openMSX
MSXPac.hh
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1 #ifndef MSXPAC_HH
2 #define MSXPAC_HH
3 
4 #include "MSXDevice.hh"
5 #include "SRAM.hh"
6 
7 namespace openmsx {
8 
9 class MSXPac final : public MSXDevice
10 {
11 public:
12  explicit MSXPac(const DeviceConfig& config);
13 
14  void reset(EmuTime::param time) override;
15  [[nodiscard]] byte readMem(word address, EmuTime::param time) override;
16  void writeMem(word address, byte value, EmuTime::param time) override;
17  [[nodiscard]] const byte* getReadCacheLine(word address) const override;
18  [[nodiscard]] byte* getWriteCacheLine(word address) const override;
19 
20  template<typename Archive>
21  void serialize(Archive& ar, unsigned version);
22 
23 private:
24  void checkSramEnable();
25 
26 private:
27  SRAM sram;
28  byte r1ffe, r1fff;
29  bool sramEnabled;
30 };
31 
32 } // namespace openmsx
33 
34 #endif
An MSXDevice is an emulated hardware component connected to the bus of the emulated MSX.
Definition: MSXDevice.hh:32
void reset(EmuTime::param time) override
This method is called on reset.
Definition: MSXPac.cc:16
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.
Definition: MSXPac.cc:56
MSXPac(const DeviceConfig &config)
Definition: MSXPac.cc:9
void serialize(Archive &ar, unsigned version)
Definition: MSXPac.cc:98
byte * getWriteCacheLine(word address) const override
Test that the memory in the interval [start, start + CacheLine::SIZE) is cacheable for writing.
Definition: MSXPac.cc:75
byte readMem(word address, EmuTime::param time) override
Read a byte from a location at a certain time from this device.
Definition: MSXPac.cc:22
const byte * getReadCacheLine(word address) const override
Test that the memory in the interval [start, start + CacheLine::SIZE) is cacheable for reading.
Definition: MSXPac.cc:40
This file implemented 3 utility functions:
Definition: Autofire.cc:5
uint16_t word
16 bit unsigned integer
Definition: openmsx.hh:29