openMSX
Public Member Functions | List of all members
openmsx::MSXMirrorDevice Class Referencefinal

#include <MSXMirrorDevice.hh>

Inheritance diagram for openmsx::MSXMirrorDevice:
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Collaboration diagram for openmsx::MSXMirrorDevice:
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Public Member Functions

 MSXMirrorDevice (const DeviceConfig &config)
 
byte readMem (word address, EmuTime::param time) override
 Read a byte from a location at a certain time from this device.
 
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.
 
const bytegetReadCacheLine (word start) const override
 Test that the memory in the interval [start, start + CacheLine::SIZE) is cacheable for reading.
 
bytegetWriteCacheLine (word start) override
 Test that the memory in the interval [start, start + CacheLine::SIZE) is cacheable for writing.
 
byte peekMem (word address, EmuTime::param time) const override
 Read a byte from a given memory location.
 
bool allowUnaligned () const override
 By default we don't allow unaligned <mem> specifications in the config file.
 
template<typename Archive >
void serialize (Archive &ar, unsigned version)
 
- Public Member Functions inherited from openmsx::MSXDevice
 MSXDevice (const MSXDevice &)=delete
 
 MSXDevice (MSXDevice &&)=delete
 
MSXDeviceoperator= (const MSXDevice &)=delete
 
MSXDeviceoperator= (MSXDevice &&)=delete
 
virtual ~MSXDevice ()=0
 
const HardwareConfiggetHardwareConfig () const
 Returns the hardwareconfig this device belongs to.
 
void testRemove (std::span< const std::unique_ptr< MSXDevice > > removed) const
 Checks whether this device can be removed (no other device has a reference to it).
 
virtual void reset (EmuTime::param time)
 This method is called on reset.
 
virtual byte readIRQVector ()
 Gets IRQ vector used in IM2.
 
virtual void powerDown (EmuTime::param time)
 This method is called when MSX is powered down.
 
virtual void powerUp (EmuTime::param time)
 This method is called when MSX is powered up.
 
virtual const std::string & getName () const
 Returns a human-readable name for this device.
 
virtual void getNameList (TclObject &result) const
 Returns list of name(s) of this device.
 
void getDeviceInfo (TclObject &result) const
 Get device info.
 
void getVisibleMemRegion (unsigned &base, unsigned &size) const
 Returns the range where this device is visible in memory.
 
virtual byte readIO (word port, EmuTime::param time)
 Read a byte from an IO port at a certain time from this device.
 
virtual void writeIO (word port, byte value, EmuTime::param time)
 Write a byte to a given IO port at a certain time to this device.
 
virtual byte peekIO (word port, EmuTime::param time) const
 Read a byte from a given IO port.
 
virtual void globalWrite (word address, byte value, EmuTime::param time)
 Global writes.
 
virtual void globalRead (word address, EmuTime::param time)
 Global reads.
 
void invalidateDeviceRWCache ()
 Calls MSXCPUInterface::invalidateXXCache() for the specific (part of) the slot that this device is located in.
 
void invalidateDeviceRCache ()
 
void invalidateDeviceWCache ()
 
void invalidateDeviceRWCache (unsigned start, unsigned size)
 
void invalidateDeviceRCache (unsigned start, unsigned size)
 
void invalidateDeviceWCache (unsigned start, unsigned size)
 
void fillDeviceRWCache (unsigned start, unsigned size, byte *rwData)
 Calls MSXCPUInterface::fillXXCache() for the specific (part of) the slot that this device is located in.
 
void fillDeviceRWCache (unsigned start, unsigned size, const byte *rData, byte *wData)
 
void fillDeviceRCache (unsigned start, unsigned size, const byte *rData)
 
void fillDeviceWCache (unsigned start, unsigned size, byte *wData)
 
MSXMotherBoardgetMotherBoard () const
 Get the mother board this device belongs to.
 
const XMLElementgetDeviceConfig () const
 Get the configuration section for this device.
 
const DeviceConfiggetDeviceConfig2 () const
 
const DevicesgetReferences () const
 Get the device references that are specified for this device.
 
EmuTime::param getCurrentTime () const
 
MSXCPUgetCPU () const
 
MSXCPUInterfacegetCPUInterface () const
 
SchedulergetScheduler () const
 
MSXCliCommgetCliComm () const
 
ReactorgetReactor () const
 
CommandControllergetCommandController () const
 
PluggingControllergetPluggingController () const
 
LedStatusgetLedStatus () const
 
template<typename Archive >
void serialize (Archive &ar, unsigned version)
 

Additional Inherited Members

- Public Types inherited from openmsx::MSXDevice
using Devices = std::vector< MSXDevice * >
 
- Static Public Attributes inherited from openmsx::MSXDevice
static std::array< byte, 0x10000 > unmappedRead
 
static std::array< byte, 0x10000 > unmappedWrite
 
- Protected Member Functions inherited from openmsx::MSXDevice
 MSXDevice (const DeviceConfig &config, std::string_view name)
 Every MSXDevice has a config entry; this constructor gets some device properties from that config entry.
 
