Harte. All rights reserved.
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//
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#ifndef Jasmin_hpp
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#define Jasmin_hpp
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#include "../../Components/1770/1770.hpp"
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#include "../../Activity/Observer.hpp"
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#include <array>
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#include <memory>
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namespace Oric {
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class Jasmin: public WD::WD1770 {
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public:
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Jasmin();
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void set_disk(std::shared_ptr<Storage::Disk::Disk> disk, int drive);
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void write(int address, uint8_t value);
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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 JASMIN ROM
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/// 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 jasmin_did_change_paging_flags(Jasmin *jasmin) = 0;
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};
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inline void set_delegate(Delegate *delegate) { delegate_ = delegate; WD1770::set_delegate(delegate); }
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inline int get_paging_flags() { return paging_flags_; }
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private:
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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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int paging_flags_ = 0;
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Delegate *delegate_ = nullptr;
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void posit_paging_flags(int new_flags) {
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if(new_flags != paging_flags_) {
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paging_flags_ = new_flags;
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if(delegate_) delegate_->jasmin_did_change_paging_flags(this);
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}
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}
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void set_motor_on(bool on) final;
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bool motor_on_ = false;
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};
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};
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#endif /* Jasmin_hpp */
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