libsidplayfp::MMU Class Reference

#include <mmu.h>

Inheritance diagram for libsidplayfp::MMU:

Collaboration diagram for libsidplayfp::MMU:

Public Member Functions
	MMU (EventScheduler &eventScheduler, 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) override
uint_least16_t	readMemWord (uint_least16_t addr) override
void	writeMemByte (uint_least16_t addr, uint8_t value) override
void	writeMemWord (uint_least16_t addr, uint_least16_t value) override
void	fillRam (uint_least16_t start, uint8_t value, unsigned int size) override
void	fillRam (uint_least16_t start, const uint8_t *source, unsigned int size) override
void	installResetHook (uint_least16_t addr) override
void	installBasicTrap (uint_least16_t addr) override
void	setBasicSubtune (uint8_t tune) override
uint8_t	cpuRead (uint_least16_t addr) const
void	cpuWrite (uint_least16_t addr, uint8_t data)

Detailed Description

The C64 MMU chip.

Member Function Documentation

cpuRead()

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

inlineoverridevirtual

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 libsidplayfp::sidmemory.

fillRam() [2/2]

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

inlineoverridevirtual

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 libsidplayfp::sidmemory.

installBasicTrap()

void libsidplayfp::MMU::installBasicTrap ( uint_least16_t  addr )

inlineoverridevirtual

Set BASIC Warm Start address.

Parameters

addr	the new addres to point to

Implements libsidplayfp::sidmemory.

installResetHook()

void libsidplayfp::MMU::installResetHook ( uint_least16_t  addr )

inlineoverridevirtual

Change the RESET vector.

Parameters

addr	the new addres to point to

Implements libsidplayfp::sidmemory.

readMemByte()

uint8_t libsidplayfp::MMU::readMemByte ( uint_least16_t  addr )

inlineoverridevirtual

Read one byte from memory.

Parameters

addr	the memory location from which to read from

Implements libsidplayfp::sidmemory.

readMemWord()

uint_least16_t libsidplayfp::MMU::readMemWord ( uint_least16_t  addr )

inlineoverridevirtual

Read two contiguous bytes from memory.

Parameters

addr	the memory location from which to read from

Implements libsidplayfp::sidmemory.

setBasicSubtune()

void libsidplayfp::MMU::setBasicSubtune ( uint8_t  tune )

inlineoverridevirtual

Set the start tune.

Parameters

tune	the tune number

Implements libsidplayfp::sidmemory.

writeMemByte()

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

inlineoverridevirtual

Write one byte to memory.

Parameters

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

Implements libsidplayfp::sidmemory.

writeMemWord()

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

inlineoverridevirtual

Write two contiguous bytes to memory.

Parameters

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

Implements libsidplayfp::sidmemory.

---

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

• mmu.h
• mmu.cpp