I8255Interface.hh

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#ifndef I8255INTERFACE_HH
#define I8255INTERFACE_HH
 
#include "EmuTime.hh"
#include "openmsx.hh"
 
namespace openmsx {
 
class I8255Interface
{
public:
        [[nodiscard]] virtual byte readA(EmuTime::param time) = 0;
        [[nodiscard]] virtual byte readB(EmuTime::param time) = 0;
        [[nodiscard]] virtual nibble readC0(EmuTime::param time) = 0;
        [[nodiscard]] virtual nibble readC1(EmuTime::param time) = 0;
        [[nodiscard]] virtual byte peekA(EmuTime::param time) const = 0;
        [[nodiscard]] virtual byte peekB(EmuTime::param time) const = 0;
        [[nodiscard]] virtual nibble peekC0(EmuTime::param time) const = 0;
        [[nodiscard]] virtual nibble peekC1(EmuTime::param time) const = 0;
        virtual void writeA(byte value, EmuTime::param time) = 0;
        virtual void writeB(byte value, EmuTime::param time) = 0;
        virtual void writeC0(nibble value, EmuTime::param time) = 0;
        virtual void writeC1(nibble value, EmuTime::param time) = 0;
 
protected:
        ~I8255Interface() = default;
};
 
} // namespace openmsx
 
#endif