CMS::CMS Class Reference

Inheritance diagram for CMS::CMS:

Public Member Functions
virtual bool	init ()=0
virtual void	reset ()=0
virtual void	write (int a, int v)=0
virtual void	writeReg (int r, int v)=0
void	start (TimerCallback *callback, int timerFrequency=DEFAULT_CALLBACK_FREQUENCY)
void	stop ()
virtual void	setCallbackFrequency (int timerFrequency)=0

Static Public Attributes
static const int	DEFAULT_CALLBACK_FREQUENCY = 250

Protected Member Functions
virtual void	startCallbacks (int timerFrequency)=0
virtual void	stopCallbacks ()=0

Protected Attributes
Common::ScopedPtr< TimerCallback >	_callback

Member Function Documentation

init()

virtual bool CMS::CMS::init ( )

pure virtual

Initializes the CMS emulator.

Returns

true on success, false on failure

Implemented in DOSBoxCMS.

reset()

virtual void CMS::CMS::reset ( )

pure virtual

Reinitializes the CMS emulator

Implemented in DOSBoxCMS.

write()

virtual void CMS::CMS::write ( int  a, int  v  )

pure virtual

Writes a byte to the given I/O port. CMS responds to 2 sets of 2 ports: 0x220/0x222 - value for the 1st/2nd chip (channels 0-5/6-B) 0x221/0x223 - register for the 1st/2nd chip

Parameters

a	port address
v	value, which will be written

Implemented in DOSBoxCMS.

writeReg()

virtual void CMS::CMS::writeReg ( int  r, int  v  )

pure virtual

Function to directly write to a specific CMS register. We allow writing to secondary CMS chip registers by using register values >= 0x100.

Parameters

r	hardware register number to write to
v	value, which will be written

Implemented in DOSBoxCMS.

start()

void CMS::CMS::start	(	TimerCallback *	callback,
		int	timerFrequency = DEFAULT_CALLBACK_FREQUENCY
	)

Start the CMS with callbacks.

stop()

void CMS::CMS::stop

(

)

Stop the CMS

setCallbackFrequency()

virtual void CMS::CMS::setCallbackFrequency ( int  timerFrequency )

pure virtual

Change the callback frequency. This must only be called from a timer proc.

Implemented in CMS::EmulatedCMS.

startCallbacks()

virtual void CMS::CMS::startCallbacks ( int  timerFrequency )

protectedpure virtual

Start the callbacks.

Implemented in CMS::EmulatedCMS.

stopCallbacks()

virtual void CMS::CMS::stopCallbacks ( )

protectedpure virtual

Stop the callbacks.

Implemented in CMS::EmulatedCMS.

Member Data Documentation

_callback

Common::ScopedPtr<TimerCallback> CMS::CMS::_callback

protected

The functor for callbacks.

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

• audio/cms.h