1 #ifndef MUSICALMEMORYMAPPER_HH
2 #define MUSICALMEMORYMAPPER_HH
21 void reset(EmuTime::param time)
override;
22 [[nodiscard]]
byte readIO(
word port, EmuTime::param time)
override;
23 [[nodiscard]]
byte peekIO(
word port, EmuTime::param time)
const override;
24 void writeIO(
word port,
byte value, EmuTime::param time)
override;
25 [[nodiscard]]
byte peekMem(
word address, EmuTime::param time)
const override;
26 [[nodiscard]]
byte readMem(
word address, EmuTime::param time)
override;
27 void writeMem(
word address,
byte value, EmuTime::param time)
override;
31 template<
typename Archive>
32 void serialize(Archive& ar,
unsigned version);
39 [[nodiscard]]
int readReg(
word address)
const;
44 [[nodiscard]]
bool registerAccessAt(
word address)
const;
49 [[nodiscard]]
bool writeProtected(
word address)
const {
50 unsigned page = address >> 14;
51 return (controlReg & (1 << page)) != 0;
54 void updateControlReg(
byte value);
57 std::unique_ptr<SN76489> sn76489;
Memory mapper which also controls an SN76489AN sound chip.
byte * getWriteCacheLine(word start) const override
Test that the memory in the interval [start, start + CacheLine::SIZE) is cacheable for writing.
byte peekIO(word port, EmuTime::param time) const override
Read a byte from a given IO port.
byte readIO(word port, EmuTime::param time) override
Read a byte from an IO port at a certain time from this device.
void reset(EmuTime::param time) override
This method is called on reset.
const byte * getReadCacheLine(word start) const override
Test that the memory in the interval [start, start + CacheLine::SIZE) is cacheable for reading.
void writeMem(word address, byte value, EmuTime::param time) override
Write a given byte to a given location at a certain time to this device.
void serialize(Archive &ar, unsigned version)
void writeIO(word port, byte value, EmuTime::param time) override
Write a byte to a given IO port at a certain time to this device.
byte readMem(word address, EmuTime::param time) override
Read a byte from a location at a certain time from this device.
MusicalMemoryMapper(const DeviceConfig &config)
byte peekMem(word address, EmuTime::param time) const override
Read a byte from a given memory location.
~MusicalMemoryMapper() override
This file implemented 3 utility functions:
uint16_t word
16 bit unsigned integer