libsidplayfp::MOS652X Class Reference

#include <mos652x.h>

Inheritance diagram for libsidplayfp::MOS652X:

Collaboration diagram for libsidplayfp::MOS652X:

Public Types
enum class	model_t { MOS6526 = 0 , MOS8521 , MOS6526W4485 }

Public Member Functions
void	setModel (model_t model)
virtual void	reset ()
void	setDayOfTimeRate (unsigned int clock)

Static Public Member Functions
static const char *	credits ()

Protected Member Functions
	MOS652X (EventScheduler &scheduler)
virtual void	interrupt (bool state)=0
virtual void	portA ()
virtual void	portB ()
uint8_t	adjustDataPort (uint8_t data)
uint8_t	read (uint_least8_t addr)
void	write (uint_least8_t addr, uint8_t data)

Protected Attributes
EventScheduler &	eventScheduler
	Event context.
uint8_t &	pra
	Ports.
uint8_t &	prb
uint8_t &	ddra
uint8_t &	ddrb
uint8_t	regs [0x10]
	These are all CIA registers.
TimerA	timerA
	Timers A and B.
TimerB	timerB
std::unique_ptr< InterruptSource >	interruptSource
	Interrupt Source.
Tod	tod
	TOD.
SerialPort	serialPort
	Serial Data Registers.
EventCallback< MOS652X >	bTickEvent
	Events.

Friends
class	InterruptSource
class	SerialPort
class	TimerA
class	TimerB
class	Tod

Detailed Description

This class is heavily based on the ciacore/ciatimer source code from VICE. The CIA state machine is lifted as-is. Big thanks to VICE project! The Serial Port emulation is based on Denise emu code.

Member Enumeration Documentation

model_t

enum class libsidplayfp::MOS652X::model_t

strong

Enumerator
MOS6526	Old CIA model, interrupts are delayed by 1 clock.
MOS8521	New CIA model.
MOS6526W4485	A batch of old CIA model with unique serial port behavior.

Constructor & Destructor Documentation

MOS652X()

libsidplayfp::MOS652X::MOS652X ( EventScheduler &  scheduler )

protected

Create a new CIA.

Parameters

context

the event context

Member Function Documentation

adjustDataPort()

uint8_t libsidplayfp::MOS652X::adjustDataPort ( uint8_t  data )

protected

Timers can appear on the port.

credits()

const char * libsidplayfp::MOS652X::credits ( )

static

Get the credits.

Returns

the credits

interrupt()

virtual void libsidplayfp::MOS652X::interrupt ( bool  state )

protectedpure virtual

Signal interrupt.

Parameters

state

interrupt state

Implemented in libsidplayfp::c64cia1, and libsidplayfp::c64cia2.

read()

uint8_t libsidplayfp::MOS652X::read ( uint_least8_t  addr )

protected

Read CIA register.

Parameters

addr	register address to read (lowest 4 bits)

reset()

void libsidplayfp::MOS652X::reset ( )

virtual

Reset CIA.

Reimplemented in libsidplayfp::c64cia1.

setDayOfTimeRate()

void libsidplayfp::MOS652X::setDayOfTimeRate ( unsigned int  clock )

inline

Set day-of-time event occurence of rate.

Parameters

clock

setModel()

void libsidplayfp::MOS652X::setModel

(

model_t

model

)

Select chip model.

Parameters

model

write()

void libsidplayfp::MOS652X::write ( uint_least8_t  addr, uint8_t  data  )

protected

Write CIA register.

Parameters

addr	register address to write (lowest 4 bits)
data	value to write

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

• mos652x.h
• mos652x.cpp