MMU Class Reference

#include <mmu.h>

Inheritance diagram for MMU:

Collaboration diagram for MMU:

Public Member Functions
	MMU (EventContext *context, IOBank *ioBank)
void	reset ()
void	setRoms (const uint8_t *kernal, const uint8_t *basic, const uint8_t *character)
uint8_t	readMemByte (uint_least16_t addr)
uint_least16_t	readMemWord (uint_least16_t addr)
void	writeMemByte (uint_least16_t addr, uint8_t value)
void	writeMemWord (uint_least16_t addr, uint_least16_t value)
void	fillRam (uint_least16_t start, uint8_t value, unsigned int size)
void	fillRam (uint_least16_t start, const uint8_t *source, unsigned int size)
void	installResetHook (uint_least16_t addr)
void	installBasicTrap (uint_least16_t addr)
void	setBasicSubtune (uint8_t tune)
uint8_t	cpuRead (uint_least16_t addr) const
void	cpuWrite (uint_least16_t addr, uint8_t data)
virtual void	setCpuPort (int state)=0
virtual uint8_t	getLastReadByte () const =0
virtual event_clock_t	getPhi2Time () const =0
virtual uint8_t	readMemByte (uint_least16_t addr)=0
virtual uint_least16_t	readMemWord (uint_least16_t addr)=0
virtual void	writeMemByte (uint_least16_t addr, uint8_t value)=0
virtual void	writeMemWord (uint_least16_t addr, uint_least16_t value)=0
virtual void	fillRam (uint_least16_t start, uint8_t value, unsigned int size)=0
virtual void	fillRam (uint_least16_t start, const uint8_t *source, unsigned int size)=0
virtual void	installResetHook (uint_least16_t addr)=0
virtual void	installBasicTrap (uint_least16_t addr)=0
virtual void	setBasicSubtune (uint8_t tune)=0

Detailed Description

The C64 MMU chip.

Member Function Documentation

cpuRead()

uint8_t MMU::cpuRead ( uint_least16_t  addr ) const

inline

Access memory as seen by CPU.

Parameters

addr	the address where to read from

Returns

value at address

cpuWrite()

void MMU::cpuWrite ( uint_least16_t  addr, uint8_t  data  )

inline

Access memory as seen by CPU.

Parameters

addr	the address where to write
data	the value to write

fillRam() [1/2]

void MMU::fillRam ( uint_least16_t  start, const uint8_t *  source, unsigned int  size  )

inlinevirtual

Copy a buffer into a ram area.

Parameters

start	the start of memory location where to write
source	the source buffer
size	the number of bytes to copy

Implements sidmemory.

fillRam() [2/2]

void MMU::fillRam ( uint_least16_t  start, uint8_t  value, unsigned int  size  )

inlinevirtual

Fill ram area with a constant value.

Parameters

start	the start of memory location where to write
value	the value to write
size	the number of bytes to fill

Implements sidmemory.

installBasicTrap()

void MMU::installBasicTrap ( uint_least16_t  addr )

inlinevirtual

Set BASIC Warm Start address.

Parameters

addr	the new addres to point to

Implements sidmemory.

installResetHook()

void MMU::installResetHook ( uint_least16_t  addr )

inlinevirtual

Change the RESET vector.

Parameters

addr	the new addres to point to

Implements sidmemory.

readMemByte()

uint8_t MMU::readMemByte ( uint_least16_t  addr )

inlinevirtual

Read one byte from memory.

Parameters

addr	the memory location from which to read from

Implements sidmemory.

readMemWord()

uint_least16_t MMU::readMemWord ( uint_least16_t  addr )

inlinevirtual

Read two contiguous bytes from memory.

Parameters

addr	the memory location from which to read from

Implements sidmemory.

setBasicSubtune()

void MMU::setBasicSubtune ( uint8_t  tune )

inlinevirtual

Set the start tune.

Parameters

tune	the tune number

Implements sidmemory.

writeMemByte()

void MMU::writeMemByte ( uint_least16_t  addr, uint8_t  value  )

inlinevirtual

Write one byte to memory.

Parameters

addr	the memory location where to write
value	the value to write

Implements sidmemory.

writeMemWord()

void MMU::writeMemWord ( uint_least16_t  addr, uint_least16_t  value  )

inlinevirtual

Write two contiguous bytes to memory.

Parameters

addr	the memory location where to write
value	the value to write

Implements sidmemory.

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

• mmu.h
• mmu.cpp