 MSXDevice (const DeviceConfig &config)
 
virtual void init ()
 
virtual unsigned getBaseSizeAlignment () const
 The 'base' and 'size' attribute values need to be at least aligned to CacheLine::SIZE.
 
virtual void getExtraDeviceInfo (TclObject &result) const
 
byte getPrimarySlot () const
 
- Protected Attributes inherited from openmsx::MSXDevice
std::string deviceName
 

Detailed Description

Definition at line 10 of file MSXMirrorDevice.hh.

Constructor & Destructor Documentation

◆ MSXMirrorDevice()

openmsx::MSXMirrorDevice::MSXMirrorDevice ( const DeviceConfig config)
explicit

Definition at line 18 of file MSXMirrorDevice.cc.

Member Function Documentation

◆ allowUnaligned()

bool openmsx::MSXMirrorDevice::allowUnaligned ( ) const
overridevirtual

By default we don't allow unaligned <mem> specifications in the config file.

Though for a machine like 'Victor HC-95A' is it useful to model it with combinations of unaligned devices. So we do allow it for a select few devices: devices that promise to not call any of the 'fillDeviceXXXCache()' methods.

Reimplemented from openmsx::MSXDevice.

Definition at line 50 of file MSXMirrorDevice.cc.

◆ getReadCacheLine()

const byte * openmsx::MSXMirrorDevice::getReadCacheLine ( word  start) const
overridevirtual

Test that the memory in the interval [start, start + CacheLine::SIZE) is cacheable for reading.

If it is, a pointer to a buffer containing this interval must be returned. If not, a null pointer must be returned. Cacheable for reading means the data may be read directly from the buffer, thus bypassing the readMem() method, and thus also ignoring EmuTime. The default implementation always returns a null pointer. The start of the interval is CacheLine::SIZE aligned.

Reimplemented from openmsx::MSXDevice.

Definition at line 40 of file MSXMirrorDevice.cc.

◆ getWriteCacheLine()

byte * openmsx::MSXMirrorDevice::getWriteCacheLine ( word  start)
overridevirtual

Test that the memory in the interval [start, start + CacheLine::SIZE) is cacheable for writing.

If it is, a pointer to a buffer containing this interval must be returned. If not, a null pointer must be returned. Cacheable for writing means the data may be written directly to the buffer, thus bypassing the writeMem() method, and thus also ignoring EmuTime. The default implementation always returns a null pointer. The start of the interval is CacheLine::SIZE aligned.

Reimplemented from openmsx::MSXDevice.

Definition at line 45 of file MSXMirrorDevice.cc.

◆ peekMem()

byte openmsx::MSXMirrorDevice::peekMem ( word  address,
EmuTime::param  time 
) const
overridevirtual

Read a byte from a given memory location.

Reading memory via this method has no side effects (doesn't change the device status). If save reading is not possible this method returns 0xFF. This method is not used by the emulation. It can however be used by a debugger. The default implementation uses the cache mechanism (getReadCacheLine() method). If a certain region is not cacheable you cannot read it by default, Override this method if you want to improve this behaviour.

Reimplemented from openmsx::MSXDevice.

Definition at line 25 of file MSXMirrorDevice.cc.

References openmsx::MSXCPUInterface::peekSlottedMem().

◆ readMem()

byte openmsx::MSXMirrorDevice::readMem ( word  address,
EmuTime::param  time 
)
overridevirtual

Read a byte from a location at a certain time from this device.

The default implementation returns 255.

Reimplemented from openmsx::MSXDevice.

Definition at line 30 of file MSXMirrorDevice.cc.

References openmsx::MSXCPUInterface::readSlottedMem().

◆ serialize()

template<typename Archive >
void openmsx::MSXMirrorDevice::serialize ( Archive &  ar,
unsigned  version 
)

Definition at line 57 of file MSXMirrorDevice.cc.

◆ writeMem()

void openmsx::MSXMirrorDevice::writeMem ( word  address,
byte  value,
EmuTime::param  time 
)
overridevirtual

Write a given byte to a given location at a certain time to this device.

The default implementation ignores the write (does nothing).

Reimplemented from openmsx::MSXDevice.

Definition at line 35 of file MSXMirrorDevice.cc.

References openmsx::MSXCPUInterface::writeSlottedMem().


The documentation for this class was generated from the following files: