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◆ main openmsx / src / SC3000PPI.hh
1.5 KiB · C++ · last changed chore(): initial commit 1 month ago source blame history raw
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#ifndef SC3000PPI_HH
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#define SC3000PPI_HH
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#include "I8255.hh"
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#include "I8255Interface.hh"
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#include "Keyboard.hh"
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#include "MSXDevice.hh"
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#include <array>
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namespace openmsx {
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class CassettePortInterface;
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class JoystickPortIf;
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/** Connects SC-3000 peripherals to the PPI (8255).
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  */
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class SC3000PPI final : public MSXDevice, public I8255Interface
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{
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public:
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	explicit SC3000PPI(const DeviceConfig& config);
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	void reset(EmuTime time) override;
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	uint8_t readIO(uint16_t port, EmuTime time) override;
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	uint8_t peekIO(uint16_t port, EmuTime time) const override;
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	void writeIO(uint16_t port, uint8_t value, EmuTime time) override;
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	template<typename Archive>
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	void serialize(Archive& ar, unsigned version);
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private:
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	// I8255Interface
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	uint8_t readA (EmuTime time) override;
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	uint8_t readB (EmuTime time) override;
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	uint4_t readC0(EmuTime time) override;
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	uint4_t readC1(EmuTime time) override;
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	uint8_t peekA (EmuTime time) const override;
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	uint8_t peekB (EmuTime time) const override;
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	uint4_t peekC0(EmuTime time) const override;
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	uint4_t peekC1(EmuTime time) const override;
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	void writeA (uint8_t value, EmuTime time) override;
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	void writeB (uint8_t value, EmuTime time) override;
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	void writeC0(uint4_t value, EmuTime time) override;
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	void writeC1(uint4_t value, EmuTime time) override;
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	CassettePortInterface& cassettePort;
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	I8255 i8255;
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	Keyboard keyboard;
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	std::array<JoystickPortIf*, 2> ports;
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	uint4_t prevBits = 15;
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	uint4_t selectedRow = 0;
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};
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} // namespace openmsx
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#endif