libsidplayfp::Lightpen Class Reference

#include <lightpen.h>

Public Member Functions
void	setScreenSize (unsigned int height, unsigned int width)
void	reset ()
uint8_t	getX () const
uint8_t	getY () const
bool	retrigger ()
bool	trigger (unsigned int lineCycle, unsigned int rasterY)
void	untrigger ()

Detailed Description

Lightpen emulation. Does not reflect model differences.

Member Function Documentation

getX()

uint8_t libsidplayfp::Lightpen::getX ( ) const

inline

Return the low byte of x coordinate.

getY()

uint8_t libsidplayfp::Lightpen::getY ( ) const

inline

Return the low byte of y coordinate.

reset()

void libsidplayfp::Lightpen::reset ( )

inline

Reset the lightpen.

retrigger()

bool libsidplayfp::Lightpen::retrigger ( )

inline

Retrigger lightpen on vertical blank.

Returns

true if an IRQ should be triggered

setScreenSize()

void libsidplayfp::Lightpen::setScreenSize ( unsigned int  height, unsigned int  width  )

inline

Set VIC screen size.

Parameters

height	number of raster lines
width	number of cycles per line

trigger()

bool libsidplayfp::Lightpen::trigger ( unsigned int  lineCycle, unsigned int  rasterY  )

inline

Trigger lightpen from CIA.

Parameters

lineCycle	current line cycle
rasterY	current y raster position

Returns

true if an IRQ should be triggered

untrigger()

void libsidplayfp::Lightpen::untrigger ( )

inline

Untrigger lightpen from CIA.

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

• lightpen.h