mirror of
https://github.com/MoleskiCoder/EightBit.git
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93 lines
2.9 KiB
C++
93 lines
2.9 KiB
C++
#pragma once
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#include <cstdint>
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namespace EightBit {
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class Chip {
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public:
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enum Bits {
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Bit0 = 1,
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Bit1 = Bit0 << 1,
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Bit2 = Bit1 << 1,
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Bit3 = Bit2 << 1,
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Bit4 = Bit3 << 1,
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Bit5 = Bit4 << 1,
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Bit6 = Bit5 << 1,
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Bit7 = Bit6 << 1,
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Bit8 = Bit7 << 1,
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Bit9 = Bit8 << 1,
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Bit10 = Bit9 << 1,
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Bit11 = Bit10 << 1,
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Bit12 = Bit11 << 1,
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Bit13 = Bit12 << 1,
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Bit14 = Bit13 << 1,
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Bit15 = Bit14 << 1,
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Bit16 = Bit15 << 1
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};
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enum Masks {
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Mask1 = Bit1 - 1,
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Mask2 = Bit2 - 1,
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Mask3 = Bit3 - 1,
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Mask4 = Bit4 - 1,
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Mask5 = Bit5 - 1,
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Mask6 = Bit6 - 1,
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Mask7 = Bit7 - 1,
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Mask8 = Bit8 - 1,
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Mask9 = Bit9 - 1,
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Mask10 = Bit10 - 1,
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Mask11 = Bit11 - 1,
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Mask12 = Bit12 - 1,
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Mask13 = Bit13 - 1,
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Mask14 = Bit14 - 1,
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Mask15 = Bit15 - 1,
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Mask16 = Bit16 - 1
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};
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enum class PinLevel {
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Low, High
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};
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static void clearFlag(uint8_t& f, const int flag) noexcept { f &= ~flag; }
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static void setFlag(uint8_t& f, const int flag) noexcept { f |= flag; }
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static void setFlag(uint8_t& f, const int flag, const int condition) noexcept { setFlag(f, flag, !!condition); }
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static void setFlag(uint8_t& f, const int flag, const uint32_t condition) noexcept { setFlag(f, flag, !!condition); }
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static void setFlag(uint8_t& f, const int flag, const bool condition) noexcept { condition ? setFlag(f, flag) : clearFlag(f, flag); }
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static void clearFlag(uint8_t& f, const int flag, const int condition) noexcept { clearFlag(f, flag, !!condition); }
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static void clearFlag(uint8_t& f, const int flag, const uint32_t condition) noexcept { clearFlag(f, flag, !!condition); }
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static void clearFlag(uint8_t& f, const int flag, const bool condition) noexcept { setFlag(f, flag, !condition); }
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static constexpr auto raised(const PinLevel line) { return line == PinLevel::High; }
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static void raise(PinLevel& line) noexcept { line = PinLevel::High; }
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static constexpr auto lowered(const PinLevel line) { return line == PinLevel::Low; }
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static void lower(PinLevel& line) noexcept { line = PinLevel::Low; }
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static void match(PinLevel& line, int value);
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static constexpr auto highNibble(const int value) { return value >> 4; }
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static constexpr auto lowNibble(const int value) { return value & Mask4; }
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static constexpr auto higherNibble(const int value) { return value & 0xf0; }
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static constexpr auto lowerNibble(const int value) { return lowNibble(value); }
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static constexpr auto promoteNibble(const int value) { return value << 4; }
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static constexpr auto demoteNibble(const int value) { return highNibble(value); }
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virtual ~Chip() {};
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[[nodiscard]] auto& POWER() noexcept { return m_powerLine; }
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[[nodiscard]] auto powered() noexcept { return raised(POWER()); }
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virtual void powerOn();
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void powerOff() noexcept { lower(POWER()); }
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protected:
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Chip() = default;
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private:
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PinLevel m_powerLine = PinLevel::Low;
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};
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}
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