#include <PhilipsFDC.hh>

Inheritance diagram for openmsx::PhilipsFDC:

Collaboration diagram for openmsx::PhilipsFDC:

Public Member Functions
	PhilipsFDC (const DeviceConfig &config)
virtual void	reset (EmuTime::param time)
	This method is called on reset.
virtual byte	readMem (word address, EmuTime::param time)
	Read a byte from a location at a certain time from this device.
virtual byte	peekMem (word address, EmuTime::param time) const
	Read a byte from a given memory location.
virtual void	writeMem (word address, byte value, EmuTime::param time)
	Write a given byte to a given location at a certain time to this device.
virtual const byte *	getReadCacheLine (word start) const
	Test that the memory in the interval [start, start + CacheLine::SIZE) is cacheable for reading.
virtual byte *	getWriteCacheLine (word address) const
	Test that the memory in the interval [start, start + CacheLine::SIZE) is cacheable for writing.
template<typename Archive >
void	serialize (Archive &ar, unsigned version)

Additional Inherited Members
Public Types inherited from openmsx::MSXDevice
typedef std::vector< MSXDevice * >	Devices
Static Public Attributes inherited from openmsx::MSXDevice
static byte	unmappedRead [0x10000]
static byte	unmappedWrite [0x10000]
Protected Member Functions inherited from openmsx::WD2793BasedFDC
	WD2793BasedFDC (const DeviceConfig &config)
virtual	~WD2793BasedFDC ()
Protected Attributes inherited from openmsx::WD2793BasedFDC
const std::unique_ptr < DriveMultiplexer >	multiplexer
const std::unique_ptr< WD2793 >	controller

Detailed Description

Definition at line 8 of file PhilipsFDC.hh.

Constructor & Destructor Documentation

openmsx::PhilipsFDC::PhilipsFDC ( const DeviceConfig & config )

explicit

Definition at line 9 of file PhilipsFDC.cc.

References openmsx::MSXDevice::getCurrentTime(), and reset().

Member Function Documentation

const byte * openmsx::PhilipsFDC::getReadCacheLine ( word start ) const

virtual

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::MSXFDC.

Definition at line 112 of file PhilipsFDC.cc.

References openmsx::MSXDevice::unmappedRead.

byte * openmsx::PhilipsFDC::getWriteCacheLine ( word start ) const

virtual

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 175 of file PhilipsFDC.cc.

References openmsx::MSXDevice::unmappedWrite.

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

virtual

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::MSXFDC.

Definition at line 50 of file PhilipsFDC.cc.

References openmsx::WD2793BasedFDC::controller.

Referenced by readMem().